高寒草甸土壤水分空间分布及其影响因子研究进展

Research Advance of Spatial Distribution and Influential Factors of Soil Water in Alpine Meadow

高寒地区是全球气候变化极为敏感的区域,分布着大面积的高寒草甸、高寒草原和沼泽类草原。近来,高寒草甸严重退化,湿地萎缩加剧。土壤水分对土壤系统养分循环和流动起着十分重要的作用。回顾了高寒草甸土壤水分空间分布及其主要影响因子,包括土壤质地、气候因子、地形、植被及人类活动等。土壤水分有其空间分布规律,随水平位置和土壤深度的变化发生相应变化。土壤质地、气候因子、地形、植被及人类活动等因子对土壤水分空间分布具有重要影响。土壤水分空间分布是各种环境因子及人类活动综合作用的结果。

Alpine ecosystem is quite sensitive to global climatic changes,there is a number of typical alpine ecosystems,including alpine meadows,alpine steppes and swamp steppes. In recent years,alpine meadow degraded extremely and swamp shrunk badly. Soil water has important effects on nutrient cycle and flow of soil system The distribution and main causes of soil water,including the factors of soil texture,climate,topography,vegetation and human activities,are reviewed in Alpine Meadow. Spatial distribution of soil water is obvious, Soil moisture changes along with the horizontal position and soil depth. The impacts of soil texture,climate,topography,vegetation and human activities on soil moisture are significant. Spatial distribution of soil water is the result of various environment factors and human activities.