草业学报Issue(6)：313-319,7.DOI:10.11686/cyxb20140637
黄土高原半干旱区天然草地群落结构与土壤水分关系
Plant community structure and soil moisture in the semi-arid natural grassland of the Loess Plateau
摘要
Abstract
Climate change has resulted in altered hydrothermal conditions and variation in soil moisture content which affects plant community structure and function on the Loess Plateau.The effect of soil water on the plant community in the semiarid natural grassland of the Loess Plateau was investigated using a large scale ran-domized design trial.Key results were:1 )Above-ground biomass and litter biomass were significantly posi-tively correlated with soil water content.2 )Plant diversity and species richness were significantly positively correlated with soil moisture.3)Plant functional groups were also affected by soil water content;both grass and legume species increased significantly with increase in soil water content,whereas forbs decreased signifi-cantly.It was concluded that soil moisture is one of the most important factors limiting community productivi-ty and plant species diversity.Additionally,grass species may be able to indicate or reflect soil moisture sta-tus.Soil moisture changes may be driving plant community succession in semi-arid grassland.关键词
天然草地/土壤水分/生物量/物种多样性/半干旱区Key words
nature grassland/soil water/biomass/plant diversity/semi-arid region分类
农业科技引用本文复制引用
张志南,武高林,王冬,邓蕾,郝红敏,杨政,上官周平..黄土高原半干旱区天然草地群落结构与土壤水分关系[J].草业学报,2014,(6):313-319,7.基金项目
国家自然科学基金（41371282），中国科学院战略性先导科技专项（XDA05050403）和中国科学院西部行动项目（KZCX2-XB3-13）资助。 （）
