宁夏六盘山水源区华北落叶松人工林的生长季水量平衡与产流特征

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• 英文论文题名：Characteristics of water budget and water yield of the Larix principis-upprechtii plantation in the waterhead area of Liupan Mountains,Northwest China
• 论文作者：杨丽丽 ; 王彦辉 ; 文仕知 ; 邢元军 ; 李振华
• 英文论文作者：Yang Lili ; Wang Yanhui ; Wen Shizhi ; Xing Yuanjun ; Li Zhenhua ; College of Forestry ; Central South University of Forestry and Technology ; Research Institute of Forest Ecology ; Environment and Protection ; Chinese Academy of Forestry ; Central South Forest Inventory and Planning Institute of State Forestry Administration
• 年：2015
• 作者机构：中南林业科技大学林学院;中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境重点实验室;国家林业局中南林业调查规划设计院;
• 论文关键词：六盘山 ; 水源地 ; 华北落叶松林 ; 水文过程 ; 水量平衡 ; 产流特征
• 英文论文关键词：Liupan Mountains ; waterhead area ; Larix principis-rupprechtii plantation ; hydrologic process ; water budget ; water yield
• 会议召开时间：2015-09-01
• 会议录名称：2015海峡两岸水土保持学术研讨会论文集（下）
• 英文会议录名称：Proceedings of Cross-strait Symposium on Soil and Water Conservation 2015
• 语种：中文
• 分类号：S791.22
• 学会代码：OGSJ
• 会议名称：2015海峡两岸水土保持学术研讨会
• 会议地点：中国山西太原
• 主办单位：中国水土保持学会、台湾中华水土保持学会
• 学会名称：中国水土保持学会
• 页数：8
• 文件大小：1816k
• 原文格式：O
• 会议级别：全国

摘要

本文在作为我国西北干旱缺水地区的重要水源地的宁夏六盘山区,选择具有典型代表性的华北落叶松人工林样地,观测了2011年生长季(5月24日至10月20日)的水文过程,分析了水量平衡与产流特征。结果表明:2011生长季降水丰富,总降水量为724.3 mm;华北落叶松林分冠层截留量(率)为124.9 mm(17.25%),穿透雨量(率)为596.8mm(82.40%),树干干流量(率)为2.6mm(0.35%),二者合计所得林下降水量(率)为599.4 mm(82.75%);枯落物层渗漏水量(率)为407.2 mm(56.22%);0-30 cm土层渗漏水量(率)为244.2 mm(33.72%)。华北落叶松林的生长季总蒸散为482.5 mm,其分量及占降水比例分别为植被截持124.9 mm(17.25%)、林木蒸腾204.5 mm(28.23%)、林下蒸散153.1mm(21.14%))。各蒸散分量对总蒸散的贡献表现为林木蒸腾>林下蒸散>植被截持。2011年生长季水量平衡计算表明,该年生长季降水量可充分满足华北落叶松林蒸散耗水需要,林地产水量(0-30cm土层的净流出量)为178.3 mm。
In this study,the representative stand of Larix principis-rupprechtii plantation were selected in the Liupan Mountains,an important waterhead area in the dryland region of Ningxia in Northwest China.The observation of hydrological processes was carried out in the growing season of 2011(May 24 to October 20).The main characteristics of the water budget and water yield of the forest stands were analyzed.The main conclusions are described below.The gross precipitation in the growing season of 2011 amounted to 724.3 mm,it is higher than normal years.The canopy interception depth(rate) in the Larix principis-rupprechtii plantation was;124.9 mm(17.25%).The depth(rate) of throughfull was 596.8mm(82.40%).The depth(rate) of stemflow was 2.6mm(0.35%).The depth(rate) of rainfall under canopy was 599.4 mm(82.75%).The leakage depth(rate) under humus layer was 407.2 mm(56.22%).The leakage depth(rate) under the 0-30 cm soil layer was 244.2 mm(33.72%)。 According to the measurement,the growing season evapotranspiration of Larix principis-rupprechtii plantation was 482.5 mm,with the components(depth and ratio to precipitation) of canopy interception of 124.9 mm(17.2%),tree transpiration of 204.5 mm(28.2%),and floor evapotranspiration of 153.1 mm(21.1%).The contribution of evapotranspiration components is in the order of;tree transpiration > floor evapotranspiration > canopy interception.The calculation of water budget in growing season of 2011 indicated that the rainfall amount was sufficient to meet the demand of evapotranspiration in the Larix principis-rupprechtii plantation stands studied.The water yield(i.e.,the net output from soil layer of 0-30 cm) performed as 178.3 mm.

引文

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