Development of artificially induced biological soil crusts in fields and their effects on top soil
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- 作者：Yiwen Wu ; Benqiang Rao ; Peipei Wu ; Yongding Liu ; Genbao Li ; Dunhai Li
- 关键词：Bioremediation ; Biological soil crusts growth ; Algal species ; Nitrogen ; Phosphorus
- 刊名：Plant and Soil
- 出版年：2013
- 出版时间：September 2013
- 年：2013
- 卷：370
- 期：1-2
- 页码：115-124
- 全文大小：512KB
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51. Zhu YD, Cai QG, Hu X, Zhang GY (2004) Effects of soil physical and chemical properties on soil crusting. Acta Pedologica Sinica 41(1):13-9 - 作者单位：Yiwen Wu (1) (2)
Benqiang Rao (1) (3)
Peipei Wu (1) (2)
Yongding Liu (1)
Genbao Li (1)
Dunhai Li (1)
1. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 7# Donghu South Road, Wuchang District, Wuhan, 430072, People’s Republic of China
2. University of Chinese Academy of Science, Beijing, 100049, People’s Republic of China
3. College of Life Sciences, Xinyang Normal University, Xinyang, 464000, People’s Republic of China - ISSN：1573-5036
文摘
Aims Biological soil crusts (BSCs) could improve severe environment ecological conditions by increasing soil moisture, soil nitrogen concentration, and so on. In order to control desertification and recover the destroyed soil fertility utilizing a new means using BSCs, the soil surface was artificially inoculated with Microcoleus vaginatus and Scytonema javanicum. Relationships between the development of the artificially induced biological soil crusts and the distribution and dynamic changes of nitrogen and phosphorus in the soil crusts have been analyzed. Methods Crusts of different ages were investigated by measuring soil physical and chemical factors, such as moisture, pH, total and available N content, and total and available P, which were correlated with the depths of the crusts. Results This study found that the types of color, shape, and species components of the algal crusts increased with crust development. Soil moisture, total N, available N, and available P increased gradually with crust growth. Soil with crusts was wetter than the controlled naked sandy soil, and a significant correlation was observed between biomass and total nitrogen (r--.946, P--.015). Soil pH was lower than that of control. The scytonemin on the soil surface was exceptionally higher than the other pigments, and all the pigments were mainly distributed at the soil surface level. Though the crusts were mainly distributed on soil surface, the available P was mainly stored below the crust layer. Conclusions Pearson correlation tests indicated that artificially inoculated biological crusts could improve soil fertility and micro-environment of the top soil: The development of artificially induced BSCs was very well, and this was favorable to inducing the following crust succession.