Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s00374-010-0521-5 |
Effects of inoculated Microcoleus vaginatus on the structure and function of biological soil crusts of desert | |
Zheng, Yunpu1,2; Xu, Ming1,3; Zhao, Jiancheng4; Bei, Shuqing5; Hao, Lihua4 | |
通讯作者 | Xu, Ming |
来源期刊 | BIOLOGY AND FERTILITY OF SOILS |
ISSN | 0178-2762 |
EISSN | 1432-0789 |
出版年 | 2011 |
卷号 | 47期号:4页码:473-480 |
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. |
英文关键词 | Microcoleus vaginatus Gom. Biological soil crusts (BSCs) Gurbantunggut Desert Northwestern China |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000289559800012 |
WOS关键词 | DIFFERENT SUCCESSIONAL STAGES ; GURBANTUNGGUT DESERT ; COLORADO PLATEAU ; NITROGEN-FIXATION ; ALGAL CRUSTS ; CYANOBACTERIAL INOCULATION ; MICROBIAL-POPULATIONS ; ECOSYSTEM FUNCTION ; HEATED SOILS ; BIODIVERSITY |
WOS类目 | Soil Science |
WOS研究方向 | Agriculture |
来源机构 | 中国科学院地理科学与资源研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/167395 |
作者单位 | 1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; 3.Rutgers State Univ, Ctr Remote Sensing & Spatial Anal, Dept Ecol Evolut & Nat Resources, New Brunswick, NJ 08901 USA; 4.Hebei Normal Univ, Coll Life Sci, Shijiazhuang 050016, Peoples R China; 5.Langfang Normal Univ, Coll Life Sci, Langfang 065000, Hebei, Peoples R China |
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]. 中国科学院地理科学与资源研究所,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. |
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