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›› 1989, Vol. 25 ›› Issue (3): 220-227.

• 论文及研究报告 • 上一篇    下一篇

六盘山林区森林树冠截留、枯枝落叶层和土壤水文性质的研究

刘向东 吴钦孝 苏宁虎   

  1. 中国科学院西北水土保持研究所
  • 收稿日期:1987-05-11 修回日期:1900-01-01 出版日期:1989-05-25 发布日期:1989-05-25

STUDIES ON RAINFALL INTERCEPTION IN CANOPY, LITTER AND SOIL HYDROLOGICAL CHARACTERISTICS OF FORESTS IN LIUPANSHAN MOUNTAINS

Liu Xiangdong,Wu Qinxiao,Su Ninghu   

  1. Northwestern Institute of Soil and Water Conservation, Academia Sinica
  • Received:1987-05-11 Revised:1900-01-01 Online:1989-05-25 Published:1989-05-25

摘要: 本文测定了六盘山林区主要森林类型的树冠截留降水作用、林地枯枝落叶蓄积量、含水量的动态变化和对降水的截留量,分析了土壤水分入渗能力及其影响因素。结果表明,六盘山林区主要森林类型树冠截留量为16.2—29.1%;枯枝落叶层蓄积量为10—12t/ha,最大持水量相当于3—6mm的降雨,该层对降雨的截留量5.6—13.1%;林区土壤非毛管孔隙贮水量少,乔木林地233.5—1088.6t/ha,灌木林地390—669t/ha,草地236—475t/ha,土壤表层水分入渗率从高到低为乔木林地、灌木林地、草地。

关键词: 树冠截留, 枯枝落叶层含水量, 枯枝落叶层截留量, 枯枝落叶层截留过程, 土壤贮水量, 土壤入渗能力

Abstract: The rainfall interception in canopy of main forest types, litter storage in forest lands, dynamic changes in water contents, as well as its effect on rainfall interception in Liupanshan forests have been determined in this paper. The infiltration capacity of soil for water and its related factors have also been analysed. It was shown that the interception of rainfall in canopy of main forest types is about 16.2—29.1%, litter storage is 10—12 t/ha, its minimum water-holding capacity is equivalent to the rainfall in 3—6mm, the interception of mainfall in litter is 5.6—13.1%. There is a little water storage in non-capillary pore of forest soil, 233.5—1088.6t/ha in the arbor forest, 390—669t/ha in the bush forest, and 236—475t/ha in the grassland, thus water infiltration rate of soil surface layer is arbor forest, bush forest and grassland from higher to lower.

Key words: Interception of rainfall in canopy, Water content in litter, Interception of rainfall in litter, Interception process of rainfall in litter, Water storage in soil, Infiltration capacity of soil