Arid
DOI10.2111/REM-D-11-00007.1
Density-Dependent Ecohydrological Effects of Pinon-Juniper Woody Canopy Cover on Soil Microclimate and Potential Soil Evaporation
Royer, Patrick D.2,3; Breshears, David D.1,4; Zou, Chris B.5; Villegas, Juan Camilo6; Cobb, Neil S.7,8; Kurc, Shirley A.1,9
通讯作者Breshears, David D.
来源期刊RANGELAND ECOLOGY & MANAGEMENT
ISSN1550-7424
出版年2012
卷号65期号:1页码:11-20
英文摘要

Many rangeland processes are driven by microclimate and associated ecohydrological dynamics. Most rangelands occur in drylands where evapotranspiration normally dominates the water budget. In these water-limited environments plants can influence abiotic and biotic processes by modifying microclimate factors such as soil temperature and potential soil evaporation. Previous studies have assessed spatial variation in microclimate and associated ecohydrological attributes within an ecosystem (e.g., under vs. between woody canopies) or across ecosystems (e.g., with differing amounts of woody canopy cover), but generally lacking are assessments accounting systematically for both, particularly for evergreen woody plants. Building on recently quantified trends in near-ground solar radiation associated with a pinon juniper gradient spanning 5% to 65% woody canopy cover, we evaluated trends in soil temperature and associated estimates of potential soil evaporation as a function of amount of woody canopy cover for sites overall and for associated canopy vs. intercanopy locations. Quantified soil temperature trends decreased linearly with increasing woody canopy cover for intercanopy as well as canopy patches, indicating the coalescing influence of individual canopies on their neighboring areas. Notably, intercanopy locations within high-density (65%) woody canopy cover could be as much as similar to 10 degrees C cooler than intercanopy locations within low-density (5%) cover. Corresponding potential soil evaporation rates in intercanopies within high-density woody canopy cover was less than half that for intercanopies within low density. Our results highlight ecohydrological consequences of density-dependent shading by evergreen woody plants on soil temperature and potential soil evaporation and enable managers to rapidly estimate and compare approximate site microclimates after assessing amounts of woody canopy cover. Such predictions of microclimate have general utility for improving management of rangelands because they are a fundamental driver of many key processes, whether related to understory forage and herbaceous species or to wildlife habitat quality for game or nongame species.


英文关键词intercanopy near-ground radiation pinon pine soil temperature
类型Article
语种英语
国家USA ; Colombia
收录类别SCI-E
WOS记录号WOS:000299604800002
WOS关键词GRASSLAND-FOREST CONTINUUM ; SEMIARID LANDSCAPES ; VEGETATION PATCHES ; SOLAR-RADIATION ; NEW-MEXICO ; DESERT ; EVAPOTRANSPIRATION ; HETEROGENEITY ; ARCHITECTURE ; TEMPERATURE
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构University of Arizona
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/174744
作者单位1.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA;
2.Columbia Basin Groundwater Management Area, Kennewick, WA 99336 USA;
3.No Arizona Univ, Geospatial Res & Inventory Lab, Flagstaff, AZ 86011 USA;
4.Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA;
5.Oklahoma State Univ, Dept Nat Resource Ecol & Management, Stillwater, OK 74078 USA;
6.Univ Antioquia, Sch Environm, Medellin, Colombia;
7.No Arizona Univ, Merriam Powell Ctr Environm Res, Flagstaff, AZ 86011 USA;
8.No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA;
9.Univ Arizona, Dept Soil Water & Environm, Tucson, AZ 85721 USA
推荐引用方式
GB/T 7714
Royer, Patrick D.,Breshears, David D.,Zou, Chris B.,et al. Density-Dependent Ecohydrological Effects of Pinon-Juniper Woody Canopy Cover on Soil Microclimate and Potential Soil Evaporation[J]. University of Arizona,2012,65(1):11-20.
APA Royer, Patrick D.,Breshears, David D.,Zou, Chris B.,Villegas, Juan Camilo,Cobb, Neil S.,&Kurc, Shirley A..(2012).Density-Dependent Ecohydrological Effects of Pinon-Juniper Woody Canopy Cover on Soil Microclimate and Potential Soil Evaporation.RANGELAND ECOLOGY & MANAGEMENT,65(1),11-20.
MLA Royer, Patrick D.,et al."Density-Dependent Ecohydrological Effects of Pinon-Juniper Woody Canopy Cover on Soil Microclimate and Potential Soil Evaporation".RANGELAND ECOLOGY & MANAGEMENT 65.1(2012):11-20.
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