Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2010.10.013 |
Grazing as a driver for Populus euphratica woodland degradation in the semi-arid Aibi Hu region, northwestern China | |
Saeumel, I.1; Ziche, D.3; Yu, R.2; Kowarik, I.1; Overdieck, D.1 | |
通讯作者 | Saeumel, I. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
出版年 | 2011 |
卷号 | 75期号:3页码:265-269 |
英文摘要 | The endangered river plain woodlands of semi-arid Central Asia provide numerous ecosystem services. Previous studies have focused mainly on changes in water supply and salinity as the underlying mechanisms of Populus euphratica woodland’s decline. We tested whether vegetative regeneration of P euphratica serves as an alternative pathway to propagation from seeds for reproduction in a degraded tree steppe in northwestern China and whether this method also works on grazed sites. We measured the effects of different grazing pressures on tree growth, survival, and vegetative regeneration. When subjected to high or moderate grazing pressure, P. euphratica populations failed to regenerate vegetatively, indicating recruitment limitation. A 25% increase of grazing pressure decreased the ramet density to 50% and the ramet height to 25%, as well as reducing the average age of ramets to one year. As overgrazing seriously limits the potential of natural recovery of P. euphratica a balance between livestock grazing and the regeneration of the Tugai forests is needed to sustain positive effects of increasing water tables and floods on tree vitality and regeneration. To restore population structure, and to support early vegetative regeneration long-term livestock management interventions to exclude livestock from degraded and recovered land need to be developed. (C) 2010 Elsevier Ltd. All rights reserved. |
英文关键词 | Desertification Euphrates poplar Grazing pressure Recruitment limitation Vegetative regeneration |
类型 | Article |
语种 | 英语 |
国家 | Germany ; Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000286847100005 |
WOS关键词 | TARIM RIVER ; TAKLAMAKAN DESERT ; LOWER REACHES ; WATER-TABLE ; NORTH CHINA ; NW CHINA ; VEGETATION ; DESERTIFICATION ; ECOSYSTEMS ; XINJIANG |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/168861 |
作者单位 | 1.Tech Univ Berlin, Dept Ecol, D-12165 Berlin, Germany; 2.China Meteorol Adm, Inst Desert Meteorol, Urumqi 830002, Xinjiang, Peoples R China; 3.Johann Heinrich von Thunen Fed Res Inst Rural Are, Inst Forest Ecol & Forest Inventory, D-16225 Eberswalde, Germany |
推荐引用方式 GB/T 7714 | Saeumel, I.,Ziche, D.,Yu, R.,et al. Grazing as a driver for Populus euphratica woodland degradation in the semi-arid Aibi Hu region, northwestern China[J],2011,75(3):265-269. |
APA | Saeumel, I.,Ziche, D.,Yu, R.,Kowarik, I.,&Overdieck, D..(2011).Grazing as a driver for Populus euphratica woodland degradation in the semi-arid Aibi Hu region, northwestern China.JOURNAL OF ARID ENVIRONMENTS,75(3),265-269. |
MLA | Saeumel, I.,et al."Grazing as a driver for Populus euphratica woodland degradation in the semi-arid Aibi Hu region, northwestern China".JOURNAL OF ARID ENVIRONMENTS 75.3(2011):265-269. |
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