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利用2003年1月至2012年12月120个月的GRACE数据,基于高斯平滑和平滑滤波手段,辅以TRMM降水量、河网分布、蒸散发、径流等数据,反演了新疆陆地水储量,分析了10年间陆地水储量的时空变化情况。结果表明:2003—2012年新疆地区陆地水储量持续减少,但后半期水储量的减幅有所减缓;陆地水储量具有明显降低趋势的地区范围逐步向新疆东部迁移,水储量具有上升趋势的面积有逐渐增加的倾向,但是这种显著上升趋势所涵盖的面积没有占据研究区的主导地位;GRACE的年周期值和陆地水储量深度值的波动趋势一致;TRMM降水变化趋势与GRACE反演的陆地水变化趋势相辅相成,相互验证。该项研究可为新疆合理用水及缺水地区水资源合理的开发等提供理论依据。
Based on GRACE data from January 2003 to December 2012, based on the Gaussian smoothing and smoothing filtering, together with the data of TRMM precipitation, river network distribution, evapotranspiration and runoff, the terrestrial water reserves, The temporal and spatial variations of terrestrial water reserves were analyzed. The results showed that the terrestrial water reserves in Xinjiang continued to decrease from 2003 to 2012, but the decrease in water reserves slowed down in the latter half of the year. The area with a clear decreasing trend of terrestrial water reserves gradually migrated to the eastern part of Xinjiang and the area of water reserves had an upward trend However, the area covered by this significant upward trend did not occupy the dominant position in the study area. The annual trend of GRACE fluctuated in the same way as the trend of terrestrial water reserves. The trend of TRMM precipitation was similar to that of GRACE Water trends complement each other and verify each other. This study can provide a theoretical basis for rational water use in Xinjiang and reasonable water resources development in water-scarce areas.