林业科技开发Issue(5)：41-44,4.DOI:10.13360/j.issn.1000-8101.2014.05.009
不同方法测定三倍体毛白杨整树蒸腾的比较
Comparison on the whole-tree water use of hybrid triploid of Chinese white poplar between the whole tree potometer and thermal dissipation probe
摘要
Abstract
To understand the accuracy of thermal dissipation method in measuring the whole tree water use,a comparison was made in hybrid triploid of Chinese white poplar plantation. The sap flow density of hyrid triploid of Chinese poplar was measured with thermal dissipation probe(TDP),which was compared with the whole tree potometer measurement. The diurnal variation of sap flow density(Fs )measured by TDP and the whole tree transpiration rate(Tr )measured by the whole tree photometer was a similar“single peak type”. And there was significant linear relationships(R2 = 0. 955)between Fs and Tr . The average sap flux was 5. 58% lower than the daily average transpiration by the whole tree potometer. The ratio of nocturnal and daytime transpiration of hyrid triploid of Chinese poplar was 21. 24% and 31. 60% respectively by the TDP and the whole tree potometer. As a conclusion,the thermal dissipation method had high reliability in water use pattern study of triploid clones P. tomentosa.关键词
整树蒸腾/热扩散探针/整树容器法/三倍体毛白杨Key words
whole-tree water use/thermal dissipation probe/whole tree potometer/hyrid triploid of Chinese poplar引用本文复制引用
李广德,贾黎明,富丰珍..不同方法测定三倍体毛白杨整树蒸腾的比较[J].林业科技开发,2014,(5):41-44,4.基金项目
国家林业公益性行业科研专项经费重大项目（编号201004004）；北京林业大学“985”优势学科创新平台开放基金（编号000-1108003）。 （）
