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Methods of Measuring Stand Evapotranspiration
Author(s): 
Pages: 85-91
Year: Issue:  3
Journal: JOURNAL OF BEIJING FORESTRY UNIVERSITY

Keyword:  林分蒸散森林耗水量测定方法;
Abstract: 该文介绍了测定林分蒸散耗水量的方法, 对主要测定方法的原理、特点和适用范围进行了分析. 比较蒸散的测定方法,水文法适用性较强,它不受时间、气象条件、林分条件的限制, 可用于一周以上较长时段的总蒸散量测定,还可测定各种林分、流域的蒸散耗水量;微气象法适用林相整齐均一的林分,可对林分或区域森林蒸散进行测定;植物生理法可测定树种个体耗水量;蒸发器适用测定树木个体蒸散及林地土壤蒸发量,条件易于控制,测量精度高;气候学方法适用估算一个地区潜在蒸散量和相对耗水量;遥感方法可用来估算区域森林蒸散量.
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