中文摘要：

土壤湿度是水文、气象和农业等领域的重要基础信息。文中基于MODIS地表温度和植被指数数据,构建Ts-NDVI特征空间,定量揭示了西辽河流域土壤湿度时空分布格局,并进一步讨论了土壤湿度的主要影响要素。研究表明：1）西辽河流域植被生长季土壤湿度总体以正常（0.4

英文摘要：

Soil moisture is the important information for hydrology, weather, agriculture and other fields. We an- alyzed quantitatively the spatial pattern of soil moisture in the West Liaohe river basin, and further discussed the main factors influencing the soil moisture based on the datasets of land surface temperature and vegetation index from MODIS products, by extracting Temperature - Vegetation Drought Index. The results showed that ： 1 ） The soil moisture was normal and light drought in general in the vegetation growing season. 2） The central region showed dry situations in the west Liaohe river basin, and upstream and midstream showed dry situations, the southwest region and rivers showed wet situations. 3 ） The spatial distribution of soil moisture in the area was ob- viously affected by the land cover, altitude and precipitation. There was differences in the different land covers, the highest in the woodland and the lowest in the sandy land. The soil moisture showed light wet- light drought -wet trend. The relationship between the soil moisture and the precipitation was ＂S＂ -like reverse.