土壤水分时间稳定性研究进展

Research progress on soil moisture temporal stability

土壤水分是陆地生态系统中不可或缺的组成部分,在地表水文过程中起着关键作用,连接着一系列的水文、生态、气候和地质学过程,是陆地生态系统健康运行的关键。以土壤水分时间稳定性概念为主线,从时间稳定性概念、研究方法、应用和影响因素等方面,系统阐述了土壤水分时间稳定性近年来的研究进展,探讨了代表性测点的选取标准以及土壤水分时间稳定性的影响因素。结合目前的研究进展,提出了未来的研究重点:加强多因素综合作用对土壤水分时间稳定性的研究;结合"3S"技术、计算机模拟和野外实测来研究时间稳定性的尺度问题;如何高效选择代表性测点;探讨时间稳定性概念在植被恢复区和气候敏感区的研究与应用。

As an integral part of terrestrial ecosystem and the core of the surface hydrological cycle,soil water connected to a series of hydrology,geology,climate and ecological processes,which is a key part for the healthy operation of the terrestrial ecosystem. Based on the concept of soil moisture temporal stability,we expounded the research progress of the soil moisture temporal stability from the concept of time stability,research methods,its application and influencing factors,and analyzed the selection criteria of the representative point,and the factors affecting the time stability of the soil moisture. In addition,combined with the current research progress,the research emphases in the future are put forward： strengthening the research on the comprehensive function of many factors on the time stability of soil water content; studying the scale problem of the time stability by combining with ＂3 S＂technology,computer simulation and field measurement; choosing the representative points effectively; and conducting the research and application of time stability concept in vegetation restoration and climate sensitive areas.