| Literature DB >> 14975915 |
Abstract
Transpiration of a Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stand was evaluated by sap flow measurements during a 4-month period. Between-tree variation in sap flow depended on crown class. On a sunny day, total transpiration was 1.6, 8.0 and 22.0 liters day(-1) for suppressed, codominant and dominant trees, respectively. Transpiration estimated by sap flow fell below potential evapotranspiration when available soil water decreased below 30% of its maximum value. Sap flow measurements gave transpiration values similar to those obtained by the water balance method.Entities:
Year: 1987 PMID: 14975915 DOI: 10.1093/treephys/3.4.309
Source DB: PubMed Journal: Tree Physiol ISSN: 0829-318X Impact factor: 4.196