文献类型：期刊文献

中文题名：乌兰布和沙漠中国沙棘果实成熟期茎干液流规律及其与环境因子的关系

英文题名：Stem sap flow dynamics of Hippophae rhamnoides L. subsp. sinensis Rousi in relation to environmental factors in Ulan Buh Desert during fruit stage

作者：黄雅茹[1,2] 辛智鸣[1,2] 罗红梅[1] 罗凤敏[1,2] 马迎宾[1,2] 葛根巴图[1,2] 李新乐[1,2] 孙非[1] 郝玉光[1,2]

第一作者：黄雅茹

机构：[1]中国林业科学研究院沙漠林业实验中心;[2]国家林业局内蒙古磴口荒漠生态系统定位研究站

年份：2015

卷号：34

期号：11

起止页码：3125-3131

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

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

基金：中央级公益性科研院所基本科研业务费专项(CAFYBB2012003);中国林业科学研究院沙漠林业实验中心创新研发基金项目"乌兰布和沙漠沙生灌木油蒿水分利用规律研究";国家自然科学基金项目(31200536)资助

语种：中文

中文关键词：液流;中国沙棘;气象因子;乌兰布和沙漠

外文关键词：sap flow; Hippophae rhamnoides L. subsp, sinensis Rousi ; environmental factors ;Ulan Buh Desert

分类号：Q948.1

摘要：利用TDP液流测量系统和自动气象站对乌兰布和沙漠中国沙棘（Hippophae rhamnoides L.subsp.sinensis Rousi）的液流变化及其环境因子进行观测。结果表明：沙棘的茎干液流速率呈“几”字宽峰曲线,昼夜变化明显,夜间仍有低值液流;液流启动时间为8：00,在10：00左右达到峰值,峰值大小为227.94～307.86 g·h-1,至21：30基本下降到了极低值（11.04～26.29 g·h-1）。沙棘液流速率变化趋势与环境因子变化趋势相吻合。晴天液流速率较大,变化幅度也大,变幅在300 g·h-1以上;阴雨天液流速率变化小。相关性分析表明,影响沙棘液流速率的主要因子为太阳总辐射、空气相对湿度、空气温度以及风速。另外,沙棘液流与蒸腾速率日变化曲线均为单峰曲线,但叶片蒸腾速率峰值出现时间滞后液流峰值出现时间3 h。
In this study, Dynamax sap flow measuring system and automatic meteorological sta- tion were used to estimate stem sap flow of Hippophae rhamnoides L. subsp, sinensis Rousi and its relationships with environmental factors during fruit stage in Ulan Buh Desert. The results showed that the stem sap flow of H. rthamnoides fluctuated significantly, with a single-peak curve from day to night. The sap flow started at 8：00. The peak value of the sap flow appeared at about 10：00, being 227.94-307.86 g · h-1. The minimum value of the sap flow appeared at about 21：30, being 11.04-26.29 g · h-1. The sap flow was closely related to environmental factors. The sap flow rate and variation on clear days were generally higher than on cloudy and rainy days. Total radiation, air relative humidity, air temperature and wind speed were the major factors af- fecting the stem sap flow rate of H. rthamnoides. Moreover, the diurnal variation characteristics of transpiration rate was similar to the sap flow rate, but the peak value of the transpiration rate lagged about 3 hours compared to that of the sap flow.