| 黄土高原主要树种树干液流研究进展 |
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| 引用本文： | 刘潇潇,李国庆,闫美杰,杜盛.黄土高原主要树种树干液流研究进展[J].水土保持研究,2017(3):369-373. |
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| 作者姓名： | 刘潇潇 李国庆 闫美杰 杜盛 |
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| 作者单位： | 中国科学院水利部水土保持研究所,陕西杨凌712100;西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100 |
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| 基金项目： | 国家自然科学基金(41471440 |
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| 摘 要： | 为了明晰黄土高原主要树种树干液流的动态特征,该文通过对已发表相关文献搜集与整理(19篇涉及11个树种),采用meta分析手段归纳黄土高原主要树种树干液流动态、耗水规律及其影响因素。研究发现:(1)该区主要树种树干液流存在明显的昼夜变化规律;(2)太阳辐射、水汽压亏缺、土壤含水率是影响树干液流的主要环境因素;(3)树干液流测量手段、树木生长阶段以及测量时的天气条件会给树木蒸腾耗水估算带来不确定性;(4)11个树种的蒸腾耗水量大小的顺序为:针叶树种(侧柏、油松)乡土阔叶树种(白榆、辽东栎、旱柳、柠条、河北杨、小叶杨、山杏)外来阔叶树种(刺槐、苹果)。本研究为黄土高原地区造林树种的合理选择及树种耗水评价提供参考。
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| 关 键 词： | 黄土高原 树干液流 蒸腾耗水 人工造林 |
Research Progress on Stem Sap Flow in Major Tree Species on the Loess Plateau |
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| LIU Xiaoxiao,LI Guoqing,YAN Meijie,DU Sheng.Research Progress on Stem Sap Flow in Major Tree Species on the Loess Plateau[J].Research of Soil and Water Conservation,2017(3):369-373. |
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| Authors: | LIU Xiaoxiao LI Guoqing YAN Meijie DU Sheng |
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| Abstract: | To clarify the sap flow dynamic characteristics of main tree species on the Loess Plateau,we collected and arranged the relevant 19 published literatures with 11 tree species and a meta analysis was used to summarize the daily dynamics of stem sap flow,water consumption situation and their influence of environmental factors of the 11 tree species.The results suggested that:(1) stem sap flow of the main tree species exhibited diurnal patterns in this area;(2) solar radiation,vapor pressure deficit and soil moisture were the principal factors affecting stem sap flow;(3) estimate of tree water-consumption for transpiration always had uncertainty because of the difference in the methods of measurement,trees growing stage and the weather condition of the measurement;(4) the order of the transpiration in 11 tree species was as following:native coniferous species (Platycladus orientalis,P inus tabuli f ormis) ＜ native broadleaved species (Ulmus pumila,Quercus liaotungensis,Salix matsudana,Caragana korshinskii,Populus hopeiensis,Populus simonii,Armeniaca sibirica) ＜ exotic broadleaved species (Robinia pseudoacacia,Malus pumila).This study will provide the reference for selection of afforestation tree species and evaluation of tree water consumption on the Loess Plateau of China. |
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| Keywords: | Loess Plateau sap flow transpiration water use artificial afforestation |
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