Survey and mapping of desertification of the whole Asia

荒漠化的情况并不十分清楚。这项研究的目的是利用NOAA AVHRR数据、现有地图和考察队绘制整个亚洲的荒漠化地图。本研究包括：1.从荒漠化的成因和程度的角度建立荒漠化分类系统; 2.利用AVHRR数据制作整个亚洲的土地覆盖图和归一化植被指数图，作为荒漠化分析的参考; 3.对中亚包括哈萨克斯坦、乌兹别克斯坦和土库曼斯坦在内的干旱地区进行考察; 4.利用上述分类系统制作荒漠化图及其数字化图。1.荒漠化分类系统2.分析中亚、中东、中国、蒙古、阿富汗、巴基斯坦等亚洲各区域的荒漠化情况，印度3. 1：10，000，000比例的亚洲荒漠化地图4.亚洲荒漠化数字化地图

The situation of desertification is not known well. The objective of this study is to map desertification of the whole Asia using NOAA AVHRR data, existing maps, and expeditions. This study includes:1.Establishment of classification system of desertification from the view points of cause and degree of desertification.2.Production of land cover map and Normalized Difference Vegetation Index(NDVI) map from AVHRR data for the whole Asia as references for analysis of desertification.3.Expedition of drylands of Central Asia including Kazakhstan, Uzbekistan, and Turkmenistan4.Production of desertification map and its digitized map based on the above classification system using.The outputs/products of this study are:1.Classification system of desertification2.Analysis of desertification in each region in Asia such as Central Asia, Middle East, China, Mongolia, Afghanistan, Pakistan, India3.Desertification map of Asia with a scale of 1:10,000,0004.Digitized desertification map of Asia