黄土丘陵区2种典型林分降雨分配特征及其主要影响因素

王淑春; 程然然; 杜盛

doi:10.13870/j.cnki.stbcxb.2022.03.025

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黄土丘陵区2种典型林分降雨分配特征及其主要影响因素

更新时间：2026-04-09

- 黄土丘陵区2种典型林分降雨分配特征及其主要影响因素
- Characteristics and Main Influencing Factors of Rainfall Partitioning in Two Typical Forests in the Loess Hilly Region
- 水土保持学报 2022年36卷第3期页码：173-180
- 作者机构：
  
  1. 西北农林科技大学林学院, 陕西杨凌,712100
  2. 西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  3. 景德镇学院,江西,景德镇,333000
  4. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
  
  [ "王淑春(1997-),女,在读硕士研究生,主要从事植被恢复与生态水文研究。E-mail:shuchun.wang329@qq.com" ]
- 基金信息：
  
  国家重点研发计划项目(2017YFC0504601)
- DOI：10.13870/j.cnki.stbcxb.2022.03.025
  中图分类号： S715.2
- 网络首发：2022-05-27，
  
  纸质出版：2022
- 稿件说明：
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王淑春, 程然然, 杜盛. 黄土丘陵区2种典型林分降雨分配特征及其主要影响因素[J]. 水土保持学报, 2022,36(3):173-180.

WANG Shuchun, CHENG Ranran, DU Sheng. Characteristics and Main Influencing Factors of Rainfall Partitioning in Two Typical Forests in the Loess Hilly Region[J]. 2022, 36(3): 173-180.
王淑春, 程然然, 杜盛. 黄土丘陵区2种典型林分降雨分配特征及其主要影响因素[J]. 水土保持学报, 2022,36(3):173-180. DOI： 10.13870/j.cnki.stbcxb.2022.03.025.

WANG Shuchun, CHENG Ranran, DU Sheng. Characteristics and Main Influencing Factors of Rainfall Partitioning in Two Typical Forests in the Loess Hilly Region[J]. 2022, 36(3): 173-180. DOI： 10.13870/j.cnki.stbcxb.2022.03.025.

摘要

森林对降雨的分配是森林生态水文和生物地球化学循环中的重要过程之一。通过对黄土丘陵区2种典型林分(刺槐林和辽东栎林)生长季降雨分配过程的实地监测

探究2种林分的降雨分配特征及其主要影响因素。结果表明:试验期间

刺槐林和辽东栎林降雨分配各组[JP]分均表现为穿透雨量(325.0

295.1 mm)＞冠层截留量(39.8

73.6 mm)＞树干径流量(25.8

21.9 mm)

同时穿透雨率(83.2%和75.6%)＞冠层截留率(10.2%和18.8%)＞树干径流率(6.6%和5.6%)。次降雨量是影响降雨分配的关键因子

穿透雨量和树干径流量与次降雨量间呈现极显著线性关系

冠层截留量与次降雨量间呈现极显著对数函数关系;穿透雨率和树干径流率与次降雨量间呈现显著对数函数关系

冠层截留率与次降雨量间呈现极显著指数函数关系。刺槐林和辽东栎林产生穿透雨的次降雨阈值分别为1.0

1.3 mm

产生树干径流的次降雨阈值分别为5.9

5.4 mm。刺槐林产生的穿透雨量和[JP]树干径流量均大于辽东栎林

而冠层截留量小于辽东栎林。研究结果为黄土丘陵区森林生态水文过程的研究提供基础数据

对该地区植被恢复过程中植被类型的选择具有指导意义。

Abstract

Rainfall partitioning by forests is one of the important processes in forest eco-hydrological and biogeochemical cycles. In this study

the characteristics and main influencing factors of rainfall partitioning of two typical forest types (Robinia pseudoacacia plantation and Quercus liaotungensis natural secondary forest) were investigated by field monitoring during the growing season in the loess hilly region. The results showed that during the experiment

the components of rainfall partitioning in R. pseudoacaciaplantation and Q. liaotungensis forest were in the order of throughfall (325.0 and 295.1 mm) > canopy interception (39.8 and 73.6 mm) >stemflow (25.8 and 21.9 mm)

and throughfall rate (83.2% and 75.6%) > canopy interception rate (10.2% and 18.8%) >stemflow rate (6.6% and 5.6%). Rainfall amount was the key factor affecting rainfall partitioning. A highly significant linear relationship was observed between throughfall and stemflow and rainfall amount

while the relationship between canopy interception and rainfall amount exhibited a highly significant logarithmic function. A significant logarithmic relationship existed between throughfall rate and stemflow rate and rainfall amount

while a highly significant exponential relationship was found between canopy interception rate and rainfall amount. Throughfall processed when rainfall exceeded 1.0 and 1.3 mm for R. pseudoacacia plantation and Q. liaotungensis forest

respectively. Stemflow processed when rainfall exceeded 5.9 and 5.4 mm for R. pseudoacacia plantation and Q. liaotungensis forest

respectively. The throughfall and stemflow generated by R. pseudoacaciaplantation were larger than that of Q. liaotungensis forest

while the canopy interception was smaller than that of Q. liaotungensis forest. This study provides basic data for the research of eco-hydrological processes in the loess hilly region

and has guiding significance for the selection of vegetation types in the process of vegetation restoration in this area.

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