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不同规格微型蒸渗仪测定土壤蒸发的试验研究
杨宪龙1,2; 魏孝荣1,2; 邵明安2,3
2017
Source Publication土 壤 通 报
Volume48Issue:2Pages:343-350
Abstract

以陕北风沙土为研究对象,比较了微型蒸渗仪高度(10、15、20 和 25 cm)、内径(10 和 15 cm)和封底材料(薄铁皮和
细纱布)对土壤蒸发测定结果的影响。结果表明,不同规格蒸渗仪测定的土壤蒸发量具有很好的相关性。当内径为 10 cm
时,土壤蒸发量的测定值随高度的增加而增加,高度为 20 cm 时的测定值显著大于 10 cm 时。当高度为 10 cm 时,将内径由
10 cm 增加至 15 cm 对土壤蒸发的测定没有显著影响。高度和内径一定时,将封底材料由薄铁皮换为细纱布时测定的土壤
蒸发量显著增加。高度为 20 cm 时,土壤蒸发测定的精度最高,为 98.5%,其次是高度为 25 cm 和 15 cm 时,精度分别为
96.3%和 93.5%。综合考虑精度和便捷性,推荐使用高度为 20 cm、内径为 10 cm 且用薄铁皮封底的微型蒸渗仪。

Other Abstract

 This study investigated the effects of the heights (10, 15, 20, 25 cm), inner diameters (10, and 15 cm), and
back covering materials (thin iron sheet, and fine gauze) of micro-lysimeters on the measurement of evaporation in
aeolian sandy soils in northern Shaanxi Province. The results indicated good correlations among the values measured
by the different micro-lysimeters. Measured soil evaporation tended to increase with the increasing in the heights of
lysimeters. Soil evaporation measured using the lysimeters of 20 cm height was significantly higher than that using the
lysimeters of 10 cm height. No significant difference was observed between the values of soil evaporation measured
using the lysimeters of 10 cm and 15 cm inner diameter under the height of 10 cm. However, the measured values
were significantly higher in the lysimeters using iron than that using fine gauze as the back covering material. The
precision of the measurement was the highest (98.5%) in the lysimeters of 20 cm height, followed by in that of 25 cm
height (96.3%), and then in that of 15 cm height (93.5%). In consideration of accuracy and convenience, lysimeters
with a height of 20 cm, inner diameter of 10 cm, and a back cover of thin iron sheet were optimize for measuring the
evaporation of aeolian sandy soil in this area.

Keyword高度 内径 封底材料 精度
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8677
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学 资源环境学院,陕西 杨凌 712100
2.西北农林科技大学黄土高原土壤侵蚀与 旱地农业国家重点实验室,陕西 杨凌 712100
3.中国科学院 地理科学与资源研究所,北京 100101
Recommended Citation
GB/T 7714
杨宪龙,魏孝荣,邵明安. 不同规格微型蒸渗仪测定土壤蒸发的试验研究[J]. 土 壤 通 报,2017,48(2):343-350.
APA 杨宪龙,魏孝荣,&邵明安.(2017).不同规格微型蒸渗仪测定土壤蒸发的试验研究.土 壤 通 报,48(2),343-350.
MLA 杨宪龙,et al."不同规格微型蒸渗仪测定土壤蒸发的试验研究".土 壤 通 报 48.2(2017):343-350.
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