亚热带
生物量(生态学)
仰角(弹道)
土壤呼吸
生态系统
碳循环
环境科学
呼吸
高度(三角形)
滞后
土壤碳
生态学
山地生态
生物
土壤水分
植物
数学
计算机科学
计算机网络
几何学
作者
Kun Lü,Jingjing Wang,Guopeng Wu,Sinuo Lin,Su Yan,Gang Huang
出处
期刊:PubMed
日期:2022-08-08
卷期号:43 (8): 4364-4371
被引量:2
标识
DOI:10.13227/j.hjkx.202110064
摘要
Microbial carbon use efficiency (CUE) refers to the C transformation to microbial biomass from C uptake. The study of soil microbial CUE is very important for understanding the soil C cycle. Here, CUE, Cgrowth, and Crespiration were measured using the 18O-H2O-DNA labeling method at six elevational sites (980-1765 m) in Daiyun Mountain, a subtropical montane forest, to understand the variation characteristics and influencing mechanisms. The results showed that:CUE varied from 0.1 to 0.4 and increased linearly with elevation; CUE was positively correlated with Cgrowth, Crespiration, and qgrowth but negatively correlated with qCO2, indicating that CUE increased with elevation by increasing microbial growth and inhibiting respiration; and temperature was the first controlling factor for the elevation variation in microbial CUE in the subtropical forest ecosystem.
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