文献类型： 外文期刊
第一作者： Shang, C.
作者： Shang, C.;Shang, C.;Zhang, Q.;Zhang, H. L.;Li, J. K.;Liu, H. Y.;Liu, J. L.;Zhu, R. F.;Kong, X. L.;Chen, J. S.
作者机构：
关键词： Nitrogen addition; Litter decomposition; CO2 emissions; Sheepgrass meadow steppe
期刊名称：BULGARIAN CHEMICAL COMMUNICATIONS （ 影响因子：0.242； 五年影响因子：0.322 ）
ISSN： 0324-1130
年卷期： 2017 年 49 卷
页码：
收录情况： SCI
摘要： In order to examine the effect of species (S) and nitrogen (N) on litter decomposition rate and the cumulative CO2 emissions, litter from three species and soil samples subjected to different N-addition treatments (CK, LD, MD, HD) were collected from a sheepgrass (Leymus chinensis Tzvel) meadow steppe. We found litter of L. chinensis had higher initial nitrogen content and lower carbon to nitrogen ratios and decomposed faster than that of A. hirta while each species decomposing in isolation. Moreover, N addition significantly enhanced litter decomposition rate of each species. Estimated litter decay rate constant (k) under N-free treatments was significantly lower than expected based on N-added soils results, while the k was affected by nitrogen addition and increased by amount of nitrogen addition, indicating exogenous N additions could positive effects, and the positive effects of N additions on litter decomposition could influence litter decomposition and, therefore, Carbon as well as nutrient cycling in sheepgrass meadow steppe.
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