【摘 要】
：
A tight coupling exists between biogeochemical cycles and water availability in drylands,and soil moisture (SM) is the key to the biophysical processes.However,few studies focused on the close couplin
【机 构】
：
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
论文部分内容阅读
A tight coupling exists between biogeochemical cycles and water availability in drylands,and soil moisture (SM) is the key to the biophysical processes.However,few studies focused on the close coupling among soil moisture,soil carbon/nitrogen,and vegetation structure,and the challenge of clarifying these relationships changing with climate gradient in the arid environments is daunting.Thus,soil organic carbon (SOC),total nitrogen (TN),and species richness (SR) were selected as soil-plant system variables,and the tradeoff relationships between SM and these variables and their variations with the precipitation gradient were quantified in the Loess Plateau,China.
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