Throughfall Characteristics and Its Simulation in Natural Mixed Forest of Coniferous and Broad-leaved Trees

ZHOU Wei; KANG Yong-xiang; LIU Jian-jun; XIA Guo-wei; LIU Xiao-lin

doi:10.13961/j.cnki.stbctb.2014.03.021

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Throughfall Characteristics and Its Simulation in Natural Mixed Forest of Coniferous and Broad-leaved Trees

- Throughfall Characteristics and Its Simulation in Natural Mixed Forest of Coniferous and Broad-leaved Trees
- Bulletin of Soiland Water Conservation Vol. 33, Issue 3, Pages: 109-115(2014)
- 作者机构：
  
  1. 西北农林科技大学林学院, 陕西杨凌,712100
  2. 贺兰山森林生态系统定位研究站,宁夏,银川,750021
  3. 甘肃小陇山森林生态系统定位研究站,甘肃,天水,741022
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.03.021
  CLC：
- Published：2014
- 稿件说明：
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ZHOU Wei, KANG Yong-xiang, LIU Jian-jun, et al. Throughfall Characteristics and Its Simulation in Natural Mixed Forest of Coniferous and Broad-leaved Trees[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 109-115.
DOI：

ZHOU Wei, KANG Yong-xiang, LIU Jian-jun, et al. Throughfall Characteristics and Its Simulation in Natural Mixed Forest of Coniferous and Broad-leaved Trees[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 109-115. DOI： 10.13961/j.cnki.stbctb.2014.03.021.

摘要

为了评估天然针阔混交林的生态水文功能

利用传统统计学和地统计学方法

对小陇山天然次生针阔混交林下穿透降雨特征及其空间分布格局与降雨量的关系进行分析研究。共收集了总降雨量947.3 mm的29次降雨事件数据

总穿透雨量和穿透率分别为742.6 mm和0.783 9。结果表明

穿透雨量随大气降雨量的增加而增加

直线、对数函数和Mitscherlich模型均能很好地描述二者的相关关系。穿透率随降雨量的增加而增大

最终趋于稳定值

可应用对数模型和Mitscherlich模型模拟穿透率与降雨量的关系。穿透降雨变异系数与降雨量呈负相关关系

可以用Mitscherlich模型较好地描述。穿透降雨空间分布的不均匀度随降雨量的增加有下降的趋势

并逐渐趋于稳定。穿透率的空间分布形态在不同雨量级存在明显差别。

Abstract

To evaluate eco-hydrological functions of natural mixed forest of coniferous and broad-leaved trees

a research on the relationships among throughfall characteristics

spatial throughfall distribution patterns and rainfall in natural secondary mixed forest of Xiaolong Mountains was conducted by statistics and geostatistics. Data of 29 rainfall events with gross precipitation of 947.3 mm were collected. Total throughfall and throughfall ratio were 742.6 mm and 0.783 9

respectively. Throughfall increased with increasing rainfall

which can be well described by linear

logarithmic and Mitscherlich models. The more the rainfall amount

the higher the throughfall ratio was. Moreover

throughfall ratio increased with increasing rainfall and the relationship can be well described by logarithmic and Mitscherlich models. Variation coefficient of throughfall is negatively correlated with precipitation and the relationship can be described by Mitscherlich model. As rainfall increases

the ununiformity of spatial distribution of throughfall tended to decline and eventually approached a steady state. The spatial distributions of throughfall showed significant differences among different rainfall classes.

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