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利用2003年1月至2013年1月10 yr间的GRACE(Gravity Recovery And Climate Experiment)重力场恢复与气候实验重力卫星数据,辅以TRMM(Tropical Rainfall Measuring Mission)/CMAP(Climate Prediction Center’s Merged Analysis of Precipitation)降水量数、NDVI(Normalized Difference Vegetation Index)数据、DEM(Digital Elevation Model)数据等多种数据源及诸多GIS(Geographic Information System)手段,分析了121个月内研究区陆地水储量的动态变化情况.研究结果表明:⑴自东向西研究区陆地水储量变化程度由微弱逐步变化为非常剧烈;⑵巴尔喀什湖域外流区、鄂毕河流域以及部分叶尼塞河中下游地区的陆地水储量持续增长趋势显著;⑶锡尔河流域、阿姆河流域的交界处、幼发拉底-底格里斯河流域和里海西南海岸交界范围内,陆地水储量呈现了急剧降低的趋势;⑷降水量、蒸散发、地表植被的覆盖变化、地形因素等自然因素均对陆地水储量产生影响作用;⑸陆地水储量最大值出现的时间滞后于降水量最大值出现的时间.
Based on the GRACE (Gravity Recovery And Climate Experiment) Gravity Field Recovery and Climate Experiment gravity satellite data from January 2003 to January 2013, together with TRMM (Tropical Rainfall Measuring Mission) / CMAP (Climate Prediction Center’s Merged Analysis of Precipitation, Normalized Difference Vegetation Index (NDVI) data and Digital Elevation Model (DEM) data and many Geographic Information Systems (GIS) tools were used to analyze the dynamics of terrestrial water reserves in the study area in 121 months The results show that: (1) the degree of change of terrestrial water reserves in the study area from east to west gradually changes from weak to gradual to very severe; (2) terrestrial water in outflow areas of Lake Balkhash, Ob river and parts of the Yenisei River (3) There is a trend of significant increase in reserves; (3) The terrestrial water reserves show a drastic decrease trend at the junction of Syria and Amu rivers, between the Euphrates and Tigris rivers and the southwest coast of the Caspian Sea; (4) Precipitation, evapotranspiration, Surface vegetation cover changes, topographical factors and other natural factors are onshore water reserves Have an impact; ⑸ terrestrial water reserves the maximum time lags behind the maximum precipitation occurs time.