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自2000年实施的向塔里木河下游8次应急输水对以胡杨为主体的荒漠河岸林产生了一定的恢复作用。为了定量评估胡杨对人为输水的响应程度,采用“面”上宏观调查与“点”上典型研究相结合的方法,以塔里木河下游阿拉干断面设立的长期监测样地内的胡杨为研究对象,分析与研究了树高及其分布特征。结果表明:不同树高级的胡杨分布具有一定规律性;随着离河距离的增加,胡杨株数呈递减趋势;特别是在距河50 m范围内人为输水干扰对胡杨幼苗更新具有显著作用。
Since the implementation of eight emergency water deliveries to the lower reaches of the Tarim River since 2000, the restoration of the desert riparian forests consisting mainly of Populus euphratica has been restored. In order to quantitatively evaluate the response of Populus euphratica to artificial water delivery, the method of combining the macro-survey on “surface ” with the typical study on “point ” was used to analyze the response of Populus euphratica in Populus euphratica As the research object, the tree height and its distribution characteristics were analyzed and studied. The results showed that Populus euphratica distributes regularly with different tree species. Populus euphratica shows a decreasing trend with the increasing distance from the river. In particular, disturbance of Populus euphratica seedlings with water disturbance within 50 m from the river has a significant effect.