Response of Soil Respiration to Grazing in an Alpine Meadow at Three Elevations in Tibet
Fu, G; Zhang, XZ; Yu, CQ; Shi, PL; Zhou, YT; Li, YL; Yang, PW; Shen, ZX
2014
发表期刊SCIENTIFIC WORLD JOURNAL
ISSN1537-744X
页码-
摘要Alpine meadows are one major type of pastureland on the Tibetan Plateau. However, few studies have evaluated the response of soil respiration (R-s) to grazing along an elevation gradient in an alpine meadow on the Tibetan Plateau. Here three fenced enclosures were established in an alpine meadow at three elevations (i.e., 4313 m, 4513 m, and 4693 m) in July 2008. We measured R-s inside and outside the three fenced enclosures in July-September, 2010-2011. Topsoil (0-20 cm) samples were gathered in July, August, and September, 2011. There were no significant differences for R-s, dissolved organic C (DOC), and belowground root biomass (BGB) between the grazed and ungrazed soils. Soil respiration was positively correlated with soil organic C (SOC), microbial biomass (MBC), DOC, and BGB. In addition, both R-s and BGB increased with total N (TN), the ratio of SOC to TN, ammonium N (NH4+-N), and the ratio of NH4+-N to nitrate N. Our findings suggested that the negligible response of R-s to grazing could be directly attributed to that of respiration substrate and that soil N may indirectly affect R-s by its effect on BGB.
文章类型Journal
学科领域Science & Technology - Other Topics
研究领域[WOS]Multidisciplinary Sciences
关键词[WOS]NET NITROGEN MINERALIZATION ; DISSOLVED ORGANIC-CARBON ; MICROBIAL BIOMASS ; INTERANNUAL VARIABILITY ; ECOSYSTEM RESPIRATION ; CO2 EFFLUX ; PLATEAU ; GRASSLANDS ; CLIMATE ; STORAGE
收录类别SCI
语种英语
WOS记录号WOS:000333915600001
出版者HINDAWI PUBLISHING CORPORATION
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.igsnrr.ac.cn/handle/311030/44599
专题生态系统网络观测与模拟院重点实验室_生态网络实验室
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GB/T 7714
Fu, G,Zhang, XZ,Yu, CQ,et al. Response of Soil Respiration to Grazing in an Alpine Meadow at Three Elevations in Tibet[J]. SCIENTIFIC WORLD JOURNAL,2014:-.
APA Fu, G.,Zhang, XZ.,Yu, CQ.,Shi, PL.,Zhou, YT.,...&Shen, ZX.(2014).Response of Soil Respiration to Grazing in an Alpine Meadow at Three Elevations in Tibet.SCIENTIFIC WORLD JOURNAL,-.
MLA Fu, G,et al."Response of Soil Respiration to Grazing in an Alpine Meadow at Three Elevations in Tibet".SCIENTIFIC WORLD JOURNAL (2014):-.
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