Using remote sensing to assess impacts of land management policies in the Ordos rangelands in China

作     者：Weicheng Wu Eddy De Pauw Claudio Zucca 

作者机构：International Center for Agricultural Research in Dry Areas(ICARDA)/CGIARAmmanJordan Pedology and Land DegradationDepartment of Agriculture and Desertification Research Group(NRD)University of Sassari07100 SassariItaly 

出 版 物：《International Journal of Digital Earth》 (国际数字地球学报（英文）)

年 卷 期：2013年第6卷第S2期

页      面：81-102页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 0708[理学-地球物理学] 0835[工学-软件工程] 0704[理学-天文学] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：land use/cover change multi-temporal remote sensing human intervention spatial variability NDVI trajectory 

摘      要：Implementation of land management policies influences land use and hence causes environmental *** the Ordos rangelands in China as a case study,this paper explores the potential of remote sensing to assess in dryland areas the impacts of policies on the *** Landsat images of the period 19782010 were acquired and those corresponding to the starting dates of implementation of different policies were selected for land-cover change analysis;others were used to check the detected change and track the normalized difference vegetation index(NDVI)trajectory matched with time series of meteorological data for calibration of natural response of rangelands to *** results indicate that policy impacts are complex and include both positive and negative aspects depending on the locality in *** one hand,policies have aroused the enthusiasm of people in agricultural production and sandcontrol leading to the recovery of about 2618 km2 of desertified rangeland and sandy land,and economic growth,on the other hand,provoked vegetation degradation with an accumulated area of 2439 km2 when policies cannot reconcile the conflict between environmental protection and the interest of rural ***,degradation is not absolute and can be mitigated by the implementation of rational policies.