气候变化领域集成服务门户(CCPortal): Biological feedbacks in global desertification

CCPortal

DOI	10.1126/science.247.4946.1043
	Biological feedbacks in global desertification
	Schlesinger W.H.; Reynolds J.F.; Cunningham G.L.; Huenneke L.F.; Jarrell W.M.; Virginia R.A.; Whitford W.G.
发表日期	1990
ISSN	0036-8075
起始页码	1043
结束页码	1048
卷号	247 期号:4946
英文摘要	Studies of ecosystem processes on the Jornada Experimental Range in southern New Mexico suggest that long-term grazing of semiarid grasslands leads to an increase in the spatial and temporal heterogeneity of water, nitrogen, and other soil resources. Heterogeneity of soil resources promotes invasion by desert shrubs, which leads to a further localization of soil resources under shrub canopies. In the barren area between shrubs, soil fertility is lost by erosion and gaseous emissions. This positive feedback leads to the desertification of formerly productive land in southern New Mexico and in other regions, such as the Sahel. Future desertification is likely to be exacerbated by global climate warming and to cause significant changes in global biogeochemical cycles.
英文关键词	desertification; grassland; greenhouse effect; semi-arid; USA, New Mexico, Jornada Experimental Range
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245373
作者单位	Department of Botany, Duke University, Durham, NC 27706, United States; Systems Ecology Research Group, San Diego State University, San Diego, CA 92182, United States; Department of Biology, New Mexico State University, Las Cruces, NM 88003, United States; Department of Environmental Science and Engineering, Oregon Graduate Institute of Science and Technology, Beaverton, OR 97006, United States
推荐引用方式 GB/T 7714	Schlesinger W.H.,Reynolds J.F.,Cunningham G.L.,et al. Biological feedbacks in global desertification[J],1990,247(4946).
APA	Schlesinger W.H..,Reynolds J.F..,Cunningham G.L..,Huenneke L.F..,Jarrell W.M..,...&Whitford W.G..(1990).Biological feedbacks in global desertification.Science,247(4946).
MLA	Schlesinger W.H.,et al."Biological feedbacks in global desertification".Science 247.4946(1990).