Age structure and growth of degraded Populus euphratica floodplain forests in north-west China and perspectives for their recovery.
Identifieur interne : 003999 ( Main/Exploration ); précédent : 003998; suivant : 003A00Age structure and growth of degraded Populus euphratica floodplain forests in north-west China and perspectives for their recovery.
Auteurs : Janneke Westermann [Allemagne] ; Stefan Zerbe ; Dieter EcksteinSource :
- Journal of integrative plant biology [ 1744-7909 ] ; 2008.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Arbres, Populus.
- Catastrophes, Chine, Conservation des ressources naturelles, Facteurs temps, Géographie, Rivières.
- Wicri :
- geographic : République populaire de Chine.
English descriptors
- KwdEn :
- MESH :
- geographic : China.
- growth & development : Populus, Trees.
- Conservation of Natural Resources, Disasters, Geography, Rivers, Time Factors.
Abstract
The Populus euphratica floodplain forests along the lower reaches of the Tarim River in continental-arid Xinjiang (north-west China) have been declining in recent decades as a result of dam constructions and the withdrawal of water from the river. Since 2000, controlled flooding has been carried out to counteract this process of degradation. However, the consequences of a changing water regime for the floodplain ecosystem are not yet sufficiently investigated. In 2004 we sampled a total of 150 P. euphratica trees along two transects at the middle and lower reaches of the Tarim River to compare the age structure and growth of these two tree populations. The anthropogenic drawdown of the groundwater table had no effect on the average growth of the trees at the lower reaches. However, tree growth abruptly increased after controlled flooding, thus showing distinct signs of recovery.
DOI: 10.1111/j.1744-7909.2007.00626.x
PubMed: 18713421
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Since 2000, controlled flooding has been carried out to counteract this process of degradation. However, the consequences of a changing water regime for the floodplain ecosystem are not yet sufficiently investigated. In 2004 we sampled a total of 150 P. euphratica trees along two transects at the middle and lower reaches of the Tarim River to compare the age structure and growth of these two tree populations. The anthropogenic drawdown of the groundwater table had no effect on the average growth of the trees at the lower reaches. 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Since 2000, controlled flooding has been carried out to counteract this process of degradation. However, the consequences of a changing water regime for the floodplain ecosystem are not yet sufficiently investigated. In 2004 we sampled a total of 150 P. euphratica trees along two transects at the middle and lower reaches of the Tarim River to compare the age structure and growth of these two tree populations. The anthropogenic drawdown of the groundwater table had no effect on the average growth of the trees at the lower reaches. 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