Arid
DOI10.1016/j.jaridenv.2008.05.012
Modeling the effects of historical vegetation change on near-surface atmosphere in the northern Chihuahuan Desert
Beltran-Przekurat, Adriana1; Pielke, Roger A., Sr.1; Peters, Debra P. C.2; Snyder, Keirith A.2; Rango, Albert2
通讯作者Beltran-Przekurat, Adriana
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
出版年2008
卷号72期号:10页码:1897-1910
英文摘要

Our goal was to evaluate effects of broad-scale changes in vegetation from grasslands to shrublands over the past 150 years on near-surface atmosphere over the Jornada Experimental Range in the northern Chihuahuan Desert, using a regional climate model. Simulations were conducted using 1858 and 1998 vegetation maps, and data collected in the field. Overall, the vegetation shift led to small changes in sensible heat (SH) and an increase in latent heat (LH). The impacts of shrub encroachment depended on shrubland type: conversion from grass to mesquite cools the near-surface atmosphere and from grass to creosotebush warms it. Higher albedo of mesquite relative to grasses reduced available energy, which was dissipated mainly as LH due to the deeper root system in mesquite. in creosotebush-dominated areas, a decrease in albedo, an increase in roughness length and displacement height contributed to the SH increase and warmer temperatures. Sensitivity simulations showed that an increase in soil moisture content enhanced shrub LH and a reduction in mesquite cover enhanced the temperature differences. The observed shift in vegetation led to complex interactions between land and surface fluxes, demonstrating that vegetation itself is a weather and climate variable as it significantly influences temperature and humidity. (c) 2008 Elsevier Ltd. All rights reserved.


英文关键词atmosphere-biosphere interactions energy fluxes Jornada Experimental Range land-atmosphere interactions regional climate modeling simulations semiarid areas surface fluxes vegetation changes
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000259001300014
WOS关键词SOIL-MOISTURE ; TERRESTRIAL ECOSYSTEMS ; PLANT-COMMUNITIES ; NEW-MEXICO ; HEAT-FLUX ; CLIMATE ; DESERTIFICATION ; DYNAMICS ; ALBEDO ; ESTABLISHMENT
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构New Mexico State University ; Colorado State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/157990
作者单位1.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA;
2.New Mexico State Univ, USDA, Agr Res Serv, Las Cruces, NM 88003 USA
推荐引用方式
GB/T 7714
Beltran-Przekurat, Adriana,Pielke, Roger A., Sr.,Peters, Debra P. C.,et al. Modeling the effects of historical vegetation change on near-surface atmosphere in the northern Chihuahuan Desert[J]. New Mexico State University, Colorado State University,2008,72(10):1897-1910.
APA Beltran-Przekurat, Adriana,Pielke, Roger A., Sr.,Peters, Debra P. C.,Snyder, Keirith A.,&Rango, Albert.(2008).Modeling the effects of historical vegetation change on near-surface atmosphere in the northern Chihuahuan Desert.JOURNAL OF ARID ENVIRONMENTS,72(10),1897-1910.
MLA Beltran-Przekurat, Adriana,et al."Modeling the effects of historical vegetation change on near-surface atmosphere in the northern Chihuahuan Desert".JOURNAL OF ARID ENVIRONMENTS 72.10(2008):1897-1910.
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