西南林业大学学报2016，Vol.36Issue(5)：39-44,6.DOI:10.11929/j.issn.2095-1914.2016.05.007
喀纳斯自然保护区2树种树干液流变化特征及其与气象因子的关系
Characteristic of Stem Sap Flow of Two Tree Species and Analysis with Meteorological Factors in Kanas National Nature Reserve
摘要
Abstract
Stem sap flow velocities of Larix sibirica and Betula pendula were measured by using thermal dissi-pation probe method on sunny side and shade side. At the same time, the correlation between meteorological factors and the stem sap flow of two tree species was analyzed according to the related environmental factors that include photosynthetically active radiation (PAR), air temperature (T), ralative air humidity (RH), saturation vapour pressure and wind velocity were recorded continuously by using automatic weather station. The results were as fol-lows:the diurnal variation of stem sap flow on Larix sibirica and Betula pendula displayed a typical single-peaked curve in the sunny side and the shade side, the sunny side was higher than that of the shade side. The variation range of Larix sibirica was higher than Betula pendula. During the growing season, the monthly average of stem sap flow for Larix sibirica showed decrease tendency with its maximum appearing in June and minimum in September. The monthly average of stem sap flow for Betula pendula on the sunny side was firstly increased and then decreased, with its maximum appearing in August and minimum in June. The monthly average of stem sap flow for Betula pen-dula on the shade side showed increase tendency, with its maximum appearing in September and minimum in June.Correlation coefficients declined following the order of air temperature, PAR, RH, wind velocity and saturation vapour pressure. That is, sap flow of the two species were mainly affected by air temperature and photosynthetically active radiation.关键词
西伯利亚落叶松/疣枝桦/热扩散/树干液流/气象因子/自然保护区Key words
Larix sibirica/Betula pendula/thermal dissipation probe/stem sap flow/meteorological factors/nature reserve分类
农业科技引用本文复制引用
刘端,阿里木·买买提,白志强,王文栋..喀纳斯自然保护区2树种树干液流变化特征及其与气象因子的关系[J].西南林业大学学报,2016,36(5):39-44,6.基金项目
2013年新疆财政林业科技专项(xjlk2013[001])资助。 （xjlk2013[001]）
