干旱区生态环境知识资源中心(Arid): 库布齐沙漠不同发育类型人工结皮对露水凝结作用的比较研究

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	库布齐沙漠不同发育类型人工结皮对露水凝结作用的比较研究
其他题名	Comparison Studies on Dew Condensation of Different Developmental Artificial Crusts in Hopq Desert
	饶本强; 吴易雯; 李华; 李敦海; 刘永定
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2011
卷号	25 期号:6 页码:159-164
中文摘要	露水的形成是干旱、半干旱地区生态系统中重要的环境因子。以库布齐沙漠不同发育类型的人工结皮为研究对象，通过每天野外跟踪观测人工结皮的露水凝结量，比较人工结皮露水凝结量的大小及其凝结能力的差异性。试验以人工蓝藻结皮(ACC)、人工藻结皮(AAC)、人工苔藓结皮(AMC)以及自然苔藓结皮(NMC)和流沙(SS)为材料，并以绒布一平板露水测定法(CPM)为参照，试验时间为42d。结果表明CPM法测定的日平均露水凝结量为0.02~0.35mm,ACC露水凝结量为0.012~0.191mm,AAC为0.032~0.230mm,AMC为0.048~0.274mm,NMC为0.056~0.304mm,SS为0.003~0.083mm。露水凝结量随结皮的发育状况而存在显著差异，露水凝结量大小依次为NMC>AMC>AAC>ACC>SS。结果还发现，人工结皮的形成明显促进了荒漠地表对露水的吸收和保持，结皮能够比沙表面凝结更多的露水，且结皮的露水干化过程比沙表面更慢。推测结皮藻丝体的发育及其胞外分泌物是结皮凝结较多露水的重要原因，同时依赖于结皮表面的微气候环境。本研究揭示了露水在维系结皮生存中的生态学意义，表明人工结皮具有较好的水土保持功能，同时有利于更好地理解生物结皮对露水的凝结机制与吸收利用情况，并为荒漠化地区有限水源条件下人工结皮利用露水等非降雨型水分进行野外生存提供重要的理论支持和试验依据。
英文摘要	Dew is one of important environmental factors for desert ecological system in semiarid and arid regions. In this study, the artificial crusts were selected for experimental objects to compare differences of dew condensation amounts between different artificial crusts by means of daily detection for dew condensation on artificial crust surfaces. Concerning the experiment, artificial cyanobacterial crusts (ACC), artificial algal crusts (AAC),artificial moss crusts (AMC),and natural moss crusts (NMC) as well as shifting sands (SS) were selected as experimental materials, respectively. The experiment period was 42 days. Moreover, the cloth-plate method (CPM) was used for comparing dew condensation effects among the crusts. Results showed that the average daily dew amount as measured by CPM was 0.02~0.35 mm and the dew amount of ACC was 0.012~0.191 mm. the other dew amounts were 0.032~0.230 mm, 0.048~0.274 mm, and 0.056~0.304 mm as well as 0.003~0.083 mm occurring on AAC, AMC, NMC and SS, respectively. It was found that there were obvious differences following developmental extents of artificial crusts, and the order of dew amounts in artificial crusts was as follows: NMC>AMC>AAC>ACC>SS. In addition, it was indicated that the formation and development of artificial crusts could accelerate dew deposition and dew assimilation, and the crusts could condense and retain more dew than sand. At the same time,there was more slow drying process of dew from the crusts than that from sand. The reason that the artificial crusts could condense abundant dew may depend on rich algal filaments, extracellular polymers and microclimatic characteristics as well as soil properties within the crusts. It might be necessary for us to fully understanding the mechanisms of dew condensation and assimilation on surfaces of the artificial crusts, and to further disclose the important ecological sense of dew in survival of the crusts. Furthermore, the research verified that the artificial crusts had good soil and water conservation functions, and also provided some experimental and theoretical bases for soundly evaluate the crust’s potential application in fighting desertification by means of using non-rainfall water sources from dew.
中文关键词	库布齐沙漠 ; 人工结皮 ; 露水凝结 ; 非降雨型水分 ; 水土保持
英文关键词	Hopq desert artificial crusts dew condensation non-rainfall water sources soil and water conservation
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:4389929
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227093
作者单位	饶本强, 信阳师范学院生命科学学院, 信阳, 河南 464000, 中国.; 吴易雯, 中国科学院水生生物研究所, 淡水生态与生物技术国家重点实验室, 武汉, 湖北 430072, 中国.; 李华, 中国科学院水生生物研究所, 淡水生态与生物技术国家重点实验室, 武汉, 湖北 430072, 中国.; 李敦海, 中国科学院水生生物研究所, 淡水生态与生物技术国家重点实验室, 武汉, 湖北 430072, 中国.; 刘永定, 中国科学院研究生院, 淡水生态与生物技术国家重点实验室, 北京 100049, 中国.
推荐引用方式 GB/T 7714	饶本强,吴易雯,李华,等. 库布齐沙漠不同发育类型人工结皮对露水凝结作用的比较研究[J],2011,25(6):159-164.
APA	饶本强,吴易雯,李华,李敦海,&刘永定.(2011).库布齐沙漠不同发育类型人工结皮对露水凝结作用的比较研究.水土保持学报,25(6),159-164.
MLA	饶本强,et al."库布齐沙漠不同发育类型人工结皮对露水凝结作用的比较研究".水土保持学报 25.6(2011):159-164.