| Mechanism of biocrusts boosting and utilizing non-rainfall water in Hobq Desert of China | |
Ouyang, Hailong1,2 ; Lan, Shubin1; Yang, Haijian1; Hu, Chunxiang1
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| Corresponding Author | Hu, Chunxiang(cxhu@ihb.ac.cn) |
| 2017-11-01 | |
| Source Publication | APPLIED SOIL ECOLOGY
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| ISSN | 0929-1393 |
| Volume | 120Pages:70-80 |
| Abstract | Non-rainfall water (NRW), as the most frequent water source of drylands, is significantly boosted by biocrusts. However, the mechanism of biocrustal promotion and utilization of NRW have been little studied. In this paper, the NRW accumulation patterns, photosynthetic activities and CO2 exchange of different biocrusts (2 cyanobacteria crusts-ACs, 1 cyanolichen crust-LC1, 1 green algae lichen crust-LC2, and 1 moss crust-MC) under NRW were studied through in situ mesocosm experiments in the Hobq Desert of China during the autumns of 2014 and 2015. Structural equation models showed that crustal properties feedback affected the degree of meteorological parameters on NRW accumulation, in which the effect of surface temperature gradually decreased with the development of biocrusts while that of subsoil temperature and light intensity increased. As for the sources, ca. 50% of NRW in ACs derived from subsoil but more than 78% from atmosphere in LCs and MC, and this pattern was obviously influenced by the recovery degree of photosynthetic activity. But the diel maximum NRW (NRWmax) were mainly determined by crust thickness, photoautotroph biomass and other properties. During NRW accumulation, the recovery of photosynthetic activity in ACs was the earliest, followed by that of LC2 and MC, LC1 never recovered. Whereas, the initial CO2 exchange of ACs and MC were often earlier than that of LC2, and the minimum diel NRWmax required by ACs, LC2, and MC to maintain carbon balance were ca. 0.08, 0.17, and 0.20 mm, respectively. Thus we proposed the application boundary of inoculation-based technology in drylands is the areas where the diel NRWmax exceed or equal 0.08 mm and carbon input under NRW last more than 2 h during NRW-abundant seasons. |
| Keyword | Non-rainfall water Accumulation patterns Sources Influencing factors Photosynthetic activities CO2 exchange |
| DOI | 10.1016/j.apsoil.2017.07.024 |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41573111] ; National Natural Science Foundation of China[31670456] ; National Natural Science Foundation of China[31300322] |
| WOS Research Area | Agriculture |
| WOS Subject | Soil Science |
| WOS ID | WOS:000411866600009 |
| WOS Keyword | BIOLOGICAL SOIL CRUSTS ; WESTERN NEGEV DESERT ; ARID DRAINAGE-BASIN ; DEW FORMATION ; CO2 EXCHANGE ; ALGAL CRUSTS ; SAND DUNES ; ENVIRONMENTAL-FACTORS ; SUCCESSIONAL STAGES ; MICROBIOTIC CRUSTS |
| Publisher | ELSEVIER SCIENCE BV |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/342005/31618 |
| Collection | 藻类生物学及应用研究中心_期刊论文 |
| Corresponding Author | Hu, Chunxiang |
| Affiliation | 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Ouyang, Hailong,Lan, Shubin,Yang, Haijian,et al. Mechanism of biocrusts boosting and utilizing non-rainfall water in Hobq Desert of China[J]. APPLIED SOIL ECOLOGY,2017,120:70-80. |
| APA | Ouyang, Hailong,Lan, Shubin,Yang, Haijian,&Hu, Chunxiang.(2017).Mechanism of biocrusts boosting and utilizing non-rainfall water in Hobq Desert of China.APPLIED SOIL ECOLOGY,120,70-80. |
| MLA | Ouyang, Hailong,et al."Mechanism of biocrusts boosting and utilizing non-rainfall water in Hobq Desert of China".APPLIED SOIL ECOLOGY 120(2017):70-80. |
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