FOREST RESOURCES WANAGEMENT

Overview on Formulation and Implementation of Master Plans for Nature Reserves in China

TANG Xiaoping

2015, 0(6): 1-9. doi:10.13466/j.cnki.lyzygl.2015.06.001

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It has been more than 20 years since China started formulation and implementation of master plans for its nature reserves.This has played an extremely important role in strengthening the development and standardizing the management of the nature reserves.This paper reviews the formation process of the master plan system for China’s nature reserves,summerizes its basic features such as roles,tasks,key points,aproval,supervision and management and analyzes the requirements and key points of the contents of the master plans.Besides,this paper also introduces the fundamental principles and major methods adopted for devedoping such master plans and describes the development tendency of the master plans for the nature reserves.

Rediscussion on Methods for Producing Annual National Estimates of Forest Resources

ZENG Weisheng,PU Ying,YANG Xueyun

2015, 0(6): 10-15. doi:10.13466/j.cnki.lyzygl.2015.06.002

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To meet the needs of assessing the target completion of the National “Twelfth Five-Year” Program Outlines,two improved methods were presented in this study,based on the methods for producing annual national estimates of forest resources presented by the first author in 2013,which were “sequent-shifting” method and “comprehensive compromise” method.Then,by using the main data of national forest inventories (NFI)after the 5^thNFI,the different methods were compared and analyzed for the timeliness,stability,and certainty of the national estimates.The advantages and disadvantages of the methods need to be evaluated based on a comprehensive analysis of the annual results.Especially,in considering the timeliness of the national estimates,it is necessary to take into account the harmony between the annual data and the published periodic data.

Research on the Influential Factors of Forest Right Mortgage Practices Taking Qingyuan of Zhejiang province as an example

NING Xuefang,FANG Luming,TANG lihua,LIU Zhili,FAN Yarong

2015, 0(6): 16-21. doi:10.13466/j.cnki.lyzygl.2015.06.003

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Based on forest right mortgage related data of Qingyuan in Zhejiang province from 2010 to 2013 and combined with field investigation,this paper analyzed the loan quantity change in four years,the nature of the financial institution’s,the degree of financial institutions participation and data structure of the loan,the selection of different forms of mortgage loan,the farmers’ personal characteristics.The research showed that the mainly involved financial institution is given priority to the finance with policy support,the age of farmers participated in loan behavior is between 35 and 55 years old,the uses of the loans have a significant impact on forest farmers’ behavior for loans.Suggestions are made to further promote lending practices.

Study on Reform and Development of State-owned Forest Farms

2015, 0(6): 22-27. doi:10.13466/j.cnki.lyzygl.2015.06.004

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Taking the approval and implementation of the reform pilot of the state-owned forest farms as an opportunity,this paper analyzed the current situation of state-owned forest farms in China by the end of 2013 and the current status of the reform and development,forest resources conservation and cultivation,infrastructure construction,poverty alleviation and industrial development.The key issues of reform and development of state-owned forest farms after the introduction of the central No.6.Documents were also discussed.All of these will provide reference for the future work of the state-owned forest farms.

Discussion about Practice and Countermeasure of the State-owned Forest Farm Reform in Zhejiang Province

ZHANG Xujun,GAO Junfeng

2015, 0(6): 28-32. doi:10.13466/j.cnki.lyzygl.2015.06.005

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Zhejiang province is selected as one of the first batch of pilot provinces in terms of the state-owned forest farm reform and 89 forest farms of 7 cities are included in this reform.In the paper,work of state-owned forest farms in Zhejiang Province are to be discussed from 4 sections including process,experience,problem and countermeasure,in order to provide theoretical reference for state-owned forest farm reform in Zhejiang province.

Practice and Thinking on Organizational Management Modes of Afforestation in Kunming

XU Xuejie,MA Jun

2015, 0(6): 33-36. doi:10.13466/j.cnki.lyzygl.2015.06.006

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On the basis of the current mechanism and policies of forestry management in Kunming,the authors summarized the existing organization and management modes and its characteristics in afforestation work,and analyzed the main existing problems.Then,the authors put forward some constructive countermeasures and suggestions for afforestation work.

Progress of Forestry Table Formulation in Yunnan Province and Its Development Strategies

SONG Yongjun

2015, 0(6): 37-40. doi:10.13466/j.cnki.lyzygl.2015.06.007

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This paper reviewed the history of forestry table formulation in Yunnan Province and analyzed its current progress.On the basis of achievements obtained and questions remaining in the field of forestry table formulation.It gave some suggestions and countermeasures for its future development,including further formulation,supplements and revisions of forestry tables in Yunnan Province.

Discussion about Construction Ideas of the Maowusu Sulige National Desert Park in Inner Mongolia

DUAN Jing

2015, 0(6): 41-44. doi:10.13466/j.cnki.lyzygl.2015.06.008

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The desert shall be developed reasonably as a kind of special resources,which will improve the initiative of the whole society to participate in desertification combating.Based on the feasibility,layout,contents and other aspects,this paper discussed the construction ideas of the Maowusu Sulige National Desert Park in Inner Mongolia to provide reference and basis for the construction of the desert parks in China.

Development of Forest Fire Early Warning
and Monitoring Technique System in China

2015, 0(6): 45-48. doi:10.13466/j.cnki.lyzygl.2015.06.009

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The current status,problem and development trend of forest fire early warning and fire monitoring instruments and methods have been analyzed in this paper.At the same time,the design of forest fire early warning and monitoring system using satellite,aviation and ground techniques have also been prospected for Chinese ecological culture construction.

Analysis of the Impacts on the Timber Plantations and Countermeasures in China

ZHOU Jiemin,XIE Xianjian

2015, 0(6): 49-53. doi:10.13466/j.cnki.lyzygl.2015.06.010

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The timber plantations have played an important role in China’s forestry development.This paper has analyzed the major conditions influencing the timber plantations and put forward relevant countermeasures so as to provide some reference for making scientific layout and related policies.

Probe into Frame Design of Forest Police Culture System

CHEN Yong,LU Weiying,ZHANG Chi,AO Konghua

2015, 0(6): 54-58. doi:10.13466/j.cnki.lyzygl.2015.06.011

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The construction of forest public security culture is a task being strategic,systematic and protracted,which involves systematic connotation,sustained promotion and effective administration.It should be carried out with the guidance of “Three-level Theory”of public security culture and the criteria of six fundamental requirements of remarkable culture construction,aiming at an efficient interlink of three levels,namely,level of theory,level of cognitive and level of behavior.The connotation of forest public security culture system is centered on the following four sub-systemsconcept system,content system,carrier system and promotion system.It is of positive significance in improving the design of the top of the forest public security construction,giving impetus to a systematic,programmed and scientific construction of forest public security culture.

Analysis and Suggestions on Chinese Enterprises’ Overseas Investment in Forestry

LI Jing,JING Tao

2015, 0(6): 59-63. doi:10.13466/j.cnki.lyzygl.2015.06.012

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This paper analyzed the status quo of Chinese enterprises’ overseas investment in forestry and summarized some features of Chinese enterprises’ overseas investment in forestry,and main problems existing in the process of Chinese forestry enterprises’ investment and cooperation in foreign counties.In addition,the paper proposed suggestions from dimensions of policy,taxation,financing and services.

Characteristics of Spatio-temporal Variation of NDVI in Different Ecological Function Zones in North Xinjiang in Recent 30 Years

WANG Jiping,GUO Zhongjun,HUANG jihong,ZANG Runguo,LIU Xuan

2015, 0(6): 64-70. doi:10.13466/j.cnki.lyzygl.2015.06.013

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Spatial and temporal variations of NDVI can not only reflect the changing trend of the ecological environment,but also reveal the recovery situation and degeneration of regional vegetation.According to the data of time series,which were GIMMS NDVI from 1981 to 2003 and SPOT VGT NDVI from year 1998 to 2010,this paper analyzed the spatial and temporal variations of ecological function area and NDVI of different vegetation types of northern Xinjiang in recent 30 years,with the maximum synthesis method of NDVI and the trend analysis method.The results showed as follows(1)From the perspective of functional areas in Northern Xinjiang,the average value of NDVI grew slowly and changed with the periodic fluctuation during the period from 1981 to 2003,while as a turning period in 2002,the improvement of the whole vegetation enhanced continuously.(2)From the perspective of different ecological function districts,the vegetation of ecological function areas in Yili River Valley,the northern slope of Tianshan Mountains and the south of Altai Mountains were obviously improved during the period from 1981 to 2003,while the vegetation of desert ecological area and eastern region of the Junggar basin were degenerated mildly.The vegetation in most parts of northern Xinjiang restored significantly during the period from 1998 to 2010,and the vegetation improvement reached the extremely significant level in the Yili River Valley and the plain oasis area in the middle of the northern slope of Tianshan Mountains.(3)The improvement or degradation trends of vegetation in northern Xinjiang may be related to the implementation of ecological construction and the overall regional climate change during the same period.

Research on Dummy Variable in Aboveground Biomass Models for Spruce

YANG Ying,RAN Qixiang,CHEN Xinyun,OU Qiangxin

2015, 0(6): 71-76. doi:10.13466/j.cnki.lyzygl.2015.06.014

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Based on the biomass data of 150 spruce sampling trees,by using conventional regression methods and dummy variable modeling approach,one variable and two or three variables biomass models were established for the total aboveground biomass and the biomass of components for spruce in Heilongjiang and Jilin provinces.The results showed that the total aboveground biomass models had the highest prediction accuracy(96% or more)and the leaf biomass models had the lowest prediction accuracy which still reached more than 87%.The prediction of other models reached more than 91% and the total relative error was controlled within ±5%.The prediction accuracy and the determination coefficient of biomass models were improved with the increase of the explanatory variables.After the introduction of the dummy variable,the prediction accuracy and the determination coefficient was improved meanwhile the standard error and the total relative error was reduced for one variable and two or three variables biomass models.Dummy variable can improve the prediction effect of the model.

Research on the Multivariate Nonlinear Mixed Effect Model of Different Ground Diameters and Heights of Pinus massoniana Lamb in Nanjing

ZHANG Minxia,ZHAO Haoyan,ZHANG Jie

2015, 0(6): 77-82. doi:10.13466/j.cnki.lyzygl.2015.06.015

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Related mathematical models of ground diameters and heights were established with monadic nonlinear models and multivariate nonlinear mixed effect models based on the data of 1022 Pinusmassoniana Lamb trees from 56 20m×20m square plots.The correlation indexes of all monadic nonlinear models are less than 0.5,systematic errors are more than 5% and relative residual standard deviations are more than 10%.The correlation index,systematic errors and relative residual standard deviations were 0.6157,4.58% and 9.07%.The results suggest that the relation between ground diameters and heights of Pinus massoniana Lamb trees can be precisely fitted with multivariate nonlinear mixed effect models.

Study on Biomass Model of the Mature Cunninghamia lanceolata Forest

JIANG Peng,GUO Jintang,ZHANG Shaoxuan

2015, 0(6): 83-87. doi:10.13466/j.cnki.lyzygl.2015.06.016

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In this paper,the mature Cunninghamia lanceolata plantation of state-owned forest farms in Jiangle County of Fujian Province was taken as the research object and the basic data for each standard plot was obtained by establishing 16 standard plots.Biomass equation was simulated by Logistic equation and power function which are suitable for the biological characteristics.According to biomass average data and D,DH as independent variables,the Logistic equation and power function of different organs (trunk,root,leaf,branch)and whole-plant were simulated.Based on Residual Sum of Squares,Total Average Relative Error,Average Relative Error,Average Absolute Relative Error,Akaike Information Criterion and Bayesian Information Criterion,the best modle was selected from four modles.The best modle included 3 power function models (DH as independent variables),2 Logistic models (D as independent variables).The results show that1)The determination coefficient R² of the model was between 0.925 and 0.932.2)The proportion order of different organ biomass in whole forest biomass was tree > branches > roots > leaves.

Analysis of Forest Fire Risk Effects on the Optimal Rotation of Carbon Sequestration Forests

HUANG Zaisheng,CHEN Qin

2015, 0(6): 88-93. doi:10.13466/j.cnki.lyzygl.2015.06.017

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An optimal rotation evaluation model was built for the forest carbon sequestration forest which took account of the fire risk under infinite horizon,and the empirical analysis carried out for the Slash pine carbon sequestration forests in Rui’an city of Zhejiang Province.The result showed thatfirstly,when forest fire risk rate increased to 1.10% and 2.50%,the optimal rotation of Slash pine carbon sequestration forests was shorten from 17 years to 16 years and 15 years respectively,and since then,it no longer changed;secondly,when the carbon price was 55 yuan/t,its optimal rotation was shorten from 18 years to 17 years,but the influence of the carbon price was limited;thirdly,different forest fire risk rate and the carbon price could be combined into the optimal rotation frontier,which was a polygon area;fourthly,the relationship between forest fire risk rate and the changing rate of carbon sequestration forests net present value was a power function,namely with the rate of forest fire risk arising,the decreased degree of its net present value would become smaller;lastly,when forest fire risk rate declined from 0.10% to 0.04%,the maximum cost that carbon sequestration forest management would pay was 805.96 yuan/hm²,which accounted for 2.40% of the total net present value of carbon sequestration forest,when the carbon price was 55yuan/t.

Study on Ecological Impact on the Larus relictus for the Zooplankton Variation in the Salina Wetland in Inner Mongolia Desert

ZHANG Lifang,LIU Wenying,ZHANG Qiuliang

2015, 0(6): 94-97. doi:10.13466/j.cnki.lyzygl.2015.06.018

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In the world Larus relictus is an endangered species.It’s breeding ground is in the salina wetland in Inner Mongolia.The choice of breeding ground is closely related to the foraging behavior.We have studied Larus relictus in the salina wetland for many years since 2005.Results showed that the Caenagrion imagoes and larvae are the main food of Larus relictus in the breeding season in Inner Mongolia desert salina wetland.Chironomidae larvae is an important food supplement for Larus relictus.Because of the local ecological environment deterioration,the water pH value 9.59 will reach the limit of Caenagrion survival 9.62.If Caenagrion disappears,Larus relictus will lose its main food in breeding ground.

Research on Distribution of Endangered Birds in Gaogesitai Hanwula National Nature Reserve

ZHAO Gerelt,SU Rina,CUI Guofa

2015, 0(6): 98-103. doi:10.13466/j.cnki.lyzygl.2015.06.019

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The species,population and distribution of endangered birds were studied by using line transect method in Gaogesitai Hanwula Nature Reserve from July 2012 to January 2015.The result showed that a total of 33 endangered bird species were observed and recorded and 3 species belong to Class I Nationally protected species,namely Ciconia nigra,Aquila chrysaetosand Otis tarda,22 of them belong to Class II Nationally protected species,13 of them were included in “China Red Data Book of Endandered Animals” and 8 species were included in “IUCN Red Data Book of Endangered Animals”,14 of the total are travelers,11 are summer residents and 8 are residents,23 species are distributed in wetland,13 in grassland and 12 in forest.

Research on Forest Landscape Characteristics in Guaimogou Valley

LI Huili,ZHOU Changliang

2015, 0(6): 104-110. doi:10.13466/j.cnki.lyzygl.2015.06.020

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Based on the forest map,remote sensing image and the date of forest resource survey in Bayingzhuang forest farm,Mulan Forestry Administration,processing and analysis of date were accomplished by using ArcGIS10.0,combined with principle and method of landscape ecology.According to the first-level landscape classification,Guaimogou valley was divided into 8 patches.The total area of Guaimogou was 342.76 hm²,the proportion that forest land accounted for of the total area was the largest.The largest patch shape index and fractal dimension was not into the forest,the smallest was nude beach.The largest porosity index was forest land,the smallest was not into the forest and nude beach. The largest fragmentation was nude beach and the smallest was forest land.The landscape diversity index was 0.57,and the largest diversity index was 0.92.They have a lot of difference.The evenness index was 0.62 that means the first-level landscape is imbalance.According to the second-level landscape classification,Guaimogou valley was divided into 19 patches.For the forest land,the proportion that larch forest accounted for of the total area was the largest.The largest patch shape index and fractal dimension was birch forest,the smallest was poplar forest.The largest porosity index was larch forest,the smallest was poplar forest .The largest fragmentation was almond forest and the smallest was birch forest.The landscape diversity index was 0.79,the largest diversity index was 0.89,and they are similar.The evenness index was 0.89 close to 1,so the second-level landscape is balancing.

Study on Changes in Forest Biomass Carbon Storage Based on Forest Inventory Data in Guangxi

HAN Mingchen,LIANG Yulian

2015, 0(6): 111-116. doi:10.13466/j.cnki.lyzygl.2015.06.021

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The dynamic change of carbon storage,carbon density and the value of carbon fixation and oxygen release by forest ecosystem were studied in Guangxi Zhuang Autonomous Region in order to provide the reference basis for the forest scientific management based on forest inventory data.The carbon storage and carbon density of forest in Guangxi Zhuang Autonomous Region were assessed by the regression between forest volume and stand biomass of different forest types.The total productivity and the carbon fixation and oxygen release value were estimated by the regression between stand biomass and net production of each forest type.The total forest carbon storage of Guangxi had a rising trend overall in recent 10 years.The total forest carbon increased to 33 715 million tons from 19 718 million tons from 2 000 to 2 010,the annual average growth was 7.1%.Three annual average carbon densities were 26.38,34.92 and 37.29 tons per hectare in 2000,2005 and 2010.An increase trend was showed from 2000 to 2010.The broad-leaved forest had a larger contribution to total forest carbon storage among different forest types,accounted for 68.66%,68.19% and 67.82% of the annual total carbon storage in 2000,2005 and 2010.The proportion of natural forest carbon storage was decreasing while the plantations carbon storage increased with annual average growth of 12.0% during this period.Both the total forest productivity and the carbon fixation and oxygen release value were increased in Guangxi,the total productivity was 6 887,7 554 and 8 190 million tons in 2000,2005 and 2010.The total value of carbon fixation and oxygen release were 133.148,146.049,and 158.344 billion Yuan respectively.

The Relationship between Urban Heat Island and Land Use Type and Its Unit Greening Rate

FEI Xianyun,CHEN Haiyan,GU Jingjing,WANG Ting

2015, 0(6): 117-122. doi:10.13466/j.cnki.lyzygl.2015.06.022

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With Dezhou City of Shandong Province as the study area,the urban land surface temperature (LST)was retrieved from Landsat image and land use information and unit greening rate of main land use types were drawn from Quickbird image.The relationship between UHI and land use types and unit greening rate was studied.The results showed that1)Land use types and their spatial structure affect the UHI and its spatial location;2)There was obviously negative linear correlation between the LST and greening rate of residential land and road site,and the stability was very high.There was negative correlation between LST and greening rate of industrial land,but the stability was poor.The study result was meaningful for the urban planning and urban green space construction.

The Initial Report about Growth of Taiwaia flousiana under Different Canopy Densities of Chinese Fir

LUO Qingfeng

2015, 0(6): 123-125. doi:10.13466/j.cnki.lyzygl.2015.06.023

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This paper,through the analysis of the results of growth of Taiwaia flousiana in different canopy densities of Chinese fir and the harmonious relationship between species,shows that Taiwaia flousiana grows well under the Chinese fir canopy and Chinese fir reserved closure is controlled at between 0.4 ~ 0.6.The preservation rate of Taiwania flousiana,diameter at breast height,tree height growth and the diameters at breast height (DBH)of Chinese fir grow best.

The Effect of Pine Moth on Surface Dead Fuel in Pinus massoniana Forest

ZHAN Qingbin, ZHANG Siyu

2015, 0(6): 126-129. doi:10.13466/j.cnki.lyzygl.2015.06.024

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The surface dead fuels of different time-lag were investigated in pest occurrence area and healthy area of Pinus massoniana forest.Moisture content was tested in the lab.The different time-lag of fuel loadswere analyzed.Pine moth increased the loads of surface dead fuel in Pinus massoniana forest.1h dead fuel and 10h dead fuel were increased by 174.7% and 113.5%,respectively.There is significant difference between pest occurrence area and healthy area of Pinus massoniana(p<0.05).The fuel load tends to balance after stand recovery period.1h dead fuel load and 10h dead fuel were increased by 41.6% and 16.7%.And there is no significant difference between pest occurrence area and healthy area of Pinus massoniana(p>0.05) forest.Therefore,insect outbreak can affect fire risk based on the surface dead fuel.

Soil Chemical Properties of Salix Shurbs of Different Ages in Horqin Sandy Land

BAO Hasengaowa,ZHANG Wen,EN He,MANG Lai,LIU Desen

2015, 0(6): 130-136. doi:10.13466/j.cnki.lyzygl.2015.06.025

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Determination of 9 soil index in the soil layer(0～60cm)of Salix planted in 2000,2004 and 2007 was done in southwestern Horqin sandy land.The results showed that total P and K in each soil layer of the 3 Salix shrubs of 10 years old>7 years old>14 years old,the pH 7 years>10 years>14 years.7 years>10 years>14 years in soil layer(0～60cm)of the 3 Salix total N.available K,soil organic matter and pH.Total P,K available P and H₂O is 10 years>7 years>14 years.Available N is 7 years>14 years> 10 years.Correlation analysis showed that there was a positive correlation between soil organic matter and total N that was 0.87.

The Engineering Application of Object-based Forest Change Detection Using High-Resolution Remote Sensing Image

LI Chungan,LIANG Wenhai

2015, 0(6): 137-143. doi:10.13466/j.cnki.lyzygl.2015.06.026

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After years of extensive testing and practical applications of forest change detection of satellite image,we present in this paper anengineering procedure and method system for forest change detection based on object-oriented analysis of high-resolution remote sensing images,which included image preprocessing,sub-compartment thematic map preparation,image segmentation and information extraction,object-oriented classification,classification output modification,change objects extraction and field work map production.The methods had no complex image calculation,were easy to learn,could easily streamline the operation,and non professional person could complete one operation after the short-term training.Dealing with one time image and thematic map and time images,the paper introduced the application of this procedure and method system.

Forest Right Investigation System and Research of Fast Implementing Technology

HE TAO,SUN Yujun,HU Changru,LI Zhongzhe

2015, 0(6): 144-148. doi:10.13466/j.cnki.lyzygl.2015.06.027

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In order to achieve forest right survey system with cross-platform and cross-browser,jQueryMobile development framework is adopted in this paper,and Javascript API (Application Programming Interface,API)of Baidu map is used for secondary development.This system can fill in forest right attribute data online,it also can realize these functions,such as point coordinates collection of forest right field boundary,drawing of forest map and automatic calculation of forest right area.Therefore,the system reduce workforce of field survey and solve the problem related to indoor and field work of land right.

Design and Implementation of Daxiagu National Nature Reserve Management Information System

ZONG Xue,ZHAI Hongbo,WANG Hongwei,ZHENG Yaomin

2015, 0(6): 149-154. doi:10.13466/j.cnki.lyzygl.2015.06.028

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According to actual situation and business needs of Heilongjiang Daxiagu National Nature Reserve,the frame structure and function system of integrated management geographic information system (IMGIS)was designed from on the angle of information management.IMGIS focuses on the urgent needs of fuction on data management,rare species conservation,fire protection and prevention of the reserve.Key technologies such as function modularization management,data warehouse integration,unified identity authentication,data encryption security have been applied to complete the function realization of IMGIS.

Material Flow Analysis and Its Application in the Field of Forestry

KONG Linlin,LIN Wenshu,WU Jinzhuo

2015, 0(6): 155-159. doi:10.13466/j.cnki.lyzygl.2015.06.029

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Based on the research about material flow at home and abroad,this paper clarified the definition of material flow analysis,and reviewed the main material flow analysis methods.The application of material flow analysis in different forest types and forest products were summarized,and some recommendations for promoting the application of material flow analysis in the field of forestry were put forward.

Investigation and Analysis of Germplasm Resources of Hainan Qiongbei Cerbera Manghas

LU Yanpan,Lü Bing,ZHAO Wei,AN Chunjing,CHEN Cuijuan,HAO Qingyu

2015, 0(6): 160-164. doi:10.13466/j.cnki.lyzygl.2015.06.030

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Based on Google satellite map,the combined methods of transect walks and typical sample survey were used of make the germplasm resources investigation of the natural Cerbera Manghas population distributed in the coastal zone of 5 cities and counties of Haikou,Wenchang,Qionghai,Chengmai and Lingao in the Qiongbei region of Hainan Island.The results showed that small patches of Cerbera Manghas populatin were found only in Haikou and Wenchang out of 5 cities and counties,but the distribution areas were very limited.The fragmentation was serious,so the average distribution density of Cerbera Manghas(root diameter≥2.5cm)was just 95.59 trees/hm².Because of the interference and destruction of reclaimed farmlands and building artificial windbreaks,the limited population of Cerbera Manghas only remained in the edge of casuarina equisetifolia plantation,the edge of farm field and field bunds or in secondary forest.The age structure of Cerbera Manghas population in Haikou belongs to young aged forest,but the one in wenchang belongs to mature forest,the seed yield of Cerbera Manghas population in Wenchang was significantly greater than that in Haikou,with 58 seeds/tree and 6 seeds/tree,respectively.The natural regeneration ability of Cerbera Manghas was stronger,and the average densities of saplings and seedlings were 2 600 trees/hm².

Application of ArcPad in the Forest Land Law Enforcement

GUO Weizhi

2015, 0(6): 165-167. doi:10.13466/j.cnki.lyzygl.2015.06.031

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This paper introduces the method for making the ArcPad software in the GPS-supporting PDA device.Taking the forest land law enforcement as an example and combined with the forestry spatial database,the method can provide technical reference for the forest land law enforcement by using ArcPad software to quickly judge the illegal action of the forest land destruction.

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