干旱区生态环境知识资源中心(Arid): 不同类型微型蒸发器测定土壤蒸发的田间试验研究

Arid

	不同类型微型蒸发器测定土壤蒸发的田间试验研究
其他题名	Field experimental study on the measurement of soil evaporation using different types of micro-lysimeters
	李王成 1; 王为 2; 冯绍元 1; 陈绍军 1; 霍再林 1
ISSN	1002-6819
出版年	2007
卷号	23 期号:10 页码:6-13
中文摘要	利用微型蒸发器(Micro-Lysimeter,简称ML)测定土壤蒸发是一种简单、有效的方法,在中国西北旱区有很大的利用价值,但目前还没有统一的ML设计标准,所以寻求适合西北旱区使用的ML类型具有重要的现实意义.该文利用不同直径、不同长度、不同材料以及不同封底情况的ML在西北旱区进行了砂土和壤土的蒸发测量试验.研究结果表明:测得的土壤蒸发量随ML直径的增大而减小,不同直径ML测得的蒸发量在0.05的水平下有显著差异,测量砂土蒸发采用直径为15 cm的ML效果较好,壤土采用10 cm的较为理想.直径较小的情况下,ML的长度对蒸发量的影响显著,直径较大时则不显著,ML的长度以20c m为宜.ML的制作材料和是否封底对蒸发测量也有显著影响,在西北旱区,采用PVC不封底的ML较好.
英文摘要	Measurement of soil evaporation using micro-lysimeter(ML) is a simple and effective method, and has great practical value in arid area of Northwest China. However, there is no uniform standard for ML design up to now. So, there is practically significance to seek ML which is applicable in such area. In this paper, some experiments for measuring evaporation using micro-lysimeters had been conducted in sandy soil and loam by MLs including different diameters, lengths, materials, sealed and unsealed. Results show that the longer the diameter of ML is, the less evaporation measured is. The difference is significant at 0.05 probability level among the evaporation values measured by ML with different diameters. The evaporation value measured with ML of 15 cm diameter is most appropriate for sandy soil, while 10 cm diameter ML is better for loam. When the diameter is shorter, the effect of length of ML on evaporation is significant, but it is not significant when the diameter is longer. ML of 20 cm length is most appropriate. The influences of the material and sealed type of ML on evaporation value are also obvious. In detail, the unsealed ML made with PVC is better for evaporation measuring in arid area of Northwest China.
中文关键词	微型蒸发器 ; 西北旱区 ; 土壤蒸发 ; 田间试验
英文关键词	micro-lysimeter arid area of northwest soil evaporation ield experiment
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3010263
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221255
作者单位	1.中国农业大学水利与土木工程学院, 北京 100083, 中国; 2.国家防汛抗旱总指挥部办公室, 北京 100053, 中国
推荐引用方式 GB/T 7714	李王成,王为,冯绍元,等. 不同类型微型蒸发器测定土壤蒸发的田间试验研究[J]. 中国农业大学,2007,23(10):6-13.
APA	李王成,王为,冯绍元,陈绍军,&霍再林.(2007).不同类型微型蒸发器测定土壤蒸发的田间试验研究.,23(10),6-13.
MLA	李王成,et al."不同类型微型蒸发器测定土壤蒸发的田间试验研究".23.10(2007):6-13.