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

doi:10.1016/j.agee.2014.11.015

	Heavily intensified grazing reduces root production in an Inner Mongolia temperate steppe
	Bai, Wenming; Fang, Ying 1; Zhou, Meng 1; Xie, Ting 1; Li, Linghao; Zhang, Wen-Hao
	2015
发表期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
卷号	200 页码:143-150
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.
关键词	Livestock grazing Root production Root mortality Standing crop Temperate grassland
学科领域	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
DOI	10.1016/j.agee.2014.11.015
收录类别	SCI
语种	英语
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)
WOS记录号	WOS:000348952400016
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1873-2305
资助机构	State Key Basic Research Development Program of China [2011CB403204] ; National Natural Science Foundation of China [31370468, 31130008, 31070432]
作者邮箱	whzhang@ibcas.ac.cn
引用统计	被引频次：61[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	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, Grad Sch, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing, 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.

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