Key technology design of ecological ditch and its application in modern agriculture
Ditch is one of the most important elements in modern agriculture, which has a great impact on agricultural production and ecological environment. Traditional ditches mainly focus on convenient traffic, economic and engineering cost, irrigation and drainage, but neglect the environment ecosystem.In...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2017-05-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2016.06.251 |
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| Summary: | Ditch is one of the most important elements in modern agriculture, which has a great impact on agricultural production and ecological environment. Traditional ditches mainly focus on convenient traffic, economic and engineering cost, irrigation and drainage, but neglect the environment ecosystem.In order to coordinate the relationship of ecology, economy and sustainability, and realize the win-win situation of water conservancy function and ecological function, proposing a new ecological detailed ditch is of great importance. Based on the research materials and experimental results in domestic and overseas, an ecological canal project was constructed in Lushan County of Sichuan Province with combination of the section form, lining method, slope protection style, aquatic plant, ecological landscape, etc. This article puts forward suitable ecological detailed design principles, key technologies, and actual ditch design reference styles. With the consideration of functional requirements, such as production, life, ecology, landscape, etc., some advanced, practical and new concepts with great significance were proposed, which can be used in practical engineering demonstration. Comprehensive evaluation of the ditch ecological effect showed that the final score of the ecological ditch treatment project was 84.65, and the grade was good, better than the ordinary ditch treatment project (the final score was 77.90, and the grade was middle). Although the ecological ditch treatment project had no significant difference in the economic and operational management as compared with the conventional ditch treatment project, it had good effect on the removal of pollutants, water recycling and compliance rate. In conclusion, the ecological design of engineering ditch has good ecology, economy and sustainability. The following main achievements were obtained:1) Ecology: Slope and escape lanes were provided to facilitate the escapement of animals falling into the ditches; aquatic plants in the ditches can remove pollutants such as nitrogen, phosphorus and pesticides in the water body, and purify water quality; canal plants can slow down the water flow rate and reduce the temperature changes within the canal to promote crop growth; ecological corridor was set to strengthen the exchange of farmland and protect the integrity; water level monitoring equipment was applied to improve the water utilization at a large extent.2) Economy: The fine design of each section greatly reduced the relevant project cost; aquatic plants purified water quality and reduced the cost of sewage treatment.3) Sustainability: This project integrated a series of detailed designs, ensuring the function of traditional ditch irrigation and drainage, and reducing the impact on the environment, which maintained the original ecology of farmland system and improved the use of ditch sustainability. |
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| ISSN: | 1008-9209 2097-5155 |