文献类型：期刊文献

中文题名：环境要素对樟子松人工林蒸散的影响

英文题名：Effects of environmental factors on evapotranspiration in a Pinus sylvestris var.mongolica plantation

作者：高翔[1,2] 蔡金峰[2] 裴松义[3] 黄辉[1,4] 张劲松[1,2]

第一作者：高翔

机构：[1]中国林业科学研究院林业研究所国家林草局林木培育重点实验室,北京100091;[2]南京林业大学南方现代林业协同创新中心,江苏南京210037;[3]国有建平县黑水机械化林场,辽宁朝阳122000;[4]河南小浪底森林生态系统国家野外科学观测研究站,河南济源454650

年份：2025

卷号：45

期号：6

起止页码：607-617

中文期刊名：森林与环境学报

外文期刊名：Journal of Forest and Environment

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金项目“干旱事件对辽西樟子松人工林碳收支过程的影响及其机制”(32301662)。

语种：中文

中文关键词：涡度相关;樟子松人工林;蒸散;表面参数;辽宁西部

外文关键词：eddy covariance;Pinus sylvestris var.mongolica plantation;evapotranspiration;surface parameters;western Liaoning Province

分类号：S715.4

摘要：为探明樟子松人工林蒸散动态变化规律及其对环境要素的响应,于2021、2022年对辽宁西部樟子松人工林蒸散和环境要素进行连续观测。结果表明:2021、2022年樟子松人工林蒸散分别为394.93、455.99 mm,降水减蒸散剩余量分别为237.87、119.11 mm。2 a生长季内樟子松人工林蒸散的主要控制因素均为净辐射、空气温度、空气相对湿度、表层土壤含水量和归一化植被指数,且归一化植被指数的相关系数均为最大。冠层导度与作物系数、Priestley-Taylor系数、耦合系数均呈现指数关系,且冠层导度阈值为10 mm·s^(-1)。当归一化植被指数大于0.55时,冠层导度、作物系数、Priestley-Taylor系数、耦合系数均随归一化植被指数增大而快速增大;饱和水汽压差对4种表面参数均有明显的抑制作用;表层土壤含水量则对4种表面参数均具有明显的线性促进作用。辽宁西部樟子松人工林可存蓄部分降水,冠层发展是控制蒸散季节动态的最重要环境要素,表面参数受植被绿度、土壤和大气水分状态的强烈影响。
This study aims to investigate evapotranspiration and its response to environmental factors and ascertain the land-atmosphere interactions in Pinus sylvestris var.mongolica plantations of China.The eddy-covariance technique and corresponding environmental sensors were used to continuously measure evapotranspiration and environmental factors in a P.sylvestris var.mongolica plantation in the western Liaoning Province in 2021 and 2022.The results showed that the plantation had the annual evapotranspiration of 394.93 mm and 455.99 mm,the precipitation minus evapotranspiration of 237.87 mm and 119.11 mm in 2021 and 2022,respectively.Net radiation,air temperature,air relative humility,top soil water content,and normalized difference vegetation index were the key controlling factors of evapotranspiration,and the correlation coefficient with normalized difference vegetation index was highest during the growing seasons in the two years.Canopy conductance had exponential relationships with crop coefficient,Priestley-Taylor coefficient,and decoupling coefficient,and the threshold value of canopy conductance was 10 mm·s^(-1).When normalized difference vegetation index was greater than 0.55,canopy conductance,crop coefficient,Priestley-Taylor coefficient,and decoupling coefficient increased rapidly with the increase in normalized difference vegetation index.The vapor pressure deficit had significantly negative effects on those surface parameters.And those surface parameters were promoted linearly by top soil water content in this plantation.The P.sylvestris var.mongolica plantation in the western Liaoning Province stored a part of precipitation.Canopy development dominated the seasonal variationsof evapotranspiration,and four surface parameters were significantly influenced by vegetation greenness and soil and atmospheric water status.