Effect of disturbance by plateau pika on soil nitrogen stocks in alpine meadows

doi:10.1016/j.geoderma.2020.114392

	Effect of disturbance by plateau pika on soil nitrogen stocks in alpine meadows
	Pang, Xiao Pan 1; Yu, Cheng Qun 2; Zhang, Jing 1; Wang, Qian 1; Guo, Zheng Gang 1; Tian, Yuan 2,3
刊名	GEODERMA
	2020-08-01
卷号	372 页码:8
关键词	Total nitrogen Inorganic nitrogen Ammonium nitrogen/nitrate nitrogen ratio Small burrowing herbivore Qinghai-Tibetan Plateau
ISSN号	0016-7061
DOI	10.1016/j.geoderma.2020.114392
通讯作者	Guo, Zheng Gang(guozhg@lzu.edu.cn) ; Tian, Yuan(tiany.13s@igsnrr.ac.cn)
英文摘要	The presence of small burrowing herbivores often cause extensive disturbance to the grassland soil nutrient stocks. This study investigated the effect of small burrowing herbivore presence, the plateau pika (Ochotona curzoniae), and variation in disturbance intensity on soil nitrogen stocks at five alpine meadow sites. Disturbed plots occupied by plateau pikas consist of burrows and their associated bare soil patches in a matrix of continuous alpine meadow. The percentage of the bare soil area in a disturbed plot was used as a proxy for disturbance intensity of plateau pikas. This study showed that the soil total nitrogen stock was lower of bare soil than vegetated soil within disturbed plots, while ammonium nitrogen (NH4+-N), nitrate nitrogen (NO3--N), inorganic nitrogen and ammonium nitrogen/nitrate nitrogen ratio (ANR) were higher in bare soil than vegetated soil within the disturbed plots. This study further showed that the NH4+-N, inorganic nitrogen and ANR of disturbed plots were higher than those of undisturbed plots, whereas soil total nitrogen and the NO3--N stock was not different between disturbed plots and undisturbed plots. This study also showed that the soil total nitrogen, NH4+-N and inorganic nitrogen stocks of disturbed plots were higher at intermediate disturbance intensities of plateau pikas, whereas the NO3--N stock and ANR were not related to disturbance intensities. These results suggest that the NH4+-N and inorganic nitrogen stocks were higher in the presence of plateau pikas, and intermediate disturbance intensity of plateau pikas was beneficial for soil quality due to higher soil total nitrogen, NH4+-N and inorganic nitrogen stocks. The findings of this study present a possible approach for estimating how the presence of a small burrowing herbivore influences grassland soil nitrogen stock.
资助项目	Changjiang Scholars and Innovative Research Team in University[IRT17R50] ; Major Project of Xizang autonomous region[XZ201901NA03] ; National Natural Science Foundation of China[31172258]
WOS关键词	QINGHAI-TIBETAN PLATEAU ; OCHOTONA-CURZONIAE ; RELATIVE AVAILABILITY ; INORGANIC NITROGEN ; CARBON ; VEGETATION ; GRASSLAND ; ECOSYSTEM ; FERTILIZATION ; REVEGETATION
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000535713600005
资助机构	Changjiang Scholars and Innovative Research Team in University ; Major Project of Xizang autonomous region ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159554]
专题	中国科学院地理科学与资源研究所
通讯作者	Guo, Zheng Gang; Tian, Yuan
作者单位	1.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Key Lab Grassland Livestock Ind Innovat,Minist Ag, Lanzhou 730020, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Lhasa Natl Ecol Res Stn, 11A Datun Rd, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Pang, Xiao Pan,Yu, Cheng Qun,Zhang, Jing,et al. Effect of disturbance by plateau pika on soil nitrogen stocks in alpine meadows[J]. GEODERMA,2020,372:8.
APA	Pang, Xiao Pan,Yu, Cheng Qun,Zhang, Jing,Wang, Qian,Guo, Zheng Gang,&Tian, Yuan.(2020).Effect of disturbance by plateau pika on soil nitrogen stocks in alpine meadows.GEODERMA,372,8.
MLA	Pang, Xiao Pan,et al."Effect of disturbance by plateau pika on soil nitrogen stocks in alpine meadows".GEODERMA 372(2020):8.