干旱半干旱区沙漠化土地水分动态研究进展

Research Advances on Moisture Dynamic of Desertified Lands in Arid and Semi-arid Regions

随着土地沙漠化危害的不断加剧,干旱、半干旱区沙漠化土地水分动态的研究显得至关重要。通过回顾国内外沙地水分动态的研究现状,对研究中存在的问题作了简要评述,指出了目前尚未涉及的研究空白和需要进一步深入的研究内容。认为今后的研究工作应注重从方法上的突破,试验手段的创新和研究领域的拓展三个方面来进行。

Desertification is a main environmental problem causing extensive attention all over the world.China is one of the countries to be affected severely by desertification.Land desertification mostly occurred in arid,semi-arid and semi-wet areas. Soil water has very important effect on ecosystem stabilization,structure and function of the areas,even affects the probability holding back desertification harm.So,it is important to systematically study space-time pattern and dynamic laws of sandy land moisture,which have crucial significance to prevent desertification,renews the degenerative ecosystem.This review generalizes the internal and overseas research actuality of sandy land moisture dynamics,points out the present problems and vacancies in research.It is suggested that future research should give attention from having a methodological breakthrough,innovating the experimental instrument and developing the research field.