干旱区生态环境知识资源中心(Arid): 祁连山青海云杉林冠降雨再分配特征及影响因素

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	祁连山青海云杉林冠降雨再分配特征及影响因素
其他题名	Rainfall Canopy Partitioning and Its Influencing Factors of Picea crassifolia Forest in the Qianlian Mountains
	万艳芳 1; 刘贤德 1; 王顺利 2; 于澎涛 3; 李广 1; 敬文茂 2; 李晓青 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2016
卷号	30 期号:5 页码:224-229
中文摘要	以祁连山排露沟小流域青海云杉林为研究对象,2015年59月观测了34场降雨的林外降雨量、穿透雨量和树干茎流量,并同步观测了相关的林外气象因子,分析了青海云杉林冠降雨再分配特征及影响因素。结果表明:(1)青海云杉林的总穿透雨量、树干茎流量和截留量分别为275.9,1.8,90.0mm,分别占总降雨量的75.04%,0.48%和24.48%,并在不同降雨量等级之间存在差异。(2)冠层降雨再分配各组成要素(穿透雨、树干茎流、林冠截留)与降雨量、降雨历时、10min最大雨强、空气相对湿度呈极显著的相关性。随着降雨量和降雨历时的增大,穿透雨量和树干茎流量均不断增大,而穿透雨率、树干茎流率和截留量(率)均逐渐趋于稳定。(3)青海云杉林内产生穿透雨和树干茎流的临界降雨量分别为0.8mm和9.6mm。因此,气象因素是影响冠层降雨再分配的重要因素之一。
英文摘要	Rainfall was partitioned into three parts through the vegetable canopy:Throughfall,stemflow and interception.This process played a determining role in water balance for forest stands and in regulating processes of this mountainous region.In the present study,an experiment was carried out in the Pailugou watershed in the Qilian mountains,in the arid region of northwest China.In a 72-year-old Picea crassifolia forest stand,throughfall,stemflow and canopy interception of 34rain events were observed from May 1to September 31,2015.Further more,the related meteorological factors,including air temperature(T),air relative humidity(Rh)and precipitation(P)were simultaneously monitored by an automatic meteorological station in the outside forest.Then,we analyzed the characteristics of rainfall canopy partitioning and their influence factors.The results showed that:(1)During the total observation period,the total throughfall, stemflow and interception of Picea crassifolia forest were 275.9,1.8,90.0 mm,and accounted for 75.04%,0.48%and 24.48% of the total atmospheric precipitation,respectively.Meanwhile,their ratios varied significantly under different rainfall grades.(2)The three parts of rainfall canopy partitioning were significantly correlated with rainfall,rainfall duration,maximum rainfall intensity in 10minutes and relative air humidity.With the increase of rainfall and rainfall duration,throughfall and stemflow would constantly increase and their ratios would become more and more stable.(3)The critical rainfall amounts for the occurrence of throughfall and stemflow were 0.8mm and 9.6mm respectively.Therefore,we concluded that meteorological factors were the important factors of rainfall canopy partitioning.
中文关键词	降雨再分配 ; 气象因素 ; 青海云杉林 ; 祁连山
英文关键词	rainfall partitioning meteorological factors Picea crassifoliaforest Qilian mountains
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:5824673
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234984
作者单位	1.甘肃农业大学林学院, 兰州, 甘肃 730070, 中国; 2.甘肃省祁连山水源涵养林研究院, 张掖, 甘肃 734000, 中国; 3.中国林业科学研究院森林生态环境与保护研究所, 北京 100091, 中国
推荐引用方式 GB/T 7714	万艳芳,刘贤德,王顺利,等. 祁连山青海云杉林冠降雨再分配特征及影响因素[J]. 甘肃农业大学,2016,30(5):224-229.
APA	万艳芳.,刘贤德.,王顺利.,于澎涛.,李广.,...&李晓青.(2016).祁连山青海云杉林冠降雨再分配特征及影响因素.水土保持学报,30(5),224-229.
MLA	万艳芳,et al."祁连山青海云杉林冠降雨再分配特征及影响因素".水土保持学报 30.5(2016):224-229.