Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.catena.2007.08.005 |
Spatial patterns of ecohydrologic properties on a hillslope-alluvial fan transect, central New Mexico | |
Bedford, David R.1,2; Small, Eric E.2 | |
通讯作者 | Bedford, David R. |
来源期刊 | CATENA
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ISSN | 0341-8162 |
出版年 | 2008 |
卷号 | 73期号:1页码:34-48 |
英文摘要 | Spatial patterns of soil properties are linked to patchy vegetation in and and semi-arid landscapes. The patterns of soil properties are generally assumed to be linked to the ecohydrological functioning of patchy dryland vegetation ecosystems. We studied the effects of vegetation canopy, its spatial pattern, and landforms on soil properties affecting overland flow and infiltration in shrublands at the Sevilleta National Wildlife Refuge/LTER in central New Mexico, USA. We studied the patterns of microtopography and saturated conductivity (Ksat), and generally found it to be affected by vegetation canopy and pattern, as well as landform type. On gently sloping alluvial fans, both microtopography and Ksat are high under vegetation canopy and decay with distance from plant center. On steeper hillslope landforms, only microtopography was significantly higher under vegetation canopy, while there was no significant difference in Ksat between vegetation and interspaces. Using geostatistics, we found that the spatial pattern of soil proper-ties was determined by the spatial pattern of vegetation. Most importantly, the effects of vegetation were present in the unvegetated interspaces 2-4 times the extent of vegetation canopy, on the order of 2-3 m. Our results have implications for the understanding the ecohydrologic function of semi-arid ecosystems as well as the parameterization of hydrologic models. (C) 2007 Elsevier B.V. All rights reserved. |
英文关键词 | spatial patterns ecohydrology alluvial fans bajada hillslope vegetation soil properties |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000254829300004 |
WOS关键词 | SONORAN DESERT BAJADAS ; WEIGHTED LEAST-SQUARES ; VEGETATION PATTERNS ; SOIL PROPERTIES ; MULTIVARIATE GEOSTATISTICS ; INFILTRATION RATES ; CHIHUAHUAN DESERT ; SEMIARID WOODLAND ; SHRUB-STEPPE ; SINGLE-RING |
WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
WOS研究方向 | Geology ; Agriculture ; Water Resources |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/156793 |
作者单位 | 1.US Geol Survey, Menlo Pk, CA 94025 USA; 2.Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Bedford, David R.,Small, Eric E.. Spatial patterns of ecohydrologic properties on a hillslope-alluvial fan transect, central New Mexico[J]. United States Geological Survey,2008,73(1):34-48. |
APA | Bedford, David R.,&Small, Eric E..(2008).Spatial patterns of ecohydrologic properties on a hillslope-alluvial fan transect, central New Mexico.CATENA,73(1),34-48. |
MLA | Bedford, David R.,et al."Spatial patterns of ecohydrologic properties on a hillslope-alluvial fan transect, central New Mexico".CATENA 73.1(2008):34-48. |
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