Effects of inoculated Microcoleus vaginatus on the structure and function of biological soil crusts of desert
文献类型：期刊论文
| 作者 | Zheng Yunpu ; Xu Ming ; Zhao Jiancheng ; Bei Shuqing ; Hao Lihua |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2011 |
| 卷号 | 47期号:4页码:473-480 |
| 关键词 | DIFFERENT SUCCESSIONAL STAGES GURBANTUNGGUT DESERT COLORADO PLATEAU NORTHWESTERN CHINA NITROGEN-FIXATION ALGAL CRUSTS CYANOBACTERIAL INOCULATION MICROBIAL-POPULATIONS ECOSYSTEM FUNCTION TROPICAL FORESTS |
| 通讯作者 | Xu Ming |
| 合作状况 | 其它 |
| 英文摘要 | Microcoleus vaginatus Gom., the dominant species in biological soil crusts (BSCs) in desert regions, plays a significant role in maintaining the BSC structure and function. The BSC quality is commonly assessed by the chlorophyll a content, thickness, and compressive strength. Here, we have studied the effect of different proportions of M. vaginatus, collected from the Gurbantunggut Desert in northwestern China, on the BSC structure and function under laboratory conditions. We found that when M. vaginatus was absent in the BSC, the BSC coverage, quantified by the percentage of BSC area to total land surface area, was low with a chlorophyll a content of 4.77 x 10(-2) mg g(-1) dry soil, a thickness of 0.86 mm, and a compressive strength of 12.21 Pa. By increasing the percentage of M. vaginatus in the BSC, the BSC coverage, chlorophyll a content, crust thickness, and compressive strength all significantly increased (P < 0.01). The maximum chlorophyll a content (13.12 mg g(-1)dry soil), the highest crust thickness, and the compressive strength (1.48 mm and 36.60 Pa, respectively) occurred when the percentage of inoculated M. vaginatus reached 80% with a complex network of filaments under scanning electron microscope. The BSC quality indicated by the above variables, however, declined when the BSC was composed of pure M. vaginatus (monoculture). In addition, we found that secretion of filaments and polymer, which stick sands together in the BSC, increased remarkably with the increase of the dominant species until the percentage of M. vaginatus reached 80%. Our results suggest that not only the dominant species but also the accompanying taxa are critical for maintaining the structure and functions of the BSC and thus the stability of the BSC ecosystems. |
| 收录类别 | SCI |
| 资助信息 | Natural Science Foundation of China 31070184 30770411;Natural Science Foundation of Hebei Province 2008000158;Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2011-05-04 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/2315]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Zheng Yunpu,Xu Ming,Zhao Jiancheng,et al. Effects of inoculated Microcoleus vaginatus on the structure and function of biological soil crusts of desert[J]. BIOLOGY AND FERTILITY OF SOILS,2011,47(4):473-480. |
| APA | Zheng Yunpu,Xu Ming,Zhao Jiancheng,Bei Shuqing,&Hao Lihua.(2011).Effects of inoculated Microcoleus vaginatus on the structure and function of biological soil crusts of desert.BIOLOGY AND FERTILITY OF SOILS,47(4),473-480. |
| MLA | Zheng Yunpu,et al."Effects of inoculated Microcoleus vaginatus on the structure and function of biological soil crusts of desert".BIOLOGY AND FERTILITY OF SOILS 47.4(2011):473-480. |
入库方式： OAI收割
来源：地理科学与资源研究所
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