Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ldr.2469 |
SMALL-SCALE GEODIVERSITY REGULATES FUNCTIONING, CONNECTIVITY, AND PRODUCTIVITY OF SHRUBBY, SEMI-ARID RANGELANDS | |
Stavi, Ilan1; Rachmilevitch, Shimon2; Yizhaq, Hezi1,3 | |
通讯作者 | Stavi, Ilan |
来源期刊 | LAND DEGRADATION & DEVELOPMENT
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ISSN | 1085-3278 |
EISSN | 1099-145X |
出版年 | 2018 |
卷号 | 29期号:2页码:205-209 |
英文摘要 | Geodiversity has recently been attracting increasing attention as a measure of diversity for the physical components of natural environments. It has shown positive relations with biodiversity, as well as with several ecosystem services. Yet, so far, geodiversity studies have focused on relatively large spatial scales, ranging between hillslope, basin, and landform scales. It is proposed that either natural-induced or anthropogenic-induced, small-scale (centimeter-scale to few decimeter-scale) geodiversity has a large impact on the hydrological connectivity and overall functioning of semi-arid rangelands and other shrubby and woody drylands. It is further proposed that greater small-scale geodiversity increases the on-site retention of water and soil resources, decreasing the vulnerability of rangelands to prolonged droughts and climatic changes. Particularly, positive impact of moderate grazing intensity on rangelands functioning is demonstrated by the formation of livestock trampling routes, which transect hillslopes, increase ecosystem geodiversity, and modify the spatial redistribution of scarce water and soil resources at the patch scale. Numerical simulations of a mathematical model for vegetation patterns in water-limited systems show that the trampling routes increase the survivability of vegetation patches under prolonged droughts. In practical terms, the concept of small-scale geodiversity is relevant for the determination, monitoring, and assessment of land degradation, as well as for restoration projects of eroded lands and degraded ecosystems. Copyright (c) 2015 John Wiley & Sons, Ltd. |
英文关键词 | environmental planning and management patchy vegetation cover source-sink ecosystems structural versus functional connectivity two versus three-phase mosaics |
类型 | Article |
语种 | 英语 |
国家 | Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000425100700002 |
WOS关键词 | ROCK FRAGMENT COVER ; SURFACE ; RUNOFF ; DEGRADATION ; ECOSYSTEMS ; PATTERNS ; EROSION |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
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/2XILL650/211467 |
作者单位 | 1.Dead Sea & Arava Sci Ctr, IL-88820 Yotvata, Israel; 2.Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, French Associates Inst Agr & Biotechnol Drylands, Sde Boqer Campus, IL-84990 Sede Boqer, Israel; 3.Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Dept Solar Energy & Environm Phys, Sde Boqer Campus, IL-84990 Sede Boqer, Israel |
推荐引用方式 GB/T 7714 | Stavi, Ilan,Rachmilevitch, Shimon,Yizhaq, Hezi. SMALL-SCALE GEODIVERSITY REGULATES FUNCTIONING, CONNECTIVITY, AND PRODUCTIVITY OF SHRUBBY, SEMI-ARID RANGELANDS[J]. Ben-Gurion University of the Negev,2018,29(2):205-209. |
APA | Stavi, Ilan,Rachmilevitch, Shimon,&Yizhaq, Hezi.(2018).SMALL-SCALE GEODIVERSITY REGULATES FUNCTIONING, CONNECTIVITY, AND PRODUCTIVITY OF SHRUBBY, SEMI-ARID RANGELANDS.LAND DEGRADATION & DEVELOPMENT,29(2),205-209. |
MLA | Stavi, Ilan,et al."SMALL-SCALE GEODIVERSITY REGULATES FUNCTIONING, CONNECTIVITY, AND PRODUCTIVITY OF SHRUBBY, SEMI-ARID RANGELANDS".LAND DEGRADATION & DEVELOPMENT 29.2(2018):205-209. |
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