干旱区生态环境知识资源中心(Arid): 沙漠人工植被降水截留特征研究

Arid

	沙漠人工植被降水截留特征研究
其他题名	Interception of Artificial Vegetation in Desert Area
	张志山; 张景光; 刘立超; 王新平; 李新荣
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2005
卷号	27 期号:5 页码:761-766
中文摘要	2004年4～10月,选择两种主要固沙(半)灌木为研究对象,观测了植物冠层在自然降水条件下的截留量和穿透冠层的降水量,并模拟了它们与降水参数间的关系.结果表明:试验期间共降水110.9 mm,50%的降水量<2 mm,80%的降水量<6 mm,以短暂而零星的小降水为主,降水次数呈偏态分布.由于植物冠层的截留而使柠条和油蒿冠层下的降水量极显著地小于降水量(P≤0.01).与油蒿相比,具有高大冠层结构的柠条冠层下的降水量在大多数情况下显著高于油蒿的(P≤0.05);两种植物冠层下方不同部位对降水穿透量的影响结果差异不显著(P>0.05)、显著(P≤0.05)和极显著(P≤0.01)约各占1/3;试验期间柠条和油蒿的冠层截留总量分别为10.7 mm和3.7 mm.两种植物冠层下穿透降水量与降水量和降水历时的多元回归方程达到极显著水平(P<0.0001),但逐步回归分析表明穿透降水量与降水历时的关系不明显(P>0.05),因而提出了穿透降水量与降水量间的线性公式(P<0.0001)能更好的表达这种关系;两种植物冠层截留量与降水量呈指数关系(P<0.05),理论上当降水量无穷大时截留量接近于常数项,即柠条冠层的最大截留量为3.5 mm,油蒿冠层的最大截留量为1.0 mm.
英文摘要	From April to October 2004, two shrubs were selected to investigate the penetrable precipitation under canopies, and then to simulate the relationship of them. The results show that precipi-tation was 110. 9 mm in the experimental period. Precipitation event was short and spasmodic; the number of precipitation events was partial distribu-tion, with 50% and 80% of precipitation events were less than 5 mm and 8 mm, respectively. The penetrable precipitations under both plant crowns were significantly less than precipitation(P<0. 01) and different each other (P<0. 05). Because of the higher and bigger canopy, Caragana korshinskii has the intercepted precipitation significantly more than Artemisia ordosica. The results from influ-ence of location on penetrable precipitations were 1/3 significant different, respectively. The total pene trable precipitation is 10. 7 mm and 3. 7 mm for C. korshinskii and A. ordosica during the experimen-tal period, respectively. Multiple regression analysis indicates that the relationship of penetrable precipitation and precipitation and precipitation duration has high level of significance (P<0. 0001), but the result by stepwise regression analysis shows that the relationship of penetrable precipita-tion and precipitation duration is low level of sig nificance (P<0. 05). Thus, a linear equation is suggested, which would express the relationship better (P<0. 0001). Besides, exponential equation between canopy interception and precipitation can express the relationship well ( P < 0. 05). In theory, when precipitation is infinitely great, the interception will be constant, i. e. the maximum interception will be 3. 5 mm for C. korshinskii and 1. 0 mm for A. ordosica.
中文关键词	沙漠区 ; 人工植被 ; 降水截留 ; 模拟
英文关键词	desert area artificial vegetation intercepted precipitation simulationno significant 1/3 significant and 1/3 very
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:2030077
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205933
作者单位	中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	张志山,张景光,刘立超,等. 沙漠人工植被降水截留特征研究[J]. 中国科学院西北生态环境资源研究院,2005,27(5):761-766.
APA	张志山,张景光,刘立超,王新平,&李新荣.(2005).沙漠人工植被降水截留特征研究.冰川冻土,27(5),761-766.
MLA	张志山,et al."沙漠人工植被降水截留特征研究".冰川冻土 27.5(2005):761-766.