干旱区生态环境知识资源中心(Arid): Modifying connectivity to promote state change reversal: the importance of geomorphic context and plant-soil feedbacks

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DOI	10.1002/ecy.3069
	Modifying connectivity to promote state change reversal: the importance of geomorphic context and plant-soil feedbacks
	Peters, Debra P. C.; Okin, Gregory S.; Herrick, Jeffrey E.; Savoy, Heather M.; Anderson, John P.; Scroggs, Stacey L. P.; Zhang, Junzhe
通讯作者	Peters, DPC
来源期刊	ECOLOGY
ISSN	0012-9658
EISSN	1939-9170
出版年	2020
卷号	101 期号:9
英文摘要	Alternative states maintained by feedbacks are notoriously difficult, if not impossible, to reverse. Although positive interactions that modify soil conditions may have the greatest potential to alter self-reinforcing feedbacks, the conditions leading to these state change reversals have not been resolved. In a 9-yr study, we modified horizontal connectivity of resources by wind or water on different geomorphic surfaces in an attempt to alter plant-soil feedbacks and shift woody-plant-dominated states back toward perennial grass dominance. Modifying connectivity resulted in an increase in litter cover regardless of the vector of transport (wind, water) followed by an increase in perennial grass cover 2 yr later. Modifying connectivity was most effective on sandy soils where wind is the dominant vector, and least effective on gravelly soils on stable surfaces with low sediment movement by water. We found that grass cover was related to precipitation in the first 5 yr of our study, and plant-soil feedbacks developed following 6 yr of modified connectivity to overwhelm effects of precipitation on sandy, wind-blown soils. These feedbacks persisted through time under variable annual rainfall. On alluvial soils, either plant-soil feedbacks developed after 7 yr that were not persistent (active soils) or did not develop (stable soils). This novel approach has application to drylands globally where desertified lands have suffered losses in ecosystem services, and to other ecosystems where connectivity-mediated feedbacks modified at fine scales can be expected to impact plant recovery and state change reversals at larger scales, in particular for wind-impacted sites.
英文关键词	aeolian processes alternative states cusp-catastrophe model desertification ecohydrology long-term studies regime shifts remediation
类型	Article
语种	英语
开放获取类型	Other Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000546679700001
WOS关键词	NORTHERN CHIHUAHUAN DESERT ; CATASTROPHIC SHIFTS ; CLIMATE-CHANGE ; NEW-MEXICO ; DESERTIFICATION ; INDICATORS ; PATTERNS ; EROSION ; LAND
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	New Mexico State University ; University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324976
作者单位	[Peters, Debra P. C.; Herrick, Jeffrey E.; Savoy, Heather M.] ARS, USDA, Jornada Expt Range Unit, Las Cruces, NM 88003 USA; [Peters, Debra P. C.; Okin, Gregory S.; Herrick, Jeffrey E.; Savoy, Heather M.; Anderson, John P.; Scroggs, Stacey L. P.; Zhang, Junzhe] New Mexico State Univ, Jornada Basin Long Term Ecol Res Program, Las Cruces, NM 88003 USA; [Okin, Gregory S.; Zhang, Junzhe] Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90095 USA; [Anderson, John P.] New Mexico State Univ, Jornada Expt Range Dept, Las Cruces, NM 88003 USA; [Scroggs, Stacey L. P.] New Mexico State Univ, Dept Biol, Las Cruces, NM 88003 USA
推荐引用方式 GB/T 7714	Peters, Debra P. C.,Okin, Gregory S.,Herrick, Jeffrey E.,et al. Modifying connectivity to promote state change reversal: the importance of geomorphic context and plant-soil feedbacks[J]. New Mexico State University, University of California, Los Angeles,2020,101(9).
APA	Peters, Debra P. C..,Okin, Gregory S..,Herrick, Jeffrey E..,Savoy, Heather M..,Anderson, John P..,...&Zhang, Junzhe.(2020).Modifying connectivity to promote state change reversal: the importance of geomorphic context and plant-soil feedbacks.ECOLOGY,101(9).
MLA	Peters, Debra P. C.,et al."Modifying connectivity to promote state change reversal: the importance of geomorphic context and plant-soil feedbacks".ECOLOGY 101.9(2020).