Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/eco.21 |
Shrubs enhance resilience of a semi-arid ecosystem by engineering and regrowth | |
Segoli, Moran1; Ungar, Eugene David2; Shachak, Moshe1 | |
通讯作者 | Segoli, Moran |
来源期刊 | ECOHYDROLOGY
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ISSN | 1936-0584 |
EISSN | 1936-0592 |
出版年 | 2008 |
卷号 | 1期号:4页码:330-339 |
英文摘要 | Semi-arid ecosystems in the Mediterranean basin show a high degree of resilience. despite thousands of years of human disturbance. It has been suggested that this resilience is facilitated by a landscape structure that consists of woody vegetation and intershrub patches of crusted soil. We hypothesized that the woody vegetation patches have two main properties that increase the resilience of the ecosystem. The first property is the capability to accumulate water, and we hypothesized that this continues to function after anthropogenic disturbances to the shrubs. This was field-tested with a rainfall simulator by comparing the amounts of runoff and soil erosion generated by crusted intershrub patches, intact shrub patches and disurbed shrub patches. The second property is the ability of the woody vegetation to recover after disturbances. This was tested by measuring the recovery rate of the woody vegetation. during 2 consecutive years after canopy removal. Intact and disturbed shrub patches generated similar amounts of runoff and soil erosion to one another, and much lower than crusted intershrub patches, and both kinds of shrub patches had deeper water infiltration. These results suggest that the accumulation of water under the shrub is due to Surface and sub-surface Soil properties, and not canopy properties. After anthropogenic removal of the woody vegetation canopy. most of the individuals regrew. These combined results suggest that the ecosystem can remain resilient to certain anthropogenic disturbances by virtue of ecosystem engineering and fast recovery by woody vegetation patches that act to conserve resources and to impede their leakage from the ecosystem. Copyright (C) 2008 John Wiley & Sons, Ltd. |
英文关键词 | resilience ecosystem engineering runoff infiltration woody vegetation disturbance |
类型 | Article |
语种 | 英语 |
国家 | Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000262150500005 |
WOS关键词 | VEGETATION PATTERNS ; MEDITERRANEAN RANGELANDS ; ECOLOGICAL-SYSTEMS ; BANDED VEGETATION ; PLANT-COMMUNITIES ; DWARF-SHRUB ; SOIL ; DESERT ; MANAGEMENT ; LANDSCAPE |
WOS类目 | Ecology ; Environmental Sciences ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
来源机构 | Ben-Gurion University of the Negev |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/157033 |
作者单位 | 1.Ben Gurion Univ Negev, BIDR, Mitrani Dept Desert Ecol, IL-84990 Sede Boqer, Israel; 2.Agr Res Org, Volcani Ctr, Inst Plant Sci, Dept Agron & Nat Resources, IL-50250 Bet Dagan, Israel |
推荐引用方式 GB/T 7714 | Segoli, Moran,Ungar, Eugene David,Shachak, Moshe. Shrubs enhance resilience of a semi-arid ecosystem by engineering and regrowth[J]. Ben-Gurion University of the Negev,2008,1(4):330-339. |
APA | Segoli, Moran,Ungar, Eugene David,&Shachak, Moshe.(2008).Shrubs enhance resilience of a semi-arid ecosystem by engineering and regrowth.ECOHYDROLOGY,1(4),330-339. |
MLA | Segoli, Moran,et al."Shrubs enhance resilience of a semi-arid ecosystem by engineering and regrowth".ECOHYDROLOGY 1.4(2008):330-339. |
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