干旱区研究2012，Vol.29Issue(1)：101-108,8.
准噶尔盆地南缘梭梭树干液流规律比较
Comparative Study on the Rule of Stem-sap Flow of Haloxylon ammodendron in the Southern Marginal Zone of Junggar Basin
摘要
Abstract
The trunk sap flow and soil moisture content of artificially-planted and natural Haloxylon ammodendron growing in the southern marginal zone of Junggar Basin,Xinjiang,China were measured with the SF-300 heat-pulse technique,and the data were analyzed and compared.An optimum regression equation between trunk sap flow velocity of artificially-planted Haloxylon ammodendron and meteorological factors was developed.The results show that the curve of daily cumulative trunk sap flow flux of artificially-planted Haloxylon ammodendron was S-shaped,and the correlation between daily cumulative trunk sap flow flux and soil moisture content was very remarkable;the curves of daily change of trunk sap flow velocity were mostly bimodal,the change of circadian rhythm was obvious,and the time lag to air temperature was for about one hour;water consumption of natural Haloxylon ammodendron was relatively stable,the curve of daily cumulative trunk sap flow flux of natural Haloxylon ammodendron was approximatively beeline-shaped,there was no correlation with soil moisture content,and the curves of daily change of trunk sap flow velocity were mostly in a multi-peak shape without obvious daily process.The average value of trunk sap flow flux of artificially-planted Haloxylon ammodendron was 0.240 L/（cm2·d） during the observation period,it was 1.5 times of that of natural Haloxylon ammodendron.After rainfall,the peak value of sap flow velocity of artificially-planted and natural Haloxylon ammodendron was moved up for 3 hours and 30 minutes respectively compared with that before rainfall.关键词
梭梭/树干液流/速率/气象因子/土壤水分/准噶尔盆地Key words
Haloxylon ammodendron/trunk sap flow velocity/meteorological factor/soil moisture content/Junggar Basin分类
农业科技引用本文复制引用
李妙伶,周宏飞,孙鹏飞..准噶尔盆地南缘梭梭树干液流规律比较[J].干旱区研究,2012,29(1):101-108,8.基金项目
“十一五”国家科技支撑计划项目 （）
国家重点基础研究发展计划（973）项目 （）
中国科学院知识创新工程项目（KZCX2-YW-JS306）资助 （）
