地表干扰恢复措施对土壤水分物理性质的影响——以宁南黄土丘陵区典型草原土壤为例  

Influence of Surface Disturbance Restoration Measures on the Soil Moisture Physical Properties of Typical Grassland in Hilly Area of the Loess Plateau in South of Ningxia

作　　者：马红彬[1] 谢应忠[1] 

机构地区：[1]宁夏大学西北退化生态系统恢复与重建省部共建教育部重点实验室宁夏大学农学院草业科学研究所,宁夏银川750021

出　　处：《安徽农业科学》2009年第36期18067-18069,共3页Journal of Anhui Agricultural Sciences

基　　金：宁夏自然科学基金资助项目(NZ0839);宁夏大学科研基金资助项目(ZR200722);高校博士点基金项目(20096401120002);宁夏科技攻关项目

摘　　要：[目的]探讨黄土丘陵区地表干扰恢复措施对土壤水分物理性质的影响。[方法]测定并分析了宁南黄土丘陵区典型草原鱼鳞坑、水平沟和封育3种恢复措施实施5年后土壤0～40、40～100 cm土壤颗粒组成、容重、孔隙度、持水性、水分有效性和水分盈亏状况。[结果]鱼鳞坑、水平沟措施下土壤容重变化不大,但土壤黏粒含量、毛管孔隙和持水性下降,水分有效性和水分盈亏状况改善。[结论]地表干扰恢复措施可改善土壤水分条件,但使土壤持水性降低。[Objective]The research aimed to study the influence on soil moisture physics characteristics under different land disturbances restoration measures in hilly area of the Loess Plateau.[Method]Some characteristics of soil particle compositions,bulk density,porosity, moisture-holding capacity,moisture availability and surplus-deficit status of soil moisture content in the soil depth of 0-40 cm and 40-100 cm under restoration measures named fish-scale pit,parallel ditches and hill closure were surveyed and analyzed.These restoration measures had carried out five years in typical steppe in hilly area of the Loess Plateau in south of Ningxia.[Result]In the measures of fish-scale pits and parallel ditches,soil had little increasing in bulk density,lower in ratio of clay,capillary porosity,and moisture-holding capacity while soil moisture availability and surplus-deficit status of soil moisture content were improved.[Conclusion]Land disturbances restoration measures could improve the soil moisture content,but decrease the soil moisture-holding capacity.

关 键 词：地表干扰恢复措施 典型草原 土壤水分物理性质 黄土丘陵区 

分 类 号：S152[农业科学—土壤学]