家畜生态学报Issue(9)：23-27,5.
西藏锦鸡儿群落表层土壤粒径空间分布特征及其与土壤水分相关性分析
Spatial Distribution of Soil Particle Size and Its Correlation with Soil moisture in Cragana Tibetica Community
摘要
Abstract
Cragana tTibetica community mainly distributes in Tibetan and Mongolia Plateau ,and plays important roles in the researches for plant evolution ,flora ,and vegetation succession .C .tibetica is a xe-rophytic cushion shrub ,and generally formed uniform and striking nabkhas in the habitat with surface cov -ered by sand .This study compared the soil particle composition between inside and outside of the C .tibet-ica nabkhas ,and analyzed the spatial distribution characteristic of soil particle and its relationship with soil water content in the community by using the method of geosatistics .The results showed that the composi-tion of soil particles inside and outside nebkhas was mainly find sand ,which accounted for more than 50%of the soil .The proportion of coarse sand and silt ranged from 9% to 18% ,and the significant differences were found for grave ,coarse sand and fine sand between inside and outside nabkhas .In C .tibetica com-munity ,the fine sand of the soil showed the largest spatial heterogeneity and smallest distance of spatial autocorrelation ,and the spatial autocorrelation distances of soil particles ranged from 0 .86 to 1 .85 m .In addition ,soil water content showed significant positive relationship with fine sand content of the soil but negative one with grave and coarse sand content .The findings can provide reference for rational utilization and protection of C .tibetica .关键词
西藏锦鸡儿/沙堆/土壤粒径/空间异质性/土壤水分Key words
Caragana tibetica/nabkhas/soil particle-size/soil spatial heterogeneity/soil moisture分类
农业科技引用本文复制引用
仓木拉,木兰,王晓栋,刘尚华,王卓,张璞进..西藏锦鸡儿群落表层土壤粒径空间分布特征及其与土壤水分相关性分析[J].家畜生态学报,2014,(9):23-27,5.基金项目
国家自然科学基金（31300360）；内蒙古自然科学基金（200408020501）；内蒙古农牧业科学院青年创新基金 （）
