Small-scale switch in cover-perimeter relationships of patches indicates shift of dominant species during grassland degradation

doi:10.1093/jpe/rtaa057

	Small-scale switch in cover-perimeter relationships of patches indicates shift of dominant species during grassland degradation
	Song, Ming-Hua 1,2; Cornelissen, Johannes H. C.3; Li, Yi-Kang 2; Xu, Xing-Liang 1; Zhou, Hua-Kun 2; Cui, Xiao-Yong 4; Wang, Yan-Fen 4; Xu, Rong-Yan 5; Feng, Qi 6
刊名	JOURNAL OF PLANT ECOLOGY
	2020-12-01
卷号	13 期号:6 页码:704-712
关键词	grassland degradation state transition Tibetan Plateau trade-off vegetation patchiness
ISSN号	1752-9921
DOI	10.1093/jpe/rtaa057
通讯作者	Song, Ming-Hua(songmh@igsnrr.ac.cn) ; Li, Yi-Kang(ykli@nwipb.cas.cn)
英文摘要	Aims Grasslands are globally threatened by climate changes and unsustainable land-use, which often cause transitions among alternative stable states, and even catastrophic transition to desertification. Spatial vegetation patch configurations have been shown to signify such transitions at large spatial scale. Here, we demonstrate how small-scale patch configurations can also indicate state transitions. Methods The whole spatial series of degradation successions were chosen in alpine grasslands characterized as seven typical communities. Patch numbers, and perimeter and cover of each patch were recorded using adjacent quadrats along transects in each type of the communities. Species abundance within each patch was measured. Important Findings Across seven grazing-induced degradation stages in the world's largest expanse of grassland, from dense ungrazed turf to bare black-soil crust, patch numbers and perimeters first increased as patch cover decreased. Numbers and perimeters then decreased rapidly beyond an intersection point at 68% of initial continuous vegetation cover. Around this point, the vegetation fluctuated back and forth between the sedge-dominated grassland breaking-up phase and the forb-dominated phase, suggesting impending shift of grassland state. This study thus demonstrates how ground-based small-scale vegetation surveys can provide a quantitative, easy-to-use signals for vegetation degradation, with promise for detecting the catastrophic transition to desertification.
资助项目	Second Tibetan Plateau Scientific Expedition and Research (STEP)[2019QZKK0302] ; National Key Research and Development Program[2016YFC0501802] ; National Key Research and Development Program[2016YFC0501803] ; National Natural Science Foundation of China[41671263] ; National Natural Science Foundation of China[41730752]
WOS关键词	SPATIAL-PATTERNS ; CATASTROPHIC SHIFTS ; SEED DISTRIBUTION ; TIBETAN PLATEAU ; VEGETATION ; DESERTIFICATION ; FACILITATION ; DYNAMICS ; ORGANIZATION ; TRANSITIONS
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000593099700005
资助机构	Second Tibetan Plateau Scientific Expedition and Research (STEP) ; National Key Research and Development Program ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156453]
专题	中国科学院地理科学与资源研究所
通讯作者	Song, Ming-Hua; Li, Yi-Kang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Area Qinghai Prov, Xining 810008, Peoples R China 3.Vrije Univ Amsterdam, Fac Earth & Life Sci, Dept Ecol Sci, Syst Ecol, Boelelaan 1085, NL-1081 HV Amsterdam, Netherlands 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 5.Shanghai Chenshan Bot Garden, Shanghai Key Lab Plant Funct Genom & Res, Plant Sci Res Ctr, Shanghai 201602, Peoples R China 6.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Song, Ming-Hua,Cornelissen, Johannes H. C.,Li, Yi-Kang,et al. Small-scale switch in cover-perimeter relationships of patches indicates shift of dominant species during grassland degradation[J]. JOURNAL OF PLANT ECOLOGY,2020,13(6):704-712.
APA	Song, Ming-Hua.,Cornelissen, Johannes H. C..,Li, Yi-Kang.,Xu, Xing-Liang.,Zhou, Hua-Kun.,...&Feng, Qi.(2020).Small-scale switch in cover-perimeter relationships of patches indicates shift of dominant species during grassland degradation.JOURNAL OF PLANT ECOLOGY,13(6),704-712.
MLA	Song, Ming-Hua,et al."Small-scale switch in cover-perimeter relationships of patches indicates shift of dominant species during grassland degradation".JOURNAL OF PLANT ECOLOGY 13.6(2020):704-712.