Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0140-1963 |
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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