摘要
本文研究了内蒙古典型草原植被与土壤物理性质之间的关系,结果表明:土壤含水量、土壤电导率、土壤pH值、土壤容重、土壤的三种粒径含量和土壤紧实度等8个土壤物理指标与草地地下生物量相关性较弱;而与草地地上生物量和凋落物具有较强的相关性;根据相关性的强弱,建立了8个土壤物理指标与草地地上生物量、草地地下生物量和凋落物的线性回归模型。
Relationships between soil physical properties and vegetations in typical steppe under different grazing gradients were studied.The results were: 8 soil Physical indicators, including soil water content(CW)、soil conductance(SCD)、 soil pH(pH)、soil bulk density(SBD)、soil sand particle(SP)、soil fraction particle(FP)、 soil clay particle(CP) and soil compaction(SCP),were poorercorrelated withunder-ground biomass;while they were greater correlated with above-ground biomass and litter;Based on the correlation,regression models between the 8 soil indicatorsand under-ground biomass above-ground biomass and littersin typical steppe were established.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2005年第z1期199-203,共5页
Journal of Arid Land Resources and Environment
基金
内蒙古科学技术攻关项目(20030601)
国家自然科学基金重点项目(30360022)
内蒙古自然基金(2005008010407)资助
关键词
典型草原
植被
土壤物理指标
Leymus chinensis Steppe
vegetation
soil physical indicators
