Oasis land-use change and its environmental impact in Jinta Oasis, arid northwestern China |
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Authors: | Shan-Zhong Qi Xiao-Yu Li Hui-Ping Duan |
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Institution: | (1) College of Population, Resources and Environment, Shandong Normal University, No. 88 Wenhua East Road, Jinan, 250014, Shandong Province, People’s Republic of China;(2) Institute of Applied Ecology, Chinese Academy Sciences, No. 72 Wenhua Road, Shenyang, 110016, Liaoning Province, People’s Republic of China |
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Abstract: | Land use change resulted in land degradation is a focus of research on global environmental changes and plays a significant
role in the stability and economic development of oases in arid regions of China. Jinta Oasis, a typical oasis of temperate
arid zone in northwestern China, was investigated to assess land-use change dynamics during 1988–2003 with the aid of satellite
remote sensing and GIS, and to explore the interaction between these changes and oasis environment. Six land-use types were
identified, namely: cropland, forestland, grassland, water, urban or built-up land, and barren land. The results indicate
that cropland, urban/built-up land, and barren land increase greatly by 30.03, 13.35, and 15.52 km2, respectively; but grassland and forestland areas decrease rapidly by 58.06, and 1.76 km2, respectively. These results also show that obvious widespread changes in land-use occur within the whole oasis over the
study period and result in severe problems of environmental degradation (i.e. land desertification, decline of groundwater,
and vegetation degeneracy). |
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Keywords: | Land use change Oasis environmental change Land degradation Jinta Oasis Arid northwestern China |
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