Qi Shan-Zhong, Li Xiao-Yu, Duan Hui-Ping
College of Population, Resources and Environment, Shandong Normal University, No. 88 Wenhua East Road, Jinan 250014, Shandong Province, People's Republic of China.
Environ Monit Assess. 2007 Nov;134(1-3):313-20. doi: 10.1007/s10661-007-9622-5. Epub 2007 Mar 1.
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 km(2), respectively; but grassland and forestland areas decrease rapidly by 58.06, and 1.76 km(2), 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).
土地利用变化导致土地退化是全球环境变化研究的重点，对中国干旱地区绿洲的稳定性和经济发展具有重要影响。以中国西北温带干旱区典型绿洲——金塔绿洲为研究对象，借助卫星遥感和地理信息系统（GIS）评估了1988 - 2003年期间的土地利用变化动态，并探讨了这些变化与绿洲环境之间的相互作用。识别出六种土地利用类型，即：耕地、林地、草地、水域、城镇建设用地和裸地。结果表明，耕地、城镇建设用地和裸地面积分别大幅增加了30.03、13.35和15.52平方千米；而草地和林地面积分别迅速减少了58.06和1.76平方千米。这些结果还表明，在研究期间整个绿洲内土地利用发生了明显的广泛变化，并导致了严重的环境退化问题（即土地沙漠化、地下水位下降和植被退化）。
