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    Key Data Results and Trend Analysis of the Sixth National Survey on Desertification and Sandification
    ZAN Guosheng, WANG Cuiping, LI Feng, LIU Zheng, SUN Tao
    FOREST RESOURCES WANAGEMENT    2023, 0 (1): 1-7.   DOI: 10.13466/j.cnki.lyzygl.2023.01.001
    Abstract2015)   HTML183)    PDF (1091KB)(910)       Save

    The Sixth National Survey on Desertification and Sandification was based on the results of the Third National Land Survey,using 2019 as the benchmark year.The results showed a comprehensive status of desertification and sandification in China.This paper presented a brief overview of this survey,the status and dynamic changes of desertification and sandification in China,conducted a comprehensive analysis of the current situation,and proposed some suggestions for combating desertification and sandification.The survey results showed that,until 2019,the desertification land area in China was 257.371 3 million hm2 and the sandification land area was 168.782 3 million hm2.Compared with 2014,the desertification area of China decreased by 3.788 0 million hm2 with an average annual decrease of 757.6 thousand hm2.The sandification area of China decreased by 3.335 2 million hm2 with an average annual net reduction of 667 thousand hm2.

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    Research on the Construction of Comprehensive Evaluation Index System of Natural Resources
    ZUO Song, HU Li, YANG Lina
    FOREST RESOURCES WANAGEMENT    2022, 0 (3): 12-18.   DOI: 10.13466/j.cnki.lyzygl.2022.03.002
    Abstract1015)   HTML33)    PDF (999KB)(268)       Save

    By collecting and sorting out relevant indicator systems and methods in the field of comprehensive evaluation of natural resources in China,some existing problems in the current evaluation system were summarized.On the basis of analyzing the key issues of natural resources management,combining with the relevant norms and standards published by the natural resources,forest and grassland,water conservancy,ecological environment and other departments,the comprehensive evaluation indicator system of natural resources with 12 second-level indicators and 41 third-level indicators was constructed from five dimensions of natural resources: background status of natural resources,efficient use of natural resources,green protection of natural resources,quality life of natural resources and governance status of natural resources,which will be expected to act as a reference for making a developed top-level design of natural resource evaluation,and constructing regional classification,multi-dimensional and multi-indicator of comprehensive evaluation indicator system.

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    Study on the Current Situation and Modernization of State-Owned Forest Farms in Guizhou Province
    WEN Yu
    FOREST RESOURCES WANAGEMENT    2022, 0 (3): 36-41.   DOI: 10.13466/j.cnki.lyzygl.2022.03.006
    Abstract948)   HTML197)    PDF (995KB)(476)       Save

    This paper expounded the present situation and modernization construction mode of state-owned forest farms in Guizhou Province,analyzed the problems and shortcomings faced by the development of state-owned forest farms,and put forward the ways and measures to solve these problems,in order to provide reference for promoting the modernization construction of state-owned forest farms in Guizhou Province and realizing high-quality sustainable development.

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    Construction and Practices of Forest Land Gradation and Classification—A Case Study of Forest Land in Hainan Province
    SHI Tian, WU Jianwei, LI Xiaoxia, WU Bangao, ZHANG Hongwei
    FOREST RESOURCES WANAGEMENT    2022, 0 (6): 19-25.   DOI: 10.13466/j.cnki.lyzygl.2022.06.004
    Abstract838)   HTML29)    PDF (1165KB)(133)       Save

    This paper took the forest land resources in Hainan Province as an example to carry out the practical research work based on the General Rules for Gradation and Classification of Natural Resources for the first time.This paper had created a classification index interpretation model that could not directly obtain data,which constructed an evaluation scheme for the classification of forest land in Hainan Province by the method of factor and correction,and clearly adopted the five grade and five class evaluation system.The results indicated that 18.2474 million hm2 of forest land was the phased achievement of the "The Third Land Survey" project in Hainan Province and there were 2.1252 million basic units for forest land classification and grading,with one grade of each plot.There were actually four grades from 1 to 4;The commercial forest land was 7.8809 million hm2,and there were actually five grades from 1-5;The forest land of public welfare forest was 10.3665 million hm2,and there were actually 1-5 levels.The evaluation results reflected the actual situation of forest land in Hainan,and provided a reference for the standardization and procedure of national forest land classification with the promotion of forest land resources protection and rational development and utilization.

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    Countermeasures and Suggestions for High-Quality Development of State-Owned Forest Farms
    ZHAO Rong, LI He
    FOREST RESOURCES WANAGEMENT    2022, 0 (zk1): 46-51.   DOI: 10.13466/j.cnki.lyzygl.2022.S0.007
    Abstract690)   HTML9)    PDF (949KB)(32)       Save

    Based on data from the monitoring and the field survey on the reform of state-owned forest farms,this paper evaluated effectiveness of the reform and found that state-owned forest farms still faced such problems as infrastructure construction,forest preservation and protection,forest management,industrial development,personnel management,and policy design.Therefore,this paper recommended several strategies as follows:improving the protection and cultivation system of forest resources in state-owned forestry farms and strengthening supervision over forest resources;vigorously developing ecological industries and increasing the supply of green and high-quality forest products;strengthening capacity building and improving incentive mechanism;expanding financial and monetary support channels for the continuing development of state-owned forest farms and capital investment;optimizing the design of financial support policy and improving the efficiency of financial funds.It is aimed that these strategies are useful for promoting the high-quality development of state-owned forest farms.

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    Estimation of Forest Parameters of Guangxi Eucalyptus Plantation Based on Terrestrial Laser Scanning
    XIE Xiansheng, SU Hongxin, YANG Yuanzheng, LI Chunhai, LU Feng, LUO Weisheng, XU Zhanyong
    FOREST RESOURCES WANAGEMENT    2022, 0 (2): 100-108.   DOI: 10.13466/j.cnki.lyzygl.2022.02.014
    Abstract655)   HTML11)    PDF (3843KB)(252)       Save

    Using ground real data as a control,this study applied terrestrial laser scanning (TLS) to scan eucalyptus plantations at different stand ages(2,5,10 a)in Guangxi State-owned Gaofeng Forest Farm,assessed the ability of TLS in individual tree identification and extraction of tree parameters and further explored its feasibility for extracting forest parameters. The results showed that:1) TLS had a strong ability to identify individual tree in eucalyptus plantations,with an overall recognition rate of 93.45%. Its extracted tree parameters of various types were significantly different among different stand ages (P<0.05),which was consistent with the measured trend. 2) In the 2a eucalyptus plantation,there was no difference between the measured values and the estimated values of DBH,basal area,tree volume by TLS. At the same time,it was found that the method of reconstructing tree models based on TLS combined with AdQSM was feasible,and it had a very significant linear correlation with the results calculated by the standing tree volume model (P<0.01,R2=0.96,MAE=0.05 m3). 3) At the stand level,the estimation accuracy of TLS were 94.69%,93.75%,89.66%,and 84.22% for the average diameter at breast height,average tree height,stand basal area,and standing volume,respectively,with superior estimation ability. The study showed that the application of TLS can rapidly estimate the forest parameters of eucalyptus plantations at the sample plot scale.

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    Study on Phenotype and Adaptability Evaluation of Cold-Tolerant Fern in Beijing
    HE Guoxin
    FOREST RESOURCES WANAGEMENT    2022, 0 (2): 82-90.   DOI: 10.13466/j.cnki.lyzygl.2022.02.012
    Abstract654)   HTML4)    PDF (5738KB)(323)       Save

    The main problems existing in Beijing plain area are as follows:the landscape of uniform tree species is lack of vertical layer especially in ground cover plants,let alone pay attention to species diversity and density,as well as seasonal colors.There are few ground cover species in high canopy forests,and the phenomenon of understory blank is prominent.To enrich the diversity of ground cover plants under forests,10 cold resistant fern varieties were introduced to carry out adaptability research tests such as cold tolerance,negative tolerance and cold tolerance. Four varieties of fern,including Mexicans fern,Banas fern,Japanese color leaf fern and Ostrich fern,suitable for understory planting in Beijing Plain were selected.The evaluation indexes and methods of the adaptability of the introduction and cultivation of cold resistant fern were summarized. The screening and evaluation experiment of cold resistant fern enrich the species of ground cover plants,and provide more choices for high-quality landscape construction of the capital.

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    Problems and Recommendations of Conservation and Restoration of Natural Forest in Yangtze River Economic Belt
    HE Yating, XIE Hesheng, HE Youjun
    FOREST RESOURCES WANAGEMENT    2022, 0 (2): 1-9.   DOI: 10.13466/j.cnki.lyzygl.2022.02.001
    Abstract578)   HTML23)    PDF (1511KB)(319)       Save

    Natural forest is one of the most important ecological elements in Yangtze River Economic Belt,and the conservation and restoration of the natural forest has important significance for constructing the ecological security shelter in the Yangtze River Economic Belt. Based on the data of the 9th National Continuous Forest Inventory(2014—2018),this paper analyzed the current situation,the existing problems and proposed the targeted recommendations in the Yangtze River Economic Belt. The results showed that the forest coverage rate was 44.38%,14 percentage higher than that in the early stage of the natural forest project,while the area of natural forests and the stock increased by 14.18 million hectares and 1 368 million cubic meters,respectively. However,there were still problems such as lack of overall planning,high pressure on natural forest protection,the low quality of natural forest resources and weak management and protection ability,incomplete subsidy policy,failure to establish a long-term fund guarantee mechanism. It is suggested that long-term mechanisms such as top-level design,resource management and conservation,fund investment,and ecological compensation should be established,so as to lay a solid ecological foundation for high-quality development of the Yangtze River Economic Belt.

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    Research on the Plot Survey and Load Estimation of National Forest Fuels
    YANG Xueqing, SUN Zhichao, CHAI Zheng, QIU Yiwen, JIANG Chunying
    FOREST RESOURCES WANAGEMENT    2022, 0 (6): 1-6.   DOI: 10.13466/j.cnki.lyzygl.2022.06.001
    Abstract552)   HTML74)    PDF (934KB)(184)       Save

    From the viewpoint of tediousness and professionalism of forest fuel load investigation,a stratified sampling system for the plot survey of forest fuel loads at national and provincial scale were developed based on five commonly used indicators,namely vegetation area,tree species,stand origin,age group and canopy density.Within each specific plot,the fuel loads of tree-layer can be estimated by using the data of individual tree survey combined with the algometric biomass model or the biomass expansion factor,while fuel loads of shrub-,herb-,litter- and humus-layer should be jointly estimated by the quadrat survey and the data of sample moisture content.This method has important guidance and reference significance for the survey and estimation of forest fuel loads at national or regional scale.

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    Design and Application of Forest and Grassland Intelligent Patrol Management System
    WANG Shuai, ZHENG Hong, LU Nan, LI Hui, PENG Jiangui, DONG Yawen
    FOREST RESOURCES WANAGEMENT    2022, 0 (6): 145-150.   DOI: 10.13466/j.cnki.lyzygl.2022.06.022
    Abstract538)   HTML23)    PDF (1640KB)(95)       Save

    Aiming at the challenges existing in the process of intelligent development of forest and grassland patrol management system,on the basis of the existing patrol management system,a simple,practical,effective and optimized forest and grassland intelligent patrol management system was designed by applying the technical means of forest and grassland grid management,patrol task management,spatio-temporal data analysis and system sharing service.The system is helpful to improve the efficiency of patrols,reduce the burden of grassroots,standardize patrol work,mobilize the participation of member units,and realize grid-based,real-time,and intelligent decision-making management,in order to accelerate the construction of ecological civilization,promote the high-quality development of forest and grassland undertakings.

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    Application Prospect of BD-3Navigation Satellite System in Forestry and Grassland
    LIN Zepan, WU Honggan
    FOREST RESOURCES WANAGEMENT    2022, 0 (2): 27-31.   DOI: 10.13466/j.cnki.lyzygl.2022.02.004
    Abstract531)   HTML17)    PDF (1003KB)(110)       Save

    Based on technological requirements of gridded and refined resource management in forestry and grassland,this paper systematically analyzed the diversity characteristics of spatio-temporal data in management of forest,grassland,wetland and desertification,comprehensively introduced the advantages of China's BD-3 GNSS,and explained the current situation and problems of Beidou applications in forestry and grassland. The significance and prospect of large-scale application of BD-3 system in forestry and grassland were explained.

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    Carbon Storage Status and Carbon Sequestration Potential Prediction of Arbor Forest in Hebei Province
    ZHOU Zhifeng, WANG Yao, JIA Gang, YU Shiyong, GU Chenglong
    FOREST RESOURCES WANAGEMENT    2022, 0 (2): 45-53.   DOI: 10.13466/j.cnki.lyzygl.2022.02.007
    Abstract528)   HTML15)    PDF (1016KB)(139)       Save

    Based on the data of the eighth and ninth national forest resource inventory,the biomass and carbon storage estimation methods guided by the Intergovernmental Panel on Climate Change(IPCC) were used to estimate the carbon storage of arbor forests in Hebei Province,and the carbon density and carbon sequestration rate were analyzed. Based on the data of "Hebei Land Greening Plan(2018—2035)",the carbon sequestration potential was predicted by model method. The results showed that the carbon storage of arbor forest in Hebei Province in 2018 was 61.6749 million tC,the average carbon density was 16.88 tC/hm2,the average carbon sequestration rate was 0.31 tC/(hm2·a),and the carbon sequestration potential of the new forest was 0.7363 million tC by 2035. The research results contribute to estimate the progress of carbon neutralization and evaluate the implementation capacity of Hebei Province. Through the analysis of this paper,it is expected to enrich the research results of forest carbon sinks in China,and provide scientific basis for the macro management of carbon sinks.

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    Dynamic Change and Influencing Factors of Vegetation Cover over the Past 30 years in the Wutai Mountain Area
    REN Tianchen, CHEN Junfeng, LIU Nan
    FOREST RESOURCES WANAGEMENT    2022, 0 (4): 89-99.   DOI: 10.13466/j.cnki.lyzygl.2022.04.012
    Abstract480)   HTML11)    PDF (8599KB)(553)       Save

    Based on 25 Landsat remote sensing data sources from 1991 to 2020,the temporal and spatial characteristics of vegetation coverage and its influencing factors in Wutai Mountain were analyzed by binary pixel model,wavelet analysis and partial correlation analysis.The results showed that the FVC values in Wutai Mountain area showed an increasing trend on the whole,in which the mean value of FVC in Wutai County was the highest,and the FVC growth rate in Yuanping City was the highest.There were three main change cycles of 9,12,21 years to control the change of FVC in the whole time domain.The vegetation cover in the study area showed a spatial distribution pattern of "low in the west and high in the east",and the improved area of vegetation cover was much larger than the degraded area.The CV values of Wutai County showed a large negative deviation phenomenon when the altitude was lower than 2 400m,and a large positive deviation phenomenon when the altitude was higher than 2 400m.The FVC values of Fanshi County showed an order as follows:shade slope>sunny slope>half shade slope>half sunny slope;The peak values of FVC in each slope direction of Dai County and Yuanping City appeared in the altitude range of 1 600~2 000m.The negative deviation of CV values in Wutai County,Dai County and Yuanping City increased with the increase of slope.From 1980 to 2015,the mean value of partial correlation coefficient between FVC value and temperature was 0.14,and that between FVC value and precipitation was 0.05.In Wutai Mountain area,the area of forest land and construction land increased,while the area of cultivated land and grassland decreased to varying degrees from 1980 to 2015,and there were vegetation decline problems in human-active areas such as mining areas and scenic spots.

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    Forest Resources Status and Management Strategy in Beijing Plain Area
    WEI Yankui
    FOREST RESOURCES WANAGEMENT    2022, 0 (2): 10-18.   DOI: 10.13466/j.cnki.lyzygl.2022.02.002
    Abstract470)   HTML9)    PDF (1069KB)(479)       Save

    The plain area of Beijing is the main carrying area of the core capital functions and the urban functions. The forest in the plain area plays an important role for the health of residents and the development of various undertakings in the capital. The development of forest resources in Beijing plain area experienced recovery period,wandering period,steady development period and rapid development period. The present situation of plain forest resources was analyzed from the aspects of forest area,stock,forest species,age group and tree species composition. The change trend of plain forest area,stock,forest coverage rate and tree species composition from 2009 to 2019 was analyzed. It was concluded that the ecological pattern of the plain was basically formed,the resource structure of "more forest belts,less forest patches" was changed,the uniformity of ecological spatial distribution was improved,and the richness of forest landscape was increased.The situation and requirements of forest management in plain area in the new era were analyzed from three aspects:requirements of new urban general regulations,citizens' demand for beautiful environment and high-quality development of landscape in the new era.Through analysis and discussion,countermeasures and suggestions were put forward for forest management in Beijing plain area.

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    Discussion on the Compilation of a New Round of Provincial Forest Land Protection and Utilization Planning—A Case Study of Guizhou Province
    GAN Guichun, WANG Shaojie, XI Qin, XU Dengping
    FOREST RESOURCES WANAGEMENT    2022, 0 (6): 14-18.   DOI: 10.13466/j.cnki.lyzygl.2022.06.003
    Abstract469)   HTML35)    PDF (907KB)(180)       Save

    The characteristics of forest land protection and utilization planning were summarized.Based on the new round of forest protection planning in Guizhou Province,this paper analyzed the issues such as the connection of forest land definition standards,the fusion of basic data sources,and the positioning of the planning development blueprint under the land space planning system.In order to link up and coordinate the land space planning,a new round of mechanisms and strategies such as the classification and coordination of provincial forest land protection and utilization planning,the scientific integration of linkage verification,and the conduction and guidance of spatial layout were proposed.

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    FOREST RESOURCES WANAGEMENT   
    Accepted: 10 December 2022

    Survey and Analysis of Taiga Forest Plant Diversity Features in Daxing'anling Mts.
    SUN Yucheng, ZHANG Xiting, JI Qianru, ZHANG Jianyu, WANG Wenjie
    FOREST RESOURCES WANAGEMENT    2022, 0 (6): 124-130.   DOI: 10.13466/j.cnki.lyzygl.2022.06.019
    Abstract456)   HTML22)    PDF (1010KB)(91)       Save

    Daxing'anling Mts.are the most important cold-temperate taiga forests in China.By taking Huzhong National Reserve,as the study objective,we investigated trees,shrubs and herbs by the field plot method,and calculated plant diversity indices,then performed redundancy ordination of their association and found that,Larix gmelinii was the main tree species in the arbor layer,with a relative abundance of 80.39%,followed by Betula platyphylla. The proportion of lingonberry (Vaccinium Vitis-Idaea) was the highest among shrubs,reaching 87.85%.A total of 51 species of herbs layer were found,of which Deyeuxia angustifolia accounted for the largest proportion,reaching 37.85%.Larix gmelinii was the main tree species in the regeneration layer with the relative abundance of 77.94%,and the rest was Betula platyphylla.Redundancy ordination and variance partitioning analysis showed that the independent effect of community structure and shrub layer characteristics contributed the most to the diversity change,and shrub coverage,ground diameter of regeneration layer and shrub density had the closest relationship with plant diversity change,and the protection of plant diversity can be achieved by adjusting the above factors with fully accounting of the impact of other community structure characteristics of arbor,shrub and herbs on species diversity.

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    Realization Path of High-Quality Development of National Parks
    TANG Xiaoping
    FOREST RESOURCES WANAGEMENT    2022, 0 (3): 1-11.   DOI: 10.13466/j.cnki.lyzygl.2022.03.001
    Abstract455)   HTML26)    PDF (1577KB)(287)       Save

    China officially established the first batch of five national parks in 2021,entering a new stage of national park development.By combing the development tasks of five national parks approved by the state,this paper made it clear that the development focus of national park was to build a clear and standardized asset property right system,a unified and efficient ecological governance system,a strong public service system,and an overall and moderate community coordination mechanism.This paper focused on the realization path of high-quality development of national parks from nine aspects: planning and implementation,demarcation and marking,institutional setting,asset supervision,infrastructure,monitoring and perception,public service and community coordination.The state and governments at all levels should provide basic guarantee from the aspects of brand building,institutional system,scientific and technological support and capital investment,so as to provide reference for the development and management of national parks.

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    Application Evaluation of BJ3 Satellite Data in Remote Sensing Monitoring of Pine Wilt Disease
    QIN Lin, MENG Xianjin, ZHANG Shuihua, XUE Yadong, LIU Xinke, Xing Peng
    FOREST RESOURCES WANAGEMENT    2022, 0 (4): 126-133.   DOI: 10.13466/j.cnki.lyzygl.2022.04.016
    Abstract455)   HTML12)    PDF (12623KB)(73)       Save

    BJ3N is an international leading high-resolution optical remote sensing satellite with independent intellectual property rights of China.The first two satellites were successfully launched in 2021.In order to better understand the application performance of BJ3N,this paper used the relevant image data of BJ3N in Shaoguan City,Guangdong Province to carry out remote sensing monitoring of pine wilt disease,and the application evaluation in image fusion,index calculation,information extraction and other aspects.The results showed that BJ3N data could greatly improve the difference between healthy pines and discolored pines through PANSHARP fusion method and NGRDI index calculation,and effectively enhance the identification effect of discolored pine;the precision rate of intelligently extracting discolored pine through deep learning was 95.8%.,and the recall rate was 88.3%,which met the work needs of remote sensing monitoring of pine wilt disease,and was conducive to the accurate monitoring and prevention of pine wilt disease.

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    Study on Remote Sensing Extractions of Burned Areas in Greater Khingan Mountains
    HAO Shuai, WANG Xing, ZHANG Qiuliang, WANG Bing, TIAN Yuan
    FOREST RESOURCES WANAGEMENT    2022, 0 (2): 75-81.   DOI: 10.13466/j.cnki.lyzygl.2022.02.011
    Abstract437)   HTML16)    PDF (2457KB)(101)       Save

    Fire is an important influencing factor of forest ecosystem. The development of remote sensing technology provides a powerful technical means for forest fire monitoring and loss estimation. Based on Landsat images,the extraction abilities of seven common remote sensing indexes (NDVI,EVI,GEMI,BAI,NBR,dNBR,NDSWIR) for the burned area in 1987,2003 and 2015 of Greater Khingan Mountains were compared and analyzed,so as to select the best remote sensing index suitable for the extraction of burning areas in Greater Khingan Mountains. Through the comparative analysis of the remote sensing indexes and the separation index,the following results were obtained:(1) after the fire,the spectral characteristics of vegetation changed correspondingly. The remote sensing index based on near-infrared band can distinguish the burned area from the normal vegetation. (2) The dNBR was the best remote sensing index for extracting the burned area in Greater Khingan Mountains,followed by the NBR,BAI and NDSWIR,the NDVI and EVI were the worst. (3) The areas of three burned areas based on dNBR were 3 145.23,197 726.67 and 48.06 hm2,respectively.

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