At present there are many different research methods existing about how to judge the risks which could lead to desertification in arid area of China.Geographical landscape indicates different characteristics in its own region,The geographic factors、geological factors,landscape and sub-factor can affect with each other besides the big influence from outside.Through the interpretation of RS about the Hami district,the risk drawing method is feasible,comparable,verifiable,at the same time,the exact numbers of the desertification or the tendency could be draw out or interpreted by it.%目前,有关我国干旱半干旱地区的土地沙漠化风险判断一直存在不同的研究方法.各个地区有着自己独特的地理景观,除了区域整体外来因素影响外,地理、地质因子、景观因子、次因子之间相互作用影响也是非常重要的.通过对哈密地区遥感影像的解译数据与专家经验法则的对比分析,来验证风险绘图法在干旱半干旱地区的可行性、可比较性、可检验性,并利用沙化风险绘图法来说明或预测土地变化趋势及确定区域沙化的相对准确的风险指数.
展开▼
