文献类型：期刊文献

中文题名：沙棘液流动态变化及影响因素分析

英文题名：Sap flow dynamic variations of Hippophae rhamnoides and its response of meteorological factors

作者：罗凤敏[1] 辛智鸣[1] 高君亮[1] 黄雅茹[1] 葛根巴图[1] 李新乐[1] 郝玉光[1]

第一作者：罗凤敏

机构：[1]国家林业局内蒙古磴口荒漠生态系统定位观测研究站/中国林业科学研究院沙漠林业实验中心

年份：2015

卷号：32

期号：11

起止页码：1871-1877

中文期刊名：草业科学

外文期刊名：Pratacultural Science

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家自然科学基金"白刺叶形态变化对水分利用的优化调控"(31200536);国家林业局防沙治沙专题"乌兰布和沙漠东北部荒漠化定位监测"

语种：中文

中文关键词：液流速率;沙棘;气象因子;乌兰布和沙漠

外文关键词：sap flow velocity; Hippophae rthamnoides; meteorological factors; Ulan Buh Desert

分类号：Q948.1

摘要：利用TDP茎流测量系统和自动气象站对乌兰布和沙漠的沙棘（Hippophae rhamnoides）液流动态变化及环境因子进行了监测。结果表明,1）沙棘茎干液流速率呈多峰曲线;液流启动时间为07：50,09：10左右达到峰值,峰值大小为292.07-340.27 g·h-1;夜间有明显的液流活动。2）沙棘茎干液流与其基径相关,基径10.5、8.3和7.5cm的沙棘日累计液流量分别为16 593.26、14 907.08和14 101.83 g。3）沙棘白天液流动态变化规律与环境因子变化规律相似。相关分析与逐步回归表明,对沙棘植株茎干液流速率起决定作用的环境因子为太阳总辐射、空气相对湿度、气温、风速和10 cm处土温。
In the present study,the sap flow of Hippophae rhamnoides and meteorological factors were measured in the Ulan Buh desertby using the TDP sap flow testing system and automatic meteorological station. The results showed that the daily variation curve of sap flow velocity in H. rhamnoides stem was in a multimodal distribution.The sap flow started at 07： 50 and reached the maximum value around 09： 10 which varied in a range of 292. 07 -340. 27 g·h- 1. The sap still flowed at night. The sap flow velocity in H. rhamnoides stem correlated with diameter and its daily accumulated sap flow amounts of diameter with 10. 5,8. 3 and 7. 5 cm was 16 593. 26,14 907. 08 and14 101. 83 g,respectively. The change law of sap flow velocity was similar with that of environmental factors. The correlation analysis results revealed that the environmental factors affecting the variation of sap flow in H. rhamnoides were air relative humidity,air temperature,effective solar radiation,soil temperature in the depth of 10 cm and wind speed.