黄土区防护林主要造林树种水分供需关系研究

应用生态学报 ›› 2001, Vol. ›› Issue (2): 185-189.

黄土区防护林主要造林树种水分供需关系研究

魏天兴, 余新晓, 朱金兆, 吴斌

北京林业大学水土保持学院, 北京100083

收稿日期:1999-04-12 修回日期:1999-06-28
通讯作者: 魏天兴,男,1970年生,博士,副教授,主要从事防护林体系营造与效益评价研究,发表论文10余篇,E-mail:weitx@ss2.bjfu.edu.cn
基金资助:
国家自然科学基金(30070630);国家“九五”科技攻关项目(96070101)

Relationship between water supply and consumption of main planting tree species of protection forests in loess area of western Shanxi Province

WEI Tianxing, YU Xinxiao, ZHU Jinzhao, WU Bin

Collgeg of Water and Soil Conservation, Beijing Forestry University, Beijing 100083

Received:1999-04-12 Revised:1999-06-28

摘要/Abstract

摘要： 通过3年的定位观测,分析了晋西黄土区防护林主要造林树种刺槐和油松林地供水与耗水关系.油松和刺槐林地4～6月林地土壤水分消耗大于供给,供耗矛盾突出;雨季水分供应充足,土壤贮水增加;相同条件下,密度大的林分耗水量较大.在干旱季节和年份,相同条件下,密度大的林分林地有效供水较少,林地水分亏损较为严重;不同坡向的水分亏缺量大小顺序为阳坡>半阳坡>阴坡.本文引入耗水特性系数来表示林分耗水的大小和需水量的满足程度.研究表明,用耗水特性系数表示林木规律和水分供耗关系是合适的衡量指标.

关键词: 林地供水, 林木耗水, 森林蒸散, 耗水特性系数, 水量平衡, 防护林

Abstract: Based on three years point-fixed observation,this paper analyzed the relationship between water supply and consumption of black locust(Robinia pseudoscacia L.)and Chinese pine(Pinus tabulaeformis Carr.),the main tree species of protection forests in the loess area of the western Shanxi Province.In April,May and June,the water supply was less than water consumption,while in raining season,the water supply was abundant,and the water storage in soil was increased. During dry seasons and years, more water consumption and less available water supply occurred in high-density stand,showing a serious water deficiency. The water deficiency was in order of south-facing slope>semi-south-facing slope>north-facing slope.The study shows that water consumption characters coefficient could be used as an index to indicate the growth pattern of trees,and the relationship between water supply and consumption.

Key words: Water supply from forested land, Water consumption by forest trees, Forest evapotranspiration, Water consumption character, Water balance, Protection forest

中图分类号:

S727.2

魏天兴, 余新晓, 朱金兆, 吴斌. 黄土区防护林主要造林树种水分供需关系研究[J]. 应用生态学报, 2001, (2): 185-189.

WEI Tianxing, YU Xinxiao, ZHU Jinzhao, WU Bin . Relationship between water supply and consumption of main planting tree species of protection forests in loess area of western Shanxi Province[J]. Chinese Journal of Applied Ecology, 2001, (2): 185-189.

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