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学科主题: Biology
题名: Non-rainfall water sources in the topsoil and their changes during formation of man-made algal crusts at the eastern edge of Qubqi Desert, Inner Mongolia
作者: Lan ShuBin1, 2; Hu ChunXiang1; Rao BenQiang1, 2; Wu Li1, 2; Zhang DeLu1, 2; Liu YongDing1
通讯作者: Hu, CX, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: desert algae ; biological soil crusts ; water uptake ; upper soil layer
刊名: SCIENCE CHINA-LIFE SCIENCES
发表日期: 2010-09-01
DOI: 10.1007/s11427-010-4049-6
卷: 53, 期:9, 页:1135-1141
收录类别: SCI
文章类型: Article
部门归属: [Lan ShuBin; Hu ChunXiang; Rao BenQiang; Wu Li; Zhang DeLu; Liu YongDing] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Lan ShuBin; Rao BenQiang; Wu Li; Zhang DeLu] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [30770395, 30870470]; Wuhan Science and Technology Bureau ; Inner Mongolia Planning Committee on high-tech industrialization
类目[WOS]: Biology
研究领域[WOS]: Life Sciences & Biomedicine - Other Topics
摘要: In arid and semiarid areas, water uptake (non-rainfall water) serves as an important water source for plants, biological soil crusts, insects and small animals. In this study, a measurement program was undertaken to investigate water uptake and its changes during formation of man-made algal crusts in the Qubqi Desert. In the study region, water uptake from the atmosphere accounted for 25.07%-39.83% of the total water uptake, and was mainly taken up by a water vapor adsorption mechanism; the proportion of water uptake from the soil substrate was much higher (60.17%-74.93%). The formation of crusts promoted water uptake, but the increased uptake did not occur immediately after inoculation or crusts formation. The water taken up from the atmosphere increased significantly from day 15 after inoculation, and the soil water content was markedly enhanced from day 20 after inoculation. It is considered that the growth of algal filaments and their secretions were the main factors increasing the amount of water uptake and water content in the crusts, and these variables increased even during dry periods when some algae are likely to have died.
英文摘要: In arid and semiarid areas, water uptake (non-rainfall water) serves as an important water source for plants, biological soil crusts, insects and small animals. In this study, a measurement program was undertaken to investigate water uptake and its changes during formation of man-made algal crusts in the Qubqi Desert. In the study region, water uptake from the atmosphere accounted for 25.07%-39.83% of the total water uptake, and was mainly taken up by a water vapor adsorption mechanism; the proportion of water uptake from the soil substrate was much higher (60.17%-74.93%). The formation of crusts promoted water uptake, but the increased uptake did not occur immediately after inoculation or crusts formation. The water taken up from the atmosphere increased significantly from day 15 after inoculation, and the soil water content was markedly enhanced from day 20 after inoculation. It is considered that the growth of algal filaments and their secretions were the main factors increasing the amount of water uptake and water content in the crusts, and these variables increased even during dry periods when some algae are likely to have died.
关键词[WOS]: NEGEV-DESERT ; MICROBIOTIC CRUSTS ; DEW DEPOSITION ; SOIL ALGAE ; FOG ; STABILIZATION ; ISRAEL ; CHINA ; AREA
语种: 英语
WOS记录号: WOS:000282479500011
ISSN号: 1674-7305
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/13765
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

Recommended Citation:
Lan ShuBin; Hu ChunXiang; Rao BenQiang; Wu Li; Zhang DeLu; Liu YongDing.Non-rainfall water sources in the topsoil and their changes during formation of man-made algal crusts at the eastern edge of Qubqi Desert, Inner Mongolia,SCIENCE CHINA-LIFE SCIENCES,2010,53(9):1135-1141
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