文献类型：期刊文献

英文题名：Effects of grassland degradation and precipitation on carbon storage distributions in a semi-arid temperate grassland of Inner Mongolia, China

作者：Li, Xiaobing[1,2] Bai, Yunxiao[2] Wen, Wanyu[3] Wang, Hong[2] Li, Ruihua[2] Li, Guoqing[2] Wang, Han[2]

第一作者：Li, Xiaobing

通信作者：Li, XB[1]

机构：[1]Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China;[2]Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China;[3]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China

年份：2017

卷号：85

起止页码：44-52

外文期刊名：ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY

收录：;Scopus(收录号：2-s2.0-85033709753);WOS:【SCI-EXPANDED(收录号:WOS:000418979900006)】；

基金：This work was financially supported by the National Key Basic Research Program of China (2014CB138803), the Natural Science Foundation of China (31570451) and Program for Changjiang Scholars and Innovative Research Team in University (IRT_15R06). The authors wish to express their gratitude to the reviewers and editors for their time and effort.

语种：英文

外文关键词：Grassland; Degradation; Carbon; Distribution

摘要：Environmental degradation influences carbon (C) cycling and storage in grassland ecosystems by altering vegetation productivity. However, the impacts of different degradation intensities on vegetation-soil C distributions in grasslands have not been well documented. We measured C storage in soil, roots, and plants under light, moderate, and severe degradation levels in a typical steppe region of Xilinhot, Inner Mongolia, China in 2011 and 2012. Grassland C storage was highest in soil, followed by roots, and then aboveground plant biomass. Grassland degradation and precipitation significantly influenced C storage distributions. During the dry year (2011), total C storage in vegetation and soil was highest under light degradation. Carbon storage in aboveground plant biomass and roots increased with degradation intensity. During the wet year (2012), C storage was highest in aboveground plant biomass and roots under light degradation. Root biomass tended to be concentrated in the soil surface during the wet year. (C) 2017 Elsevier Masson SAS. All rights reserved.