单 位：
北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室
关键词：
植被稳定性;稳定比;植被多样性;盐碱度;四儿滩湿地
摘 要：
以宁夏四儿滩湿地及其周围植被为研究对象,利用法国生态学专家M.Godron提出的方法测定植被稳定性,研究结果表明:测定的3个样地的稳定比分别为34/66、38/62、37/63,其中样地1距离湿地最近,其土壤水分含量最高,样地稳定比最大,说明水分对植被稳定性有正向的影响.但是3个样地的稳定比与稳定点20/80均有很大差距,表明四儿滩湿地的植被不稳定,其中过度放牧以及环境压力是影响植被稳定性的因素之一,应对其加强保护,促使植被演替逐步趋于稳定,以保护湿地中丰富的资源.
译 名：
Vegetation Stability of Siertan Wetland in Ningxia
作 者：
YANG Xiu-lian,ZHANG Ke-bin(College of Soil and Water Conservation,Soil and Water Conservation Key Laboratory of Ministry of Education,Beijing Forestry University,100083 Beijing,China)
关键词：
vegetation stability;stabilization ratio;vegetation diversity;salinity and alkalinity;Siertan wetland
摘 要：
Taking the vegetation of Siertan wetland as the study object,the stability of the vegetation was determined using the method proposed by French ecologist M.Godron.The results indicate that the stabilization ratio of three sample plots are 34/66,38/62 and 37/63 respectively.The distance from sample plot 1 to wetland is the shortest,the soil water content is the highest,and the stabilization ratio is also the biggest,which implies the positive effect of water on vegetation stability.However,there is a big gap between the stabilization ratio of all the three plots and 20/80,which indicates that the vegetation of Siertan wetland is not stable.Overgrazing and environmental stress are the main factors for unstable vegetation.
