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Heavily intensified grazing reduces root production in an Inner Mongolia temperate steppe

文献类型：期刊论文

作者Bai, Wenming; Fang, Ying1; Zhou, Meng1; Xie, Ting1; Li, Linghao; Zhang, Wen-Hao
刊名AGRICULTURE ECOSYSTEMS & ENVIRONMENT
出版日期2015
卷号200页码:143-150
关键词Livestock grazing Root production Root mortality Standing crop Temperate grassland
ISSN号0167-8809
DOI10.1016/j.agee.2014.11.015
文献子类Article
英文摘要The temperate steppe in Inner Mongolia is China's largest steppe. Heavily intensified grazing has been widely used in an Inner Mongolia grasslands. However, the effects of the grazing on fine root demography have been little studied in grassland ecosystems. In this study, we conducted in situ field measurements for root production, mortality, and standing crop in Inner Mongolia steppe under both ungrazed and heavily intensified grazed conditions using the improved rhizotron techniques. Our results showed that root production and mortality in the steppe displayed seasonal dynamic patterns, whereas no clear seasonal dynamic patterns for the standing crop were detected. Long-term heavily intensified grazing did not alter seasonal dynamic patterns of root production, mortality and standing crop. Root production, mortality and standing crop distributed in different soil layers responded to livestock grazing differently. The grazing increased root production, mortality and standing crop in 0-10 cm soil layer, while it reduced root production, mortality and standing crop in 10-20 and 20-30 cm soil layers, with an overall reduction in the three variables across 0-30 cm soil layer. The grazing-induced reduction in root production, mortality and standing crop was mainly accounted for by reductions in aboveground biomass and soil water contents. These results indicate that long-term heavily intensified grazing can lead to the loss of soil organic matters and nutrients in the steppe. Thus, appropriate measures have to be taken for an effective management of the livestock grazing in Inner Mongolia steppe. (C) 2014 Elsevier B.V. All rights reserved.
学科主题Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
出版地AMSTERDAM
电子版国际标准刊号1873-2305
WOS关键词BELOW-GROUND BIOMASS ; SOIL CARBON ; ATMOSPHERIC CO2 ; GRASSLAND ; TURNOVER ; NITROGEN ; DYNAMICS ; RESPONSES ; ECOSYSTEM ; VEGETATION
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000348952400016
出版者ELSEVIER
资助机构State Key Basic Research Development Program of China [2011CB403204] ; National Natural Science Foundation of China [31370468, 31130008, 31070432]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/25620]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Bai, Wenming,Fang, Ying,Zhou, Meng,et al. Heavily intensified grazing reduces root production in an Inner Mongolia temperate steppe[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2015,200:143-150.
APA Bai, Wenming,Fang, Ying,Zhou, Meng,Xie, Ting,Li, Linghao,&Zhang, Wen-Hao.(2015).Heavily intensified grazing reduces root production in an Inner Mongolia temperate steppe.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,200,143-150.
MLA Bai, Wenming,et al."Heavily intensified grazing reduces root production in an Inner Mongolia temperate steppe".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 200(2015):143-150.

入库方式： OAI收割

来源：植物研究所

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