干旱区生态环境知识资源中心(Arid): 干旱荒漠区绿洲边缘典型固沙灌木的降水截留特征

Arid

	干旱荒漠区绿洲边缘典型固沙灌木的降水截留特征
其他题名	The Interception Loss of Rainfall by Three Sand-fixing Shrubs at the Fringe of Minqin Oasis
	徐先英 1; 严平 2; 郭树江 3; 柴成武 3
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2013
卷号	33 期号:1 页码:141-145
中文摘要	在民勤绿洲边缘,降水对维持固沙灌木持续稳定发挥固沙功能具有重要作用。本文选择民勤绿洲边缘3种主要固沙灌木为研究对象,观测了降雨条件下降水穿透量和冠层截留量,分析了降水穿透量和冠层截留量与降雨量之间的关系以及截留率与降水强度之间的关系,比较了不同灌木群落的降水截留特征。结果表明,不同灌木的降水截留存在明显差异,梭梭、柽柳、生长良好白刺、衰退白刺冠层最大截留量和截留容量分别为0.6mm、0.6mm、0.4mm、0.3mm和0.8mm、0.8mm、0.5mm、0.2mm;在两年总降水量255.3mm条件下,梭梭、柽柳和生长良好白刺3种灌木群落冠层截留损失分别为44mm、88mm和32mm,占降水总量的16.6%、33.1%和12.0%;当降雨强度<0.8mm.h~(-1),梭梭和柽柳降水截留率随降水强度增加均呈递减趋势;当降水强度>0.8mm.h~(-1)时,梭梭冠层截留量与降水量的比率基本稳定在0.2~0.3之间,柽柳在0.3~0.4之间;当降水强度<0.5mm.h~(-1),生长良好白刺灌丛的降水截留率随降水强度增加呈下降趋势;当降雨强度>0.5mm.h~(-1),生长良好白刺灌丛截留率基本维持在0.1~0.2之间;降雨强度>0.4mm.h-1时,衰退白刺截留率稳定在0.05~0.1之间。
英文摘要	Precipitation plays an important role for the growth and sand fixing of fixing-sand shrubs in Minqin oasis fringe.A field observation was conducted to measure precipitation permeating canopies of three shrubs and the precipitation interception loss by canopies of the three shrubs during different rainfall events,and relationships between precipitation permeating canopies of three shrubs and precipitation,the precipitation interception loss by canopies of the three shrubs and precipitation,and precipitation interception ratio and precipitation intensity were analyzed,and the different influences of the three shrubs on canopy precipitation interception loss were compared.The results showed that,the interception loss in the canopies among the three shrubs had significant differences during individual rainfall events;the maximum interception loss for the canopies of Haloxylon ammodendron,Tamarix ramosissima, normal Nitraria tangutorum and degraded N.tangutorum were 0.6 mm,0.6 mm,0.4 mm,0.3 mm, respectively;while the maximum interception capacity were 0.8 mm,0.8 mm0.5 mm,0.2 mm,respectively;the estimated total canopy interception losses for the communities of the three shrubs were 44 mm,88 mm and 32 mm, respectively,which were 16.6%,33.1%and 12.0%of the total 255.3 mm rainfall during the two years,respectively; the proportion of interception loss to gross rainfall for H.ammodendronand T.ramosissima decreased with the rainfall intensity when rainfall intensity was less than0.8 mm.h-1,and tended to remain constant at 0.2-0.3 for H.ammodendron and 0.3-0.4 for T.ramosissima when the rainfall intensity was more than 0.8 mm.h~(-1);the proportion of interception loss to gross rainfall decreased with the rainfall intensity if rainfall intensity was less than 0.5 mm.h~(-1),and tended to keep constant at about 0.1-0.2 for the normal N.tangutorum when the rainfall intensity was over 0.5 mm.h-1;the constant interception proportion for the degraded N.tangutorum was 0.05-0.1 for when the rainfall intensity was more than 0.4 mm.h-1.
中文关键词	绿洲边缘 ; 固沙灌木 ; 降水截留
英文关键词	oasis fringe sand-fixing shrubs rainfall interception
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4740964
来源机构	北京师范大学 ; 甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230551
作者单位	1.北京师范大学减灾与应急管理研究院, 荒漠化与风沙灾害防治国家重点实验室培育基地;;民勤荒漠草地生态系统国家野外科学观测研究站, 北京 100875, 中国; 2.北京师范大学减灾与应急管理研究院, 北京 100875, 中国; 3.甘肃省治沙研究所, 荒漠化与风沙灾害防治国家重点实验室培育基地;;民勤荒漠草地生态系统国家野外科学观测研究站, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	徐先英,严平,郭树江,等. 干旱荒漠区绿洲边缘典型固沙灌木的降水截留特征[J]. 北京师范大学, 甘肃省治沙研究所,2013,33(1):141-145.
APA	徐先英,严平,郭树江,&柴成武.(2013).干旱荒漠区绿洲边缘典型固沙灌木的降水截留特征.中国沙漠,33(1),141-145.
MLA	徐先英,et al."干旱荒漠区绿洲边缘典型固沙灌木的降水截留特征".中国沙漠 33.1(2013):141-145.