西南林业大学学报2023，Vol.43Issue(11)：54-64,11.DOI:10.11929/j.swfu.202205036
不同天气条件下山杏树干液流速率对环境因子变化的响应
Responses of Trunk Sap Flow of Armeniaca sibirica to Varied Environmental Factors in Different Weather Conditions
摘要
Abstract
The sap flow rate of Armeniaca sibirica,environmental factors including meteorological factors,soil moisture,and soil temperature were monitored simultaneously in the growing season of 2019 in a loess hilly area of Ningxia.The relationships between the sap flow rate and environmental factors were analyzed under dif-ferent weather conditions,and the contributions of each main environmental factor to the sap flow variation were quantified separately.The results showed that in sunny days,solar radiation was the greatest conctributor to the sap flow variation(80.8％),then were the saturation vapor pressure deficit(2.7％)and wind speed(1.4％).In cloudy days,solar radiation,air temperature and soil temperature contributed 44.9％,9.3％and 13.7％to the sap flow var-ation respectively.In rainy days,the contribution of solar radiation was 60.4％,and the saturation vapor pressure deficit was 4.7％.From sunny,cloudy,to rainy days,the total contribution of environmental factors to the sap flow variatoin decreased in turn,the correlation between sap flow rate and air relative humidity and saturation va-por pressure deficit gradually increased,and the correlation between sap flow rate and air temperature,soil mois-ture and soil temperature gradually decreased.Under the 3 weather conditions,solar radiation was the main met-eorological factor controlling the sap flow variation,then were the saturation vapor pressure deficit,air temperat-ure,soil temperature,and wind speed.The results provide a theoretical basis for a detailed characterization of ve-getation transpiration response to environmental factors and a better understanding of relevant driving mechanisms.关键词
树干液流/环境因子/天气条件/山杏Key words
stem sap flow/environmental factor/weather condition/Armeniaca sibirica分类
农业科技引用本文复制引用
韩新生,许浩,安钰,郭永忠,董立国,王月玲,万海霞,蔡进军..不同天气条件下山杏树干液流速率对环境因子变化的响应[J].西南林业大学学报,2023,43(11):54-64,11.基金项目
宁夏农业高质量发展和生态保护科技创新示范课题(NGSB-2021-14-01,NGSB-2021-14-02,NGSB-2021-11-06)资助 （NGSB-2021-14-01,NGSB-2021-14-02,NGSB-2021-11-06）
宁夏重点研发计划(2021BEG03017,2020BCF01001)资助 （2021BEG03017,2020BCF01001）
IWHR基本科研业务费专项(SC0145B012021)资助 （SC0145B012021）
宁夏自然科学基金项目(2019AAC03148)资助 （2019AAC03148）
宁夏"青年科技人才托举工程"项目"宁南山区山杏树干液流密度及蒸腾量研究"资助. （）
