福建农业学报2016，Vol.31Issue(5)：497-502,6.
广西桂林不同植被覆盖下土壤含水量空间变异性研究
Spatial Variability of Water Content in Soil Covered Under Different Vegetations in Guilin,Guangxi
摘要
Abstract
In the experimentation fields at Guilin Academy of Agricultural Sciences ,the soil (0-6 cm in depth) on the plot ,where soybeans ,sugarcanes ,or peartrees was gown ,was sampled to study the variation and spatial distribution of its water content .The results showed that (a) rainfall was the key factor affecting the water content in the surface soil ;(b) tillage affected the overall water content to a certain extent ;(c) the water content in the soil of the pear tree plotwas the highest ,followed by that of the sugarcane field ,and the soybean lot had the lowest water content in soil ;(d) the spatial distributions of water content in these areas ,which varied onmoisture levels , hada moderate degree of spatial correlation ;(e) the spatial distributions of water content in soilwere affected by the rainfall ,and also human factors in varingdegrees ;and (f) the vegetation coverages and artificial disturbances were factors in the spatial variability of the water content in the soils ,however ,since the distribution at localities with relatively high water levels were stable , the soil might be able tomakenecessary adjustments by itself . The information obtained could benefit studies ondrought prevention for agricultural lands ,irrigation for farming ,and management for reducing soil erosion in the karst regions in the province .关键词
喀斯特地区/土壤含水量/地统计学/空间变异性Key words
karst area/soil water content/geostatistics/spatial variability分类
农业科技引用本文复制引用
彭扬建,甘磊,马蕊,张静举,陶焕壮,张中彬..广西桂林不同植被覆盖下土壤含水量空间变异性研究[J].福建农业学报,2016,31(5):497-502,6.基金项目
国家自然科学基金（41501230）；广西自然科学基金（2014GXNSFBA118098）；广西矿冶与环境科学实验中心和广西高等学校高水平创新团队及卓越学者计划项目 （）
