中国岩溶2017，Vol.36Issue(2)：202-206,241,6.DOI:10.11932/karst20170207
贵州喀斯特峰丛洼地石漠化区土壤物理特征时空分异
Spatiotemporal variations of soil physical characteristics in rocky desertification areas of Guizhou karst-cluster depression
摘要
Abstract
The karst peak cluster depression is ranked as the second place of eight rocky desertification control areas in our country,which is of 3.1 million hm2.Guizhou province is the region with most serious rocky desertification nationwide.In combination of field investigation with laboratory analysis and using SPSS19.0 statistics method,this work focused on the change of soil physical characteristics in different seasons and different landform parts of this region.The results show that,(1) There is big spatial and temporal differentiations.Besides a few loci with weak variation,others are characterized by medium degrees of variation related to complex and varied habitat types and heterogeneity of habitat height.(2) Soil physical characteristics do not change significantly with slopes,while showing prominent variations in different landforms (upper,middle and lower slopes) and different seasons (spring,summer,autumn,winter).(3) For different vegetation types,in addition to the non-capillary porosity,soil physical characteristics such as natural water content change significantly.In the areas with shrubbery and secondary woodland (economic fruit woods),the soil is relatively loose and the permeability is good,while in the coniferous forests or grassland areas,the soil is viscous and heavy,and the permeability is relatively poor.关键词
喀斯特峰丛洼地/石漠化区/土壤物理特征/时空分异/贵州Key words
karst peak-cluster depression/rocky desertification area/soil physical characteristics/temporal and spatial variation/Guizhou Province分类
农业科技引用本文复制引用
李安定,郭春艳,符裕红,龙秀琴..贵州喀斯特峰丛洼地石漠化区土壤物理特征时空分异[J].中国岩溶,2017,36(2):202-206,241,6.基金项目
国家重点研发计划项目[2016YFC050260404] （）
贵州省科技计划项目(黔科合支撑[2016]2525号) （黔科合支撑[2016]2525号）
贵州省科学技术基金项目(黔科合J[2013]2236号) （黔科合J[2013]2236号）
贵州省重大应用基础项目(黔科合JZ字[2014]200208) （黔科合JZ字[2014]200208）
广州市产学研协同创新重大专项[201604020006] （）
贵州省农业攻关项目[黔科合NY字(2012)3025] （2012）
