[1]高志永,汪有科*,周玉红,等. 微观时间尺度气象因子影响露水量的通径分析[J].西北林学院学报,2014,29(05):12-18.[doi:doi:10.3969/j.issn.1001-7461.2014.05.03]
　GAO Zhi-yong,WANG You-ke*,ZHOU Yu-hong,et al. Path Analysis on Sensitivity of Meteorological Factors to Dew Amount in Micro-scale[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2014,29(05):12-18.[doi:doi:10.3969/j.issn.1001-7461.2014.05.03]
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 微观时间尺度气象因子影响露水量的通径分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第29卷
期数:
2014年05期
页码:
12-18
栏目:
出版日期:
2014-09-30

文章信息/Info

Title:
 Path Analysis on Sensitivity of Meteorological Factors to Dew Amount in Micro-scale
文章编号:
1001-7461(2014)05-0012-07
作者:
 高志永1; 汪有科1; 2*; 周玉红1; 魏新光1; 张琳琳3; 陈滇豫1; 卢俊寰4
 (1．西北农林科技大学 水利与建筑工程学院，陕西 杨陵 712100；2.中国科学院水利部 水土保持研究所，陕西 杨陵 712100；3.陕西省河流工程技术研究中心，陕西 西安 710018 ；4．广西壮族自治区国土资源厅 土地整理中心，广西 南宁 530028)
Author(s):
 GAO Zhi-yong1; WANG You-ke1; 2*; ZHOU Yu-hong1;  WEI Xin-guang1;  ZHANG Lin-lin3;  CHEN Dian-yu1; LU Jun-huan4
 (1. College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China；2. Soil and Water Conservation and Ecological Environment Research Center, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; 3. Shaanxi Engineering Research Center of River, Xi’an, Shaanxi 710018, China；4.Land Consolidation and Rehabilation Center, Department of Land and Resources of Guangxi, Nanning, Guangxi 530028, China)
关键词:
 ; 露水量; 气象因子; 微观尺度; 敏感性; 通径分析
Keywords:
 ; dew amount;  meteorological factor;  micro scale;  sensitivity;  path analysis
分类号:
S716
DOI:
doi:10.3969/j.issn.1001-7461.2014.05.03
文献标志码:
A
摘要:
 露水量对微观尺度气象因子的敏感性是决定露水能否形成及露水量大小的关键。为研究半干旱区气象因子对梨枣树结露的影响，以黄土半干旱区2年生梨枣树为试验材料，对梨枣树冠层内的露水量以及影响因子：距地表2 m高处风速μ、冠层相对湿度RH、冠层温度T、冠层温度露点差DPD、冠层饱和差VPD、土壤5 cm处的温度T5进行了同步监测，并利用通径分析法在分和小时尺度上对相关因素进行了敏感性分析。结果表明，不同时间尺度条件下，不同因子对露水量敏感性存在差异。在分尺度上，敏感性显著的气象因子有4个，敏感性大小次序为：T>VPD>DPD>RH。在时尺度上，敏感性显著的气象因子有5个，敏感性大小次序为：RH>VPD>μ>DPD>T。无论在分还是时尺度上VPD对露水量具有较强的敏感性，其敏感性不会随时间尺度的变化而发生变化，其他因子的尺度效应会因时间尺度的变化而发生变化。
Abstract:
 Sensitivity of meteorological factors to dew in micro-scale is the key to determine not only whether dew can form or not, but also dew amount. In order to clarify the influences of meteorological factors to dew condensation on the pear-jujube, 2-year-old pear jujube trees growing in the loess plateau were used in this study, in addition, dew amount, relative humidity (RH), temperature (T), dew point-air temperature depression (DPD) and vapor pressure deficit (VPD) in the canopy, along with wind speed (μ, 2 m from the ground) and soil temperature (T5, in the depth of 5 cm) were monitored synchronously. The results of path analysis on relevant factors in hours and minutes indicated that differences existed in sensitivities of different factors to dew amount in different time scales. In the scale of minutes, the order of significant factors in sensitivity was T > VPD > DPD > RH, while, in the scale of hours, it was RH > VPD > μ > DPD > T. For VPD and DPD, no matter in the scale of minutes or hours, they had weak sensitivities on dew amount. But for other factors, there were obvious scale effect, so pushing up or pushing down simply between scales are unreasonable.

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备注/Memo

备注/Memo:
 收稿日期：2013-11-26修回日期：2014-01-08
基金项目：西北生态脆弱区经济作物高效用水关键技术研究与示范（2011BAD29B04）; 西北干旱半干旱农业区大学农业科技服务模式关键技术集成与示范（2013BAD20B03）;山地红枣旱作优质高效栽培技术集成与示范（2013KTZB02-03-02）。
作者简介：高志永，男，硕士研究生，研究方向：节水灌溉新技术。E-mail: gaozhiyongstudent@gmail.com
*通信作者：汪有科，男，研究员，博士生导师，研究方向：水土保持与节水灌溉。E-mail:gjzwyk@vip.sina.com
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