[1]黄团冲,贺康宁*,王先棒. 青海大通白桦林冠层降雨再分配与冠层结构关系研究[J].西北林学院学报,2018,33(3):1-6.[doi:10.3969/j.issn.1001-7461.2018.03.01]
 HUANG Tuan-chong,HE Kang-ning*,WANG Xian-bang. Relationship between Rainfall Redistribution and Canop Structure of Betula platyphylla Canopy in Datong,Qinghai[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(3):1-6.[doi:10.3969/j.issn.1001-7461.2018.03.01]
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 青海大通白桦林冠层降雨再分配与冠层结构关系研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第3期
页码:
1-6
栏目:
出版日期:
2018-05-31

文章信息/Info

Title:
 Relationship between Rainfall Redistribution and Canop Structure of Betula platyphylla Canopy in Datong,Qinghai
文章编号:
1001-7461(2018)03-0001-06
作者:
 黄团冲贺康宁*王先棒
 (北京林业大学 水土保持学院,国家林业局水土保持重点实验室,北京市水土保持工程技术研究中心,林业生态工程教育部工程研究中心,北京 100083)
Author(s):
 HUANG Tuan-chongHE Kang-ning*WANG Xian-bang
 (School of Soil and Water Conservation Beijing Forestry University,Key Laboratory of State Forestry Administration on Soil and Water Conservation,Beijing Engineering Research Center of Soil and Water Conservation,Engineering Research Center of Forestry Ecological Engineering of Ministry of Education,Beijing 100083,China)
关键词:
 白桦降雨再分配冠层结构降雨量
Keywords:
 Betula platyphylla rainfall redistribution canopy structure rainfall
分类号:
S792.153
DOI:
10.3969/j.issn.1001-7461.2018.03.01
文献标志码:
A
摘要:
 通过设计不同密度的12个样地,测定降雨再分配与冠层结构指标的关系以及不同降雨量下降雨再分配变化情况。结果表明,当降雨量<10 mm时,穿透雨量与冠层结构特征关系并不明显,但是其空间变化明显,变异系数较大;降雨量>10 mm后,叶面积指数、郁闭度均与穿透雨量呈多项式函数关系,穿透雨量随着叶面积指数、郁闭度的增大而减小,穿透雨量与冠层孔隙度呈负相关的多项式函数关系;林冠截留率随着叶面积指数和郁闭度的增大而增大,随着冠层孔隙度的增大而减小;叶面积指数、冠层孔隙度和郁闭度3个冠层结构指标之间,叶面积指数对穿透雨和林冠截留影响最大。研究期间,林外降雨总量为243.24 mm,白桦林的总穿透雨量、树干茎流量、截留量分别为185.61、2.49 mm和56.55 mm,分别占大气降雨总量的76.31%、1.02%和23.24%;穿透雨量、树干茎流量、截留量均与林外降雨量呈显著正相关关系,穿透雨率、树干茎流率随着降雨量的增大而增大,截留率随着降雨量的增大而减小并逐渐趋于稳定;降雨量>3.32 mm时才开始产生树干茎流。
Abstract:
 In order to determine the relationship between rainfall redistribution and canopy structure indexes and changes of rainfall redistribution under different rainfall conditions in Betula platyphylla forest,12 plots with different densities were designed.The results showed that when the rainfall was less than 10 mm,the relationship between the rainfall and canopy structure was not significant,but its spatial variation was obvious and the coefficient of variation was larger.When the rainfall was more than 10 mm,the leaf area index and canopy density had polynomial function relationship with throughfall rainfall,and throughfall decreased with the increase of leaf area index and canopy density,throughfall and canopy porosity were negatively related to polynomial function.The interception rate of canopy increased with the increase of leaf area index and canopy density,and decreased with the increase of canopy porosity.For the three canopy structure indexes (leaf area index,canopy porosity,and canopy density),leaf area index greatly affected the interception throughfall and canopy.During the study period,the total rainfall was 243.24 mm,and the total throughfall,stemflow and interception were 185.61,2.49,and 56.55 mm,accounting for 76.31%,1.02% and 23.24% of the total rainfall,respectively.Throughfall,stemflow and interception were positively correlated with the forest rainfall,throughfall rate,stem flow rate increased with the increase of rainfall,the interception rate decreased with the increase of rainfall and tended to be stable.

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备注/Memo

备注/Memo:
 收稿日期:2017-08-10修回日期:2017-11-30
基金项目:国家自然科学基金“西北高寒山区防护林体系定向调控技术研究与示范”(2015BAD07B030302)。
作者简介:黄团冲,男,在读硕士,研究方向:水土保持、 林业生态工程。E-mail:htcbjfu@163.com
*通信作者:贺康宁,男,教授,博士生导师,研究方向:水土保持、林业生态工程。E-mail:hkn@bjfu.edu.cn
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