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OALib Journal期刊
ISSN: 2333-9721
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苏南丘陵区麻栎林冠层水文效应及其影响因素
DOI: 10.3969/j.issn.1000-2006.2014.02.018, PP. 93-98
Keywords: 麻栎,穿透雨,树干径流,林冠截留,苏南丘陵区
Abstract:
为探讨苏南丘陵区麻栎林生态水文过程及其影响因素,采用定位观测的方法,于2012年4月至9月对麻栎林的降雨分配过程进行了监测研究。结果表明:研究期内,累计降雨量470.7mm,平均场降雨量10.0mm,小雨占据降雨事件的绝大部分,频率达到70.21%。穿透雨量、树干径流量、林冠截留量与降雨量呈极显著正相关关系。根据回归模型确定了林冠部分的持水能力和树干持水能力分别为0.87mm和0.11mm,形成树干径流的最小雨量为3.42mm。林冠截留率与降雨量、降雨强度以及空气湿度有显著的负相关关系。小雨量级下,随月平均叶面积指数的增加各月林冠截留率增大。月平均林冠截留率与叶面积指数有极显著的线性关系。林冠平均截留率为20.48%。
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