基于人地关系理论的荒漠化—绿洲化演变研究——以新疆于田县为例

从人地关系理论出发,以土地利用变化为切入点,通过野外调查和遥感动态监测对干旱区绿洲荒漠化一绿洲化演变机制进行了研究。在考察数据和对遥感图像的分类结果评价的基础上对干旱区绿洲土地利用/土地覆盖空间动态变化进行规律性分析得出,由于水土开发失调,人口数量的变化和国家政策和制度变化等原因导致干旱区绿洲人地关系矛盾突出,较大地影响了当地经济发展和实现区域可持续发展的目标。提出只有协调人地关系,加强区域地理建设才是使干旱区绿洲地区趋于绿洲化,避免荒漠化的惟一道路。

Study of Reversible Processes of Oasis and Desertification Based on Man-earth Relationship Theory——Taking Yutian County of Xinjiang Wei Autonomous Region for an Example

Through field surveys and remote sensing dynamic monitoring,reversible processes of oasis and desertifi- cation in the arid oasis region were studied by proceeding from men-earth relationship theory and taking land use change as a breakthrough point.On the basis of field survey data and evaluation of remote sensing image classifica- tion,dynamic and spatial changes in both land use and land cover in the region were analyzed.It was found that abused water and soil resources,increased population,changes in national policies and institution and other factors led to sharp contradictions between men and the earth.This has the greater impact on local economic development and the achievement of sustainable development.Accordingly,it is proposed that the only way to prevent desertifi- cation and restore oasis is to coordinate man-earth relationship and strengthen regional geographic building.