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中国沙漠  2019, Vol. 39 Issue (3): 77-86    DOI: 10.7522/j.issn.1000-694X.2018.00049
    
高寒沙区吸湿凝结水凝结过程与温湿度的关系
成龙1, 贾晓红1, 吴波1, 李元寿3, 赵雪彬2, 周虹1
1. 中国林业科学研究院 荒漠化研究所, 北京 100091;
2. 中国林业科学研究院 青海共和荒漠生态系统国家定位观测研究站, 北京 100091;
3. 中国气象科学研究院, 北京 100081
Relationship between the Condensation Process of Hygroscopic and Condensate Water and the Air & Soil Humiture in Alpine Sandy Lands
Cheng Long1, Jia Xiaohong1, Wu Bo1, Li Yuanshou3, Zhao Xuebin2, Zhou Hong1
1. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China;
2. inghai Gonghe Desert Ecosystem Research Station, Chinese Academy of Forestry, Beijing 100091, China;
3. Chinese Academy of Meteorological Sciences, Beijing 100081, China
 全文: PDF(7404 KB)  
摘要: 吸湿凝结水作为干旱半干旱地区除降雨外主要的水分来源,具有十分重要的生态水文学意义。以青海共和盆地高寒沙区1997年植被恢复区生物土壤结皮吸湿凝结水为研究对象,2018年5—9月采用自制微渗仪观测吸湿凝结水量,同时观测近地层空气温湿度和土壤温湿度。结果表明:观测期间,不同类型结皮吸湿凝结水量存在差异,表现为苔藓结皮>藻类结皮>物理结皮>流沙,且差异性与观测时间无关;吸湿凝结水量与近地层空气湿度正相关,与近地层空气温度、土壤温度湿度负相关,且相关性与地表类型无关;吸湿水凝结过程主要受近地层空气温湿度的影响,累积贡献率85.294%;生长季吸湿凝结水主要产生时间为19:00至次日07:00,期间凝结速率呈波动性变化;19:00—23:00吸湿凝结水凝结速率不断上升,且上升趋势与近地层空气温湿度无关;00:00—03:00吸湿凝结水凝结速率出现滞后效应,滞后于近地层空气温湿度变化1 h;04:00—07:00呈先升高后降低趋势,04:00出现该时间段凝结速率最低值,05:00出现该时间段凝结速率的最高值。
关键词: 高寒沙区吸湿凝结水空气温湿度土壤温湿度相关关系    
Abstract: Expect for the rainfall, hygroscopic and condensate water as the main source of moisture in arid and semi-arid regions, has great significance for eco-hydrology. In this experiment, the contents of hygroscopic and condensate water in biological soil crusts in alpine sandy artificial vegetation restoration area of Gonghe basin were set as the research object. We used micro-lysimeters to observe hygroscopic and condensate water in alpine sandy lands from May to September in 2018, recorded the change rule of air humiture and soil humiture in the meantime. The results showed that hygroscopic and condensate water in different types of biological soil crust were different: moss crusts > algae crusts > physical crusts > sand, and the difference was not related to the date. The relationship between near-surface air humidity and the contents of hygroscopic and condensate water was positively correlated. And the relationship between near-surface air temperature, soil temperature, soil humidity and the contents of hygroscopic and condensate water was negative, and the correlation was not related to surface types. The main component analysis showed that the condensation process of hygroscopic and condensate water was mainly affected by near-surface air temperature and humidity, and the cumulative contribution rate was 85.294%. The main generation time of hygroscopic and condensate water in growing season was 19 o'clock to 7 o'clock the next day, during this period, the changes of condensation speed was volatile. The speed of hygroscopic and condensate water rose constantly at 19 o'clock to 23 o'clock, and the rising trend was unconnected with near-surface air temperature and humidity. At 0 o'clock to 3 o'clock, the speed of hygroscopic and condensate water appeared hysteretic effect, and it lagged one hour behind the change in atmospheric humiture. The tendency to go up and down at 4 o'clock to 7 o'clock, and the peak speed of hygroscopic and condensate water appeared at 5 o'clock, the lowest speed of hygroscopic and condensate water appeared at 4 o'clock.
Key words: alpine sandy lands    hygroscopic and condensate water    air humiture    soil humiture    correlation
收稿日期: 2017-12-27 出版日期: 2019-06-10
:  S152.7  
基金资助: 国家重点研发计划项目(2016YFC0500801);国家自然科学基金项目(41471096,41371093);中央级公益性科研院所基本科研业务费项目(CAFYBB2016ZD010)
通讯作者: 贾晓红(E-mail:jiaxiaohong@caf.ac.cn)     E-mail: jiaxiaohong@caf.ac.cn
作者简介: 成龙(1993-),男,河北定州人,硕士研究生,主要从事荒漠生态学研究。E-mail:784754468@qq.com
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引用本文:

成龙, 贾晓红, 吴波, 李元寿, 赵雪彬, 周虹. 高寒沙区吸湿凝结水凝结过程与温湿度的关系[J]. 中国沙漠, 2019, 39(3): 77-86.

Cheng Long, Jia Xiaohong, Wu Bo, Li Yuanshou, Zhao Xuebin, Zhou Hong. Relationship between the Condensation Process of Hygroscopic and Condensate Water and the Air & Soil Humiture in Alpine Sandy Lands. Journal of Desert Research, 2019, 39(3): 77-86.

链接本文:

http://www.desert.ac.cn/CN/10.7522/j.issn.1000-694X.2018.00049        http://www.desert.ac.cn/CN/Y2019/V39/I3/77

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