黄土丘陵区人工油松林和山杨林林冠截留作用的研究

刘向东; 吴钦孝; 赵鸿雁

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黄土丘陵区人工油松林和山杨林林冠截留作用的研究

论文

- 黄土丘陵区人工油松林和山杨林林冠截留作用的研究
- A Preliminary Study on Interceptive Function of the Canopy of Pinus tabulaeformis and Populus davidiana Stands in the hiyg Areas on the Loess Plateau
- 水土保持通报 1991年10卷第2期页码：4-7
- 作者机构：
  
  中国科学院水利部西北水土保持研究所陕西杨陵
- 作者简介：
- 基金信息：
  
  国家自然科学基金
- DOI：
  中图分类号：
- 纸质出版：1991
- 稿件说明：
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刘向东, 吴钦孝, 赵鸿雁. 黄土丘陵区人工油松林和山杨林林冠截留作用的研究[J]. 水土保持通报, 1991,10(2):4-7.

Liu Xiangdong, Wu Qinxiao, Zhao Hongyan. A Preliminary Study on Interceptive Function of the Canopy of Pinus tabulaeformis and Populus davidiana Stands in the hiyg Areas on the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 1991, 10(2): 4-7.
刘向东, 吴钦孝, 赵鸿雁. 黄土丘陵区人工油松林和山杨林林冠截留作用的研究[J]. 水土保持通报, 1991,10(2):4-7. DOI：

Liu Xiangdong, Wu Qinxiao, Zhao Hongyan. A Preliminary Study on Interceptive Function of the Canopy of Pinus tabulaeformis and Populus davidiana Stands in the hiyg Areas on the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 1991, 10(2): 4-7. DOI：

摘要

本文研究了25年林龄的油松人工林和天然山杨林的林冠截留量及其变化。结果表明:油松人工林和山杨林林冠年截留量分别为95.2mm和73.4mm

占年降水量的19.6%和14.7%。其中对降雨的截留量分别为78.0mm和71.1mm

分别占降雨量的17.4%和15.5%;对降雪的截留量为17.2mm和2.3mm

分别占降雪量的45.1%和5.9%。林冠截留量也有季节变化

两林分夏季截留量51mm

占同期降水量的15.8%。油松林冬季截留量较小

但占同期降水量的比例高

山杨林两者均小。林冠截留过程分为截留、透过、饱和三个阶段

其累积截留量与累积降水量呈I=apb函数关系。

Abstract

The intercepted precipitation and its variation of the canopy of Pinus tabulaeformis and Populus davidiana of 25 years old have been studied.The conclusion shows that the intercepted precipitation of Pinus tabulae-formis and Popular davidiana are 95

2mm and 73.4mm

accounting for 19.6and 14.700 of yearty total ramfall respectively; Intercepted rainfall is78mm and 71.lmm

accounting for 17.40o and 15

500 of rainfall; Intercepted snow is 17.2mm and 2

3mm

accounting for 45.1%and 5.900 of snowfall.The intercepted amount of the canopy changes with different seasons

In summer

the intercepted amount is 51mm

15.8} of the annual rainfall.In spring and winter

Pinus tabulaeformis intercepted amount is low

and intercepted rate is high

Also

both of them in Populus davidians are low

The interceptive process of the canopy is divided into three stages as intercepting

falling raindrop and saturating

The function between the accumulated interceptation and precipitation presents I=apb.

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