Variation Characteristics of NDVI in the National Key Ecological Engineering Areas in Ulanqab,Inner Mongolia

doi:10.13466/j.cnki.lyzygl.2018.04.004

Abstract

Abstract:

The key ecological projects in Ulanqab City include the natural conservation project in the upper and middle reaches of the Yellow River,the project of returning cropland to forest,the Beijing-Tianjin sandstorm source control project,the project for protection of wild animals and plants and the nature reserve,the non-commercial forest project,and other forestry projects.In order to clarify the ecological benefits of the key forestry ecological projects in Ulanqab City,we have studied the changes in NDVI from 2005 to 2013.The results show that Beijing-Tianjin sandstorm source control project in Ulanqab is the largest in area and most widely distributed.The average NDVI of Beijing-Tianjin sandstorm source control project,the project of returning cropland to forest,the non-commercial forest project and other forestry projects area increased by 0.017~0.020 per year,while in the area of the natural conservation project in the upper and middle reaches of the Yellow River,and the project for protection of wild animals and plants and nature reserve,the average NDVI increased by only 0.014 3 and 0.013 2 each year.From the administrative region aspect,the average NDVI of of Qahar Right Wing Front Banner,Jining,Qahar Right Wing Rear Banner,Huade County,Zhuozi County and Qahar Right Wing Middle Banner increased by 0.20% 0.25,while the increase of NDVI in Sizi Wang Banner,Xinghe County,Shangdu County,Liangcheng County,Fengzhen are only between 0.12 and 0.20.In a word,it is of great significance to strengthen the construction of the key ecological projects for the increase of vegetation in Ulanqab City.

Key words: key ecological projects, spatial distribution, NDVI, Ulanqab City, NDVI changes

CLC Number:

F316.2

MENG Pei, Liu Xueming. Variation Characteristics of NDVI in the National Key Ecological Engineering Areas in Ulanqab,Inner Mongolia[J]. FOREST RESOURCES WANAGEMENT, 2018, 0(4): 17-21.

Figures/Tables 7

Fig.1

Fig.2

Tab.1

Fig.3

Fig.4

Fig.5

Tab.2

旗县(市、区)	工程名称
旗县(市、区)	黄河上中游地区天保工程	退耕还林工程	京津风沙源治理工程	野生动植物保护及自然保护区	重点公益林经营工程	其它林业工程	总计
四子王旗	0.00	0.00	14.21	0.00	0.00	34.65	48.86
兴和县	0.00	0.00	10.08	1.23	0.00	0.86	12.17
商都县	0.00	0.00	9.22	0.00	0.00	4.04	13.26
察哈尔右翼前旗	0.00	0.00	4.84	0.04	0.00	3.23	8.12
凉城县	4.20	2.89	3.42	0.00	0.00	4.22	14.74
集宁区	0.00	0.00	0.96	0.00	0.00	0.15	1.11
察哈尔右翼后旗	0.00	4.98	5.97	0.00	0.76	2.58	14.28
化德县	0.00	0.00	10.81	0.00	0.00	0.18	10.99
卓资县	3.45	2.72	2.56	2.35	0.00	0.05	11.12
丰镇市	0.00	0.00	7.25	0.00	0.00	2.37	9.62
察哈尔右翼中旗	4.75	3.40	4.63	0.00	0.00	0.71	13.49
合计	12.40	13.99	73.94	3.62	0.76	53.05	157.76

2005—2013年植被指数平均变化量		2005—2013年植被指数平均变化量
四子王旗	0.135	察哈尔右翼后旗	0.208
兴和县	0.128	化德县	0.230
商都县	0.197	卓资县	0.230
察哈尔右翼前旗	0.206	丰镇市	0.140
凉城县	0.192	察哈尔右翼中旗	0.222
集宁区	0.247

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