Research and Practice of Mine Ecological Restoration Engineering Technology in Dry-hot Valley of Jinsha River
In order to explore the key technologies of mine ecological restoration and improve the quality of mine ecological environment,taking the ecological restoration project of mine site in Sichuan Pan-zhihua Sutie National Nature Reserve located in the dry-hot valley of Jinsha River as an example,relevant research and practice are carried out by using key technical measures such as improving site conditions,slope treatment,vegetation restoration,supporting irrigation facilities and later management and protection.The results show that:①198 624.40 m2 of characteristic ecological shelter forest is constructed,and the greening rate reaches 95.85%,forming a good vegetation landscape and geological landscape in mine area;②A three-dimensional restoration model with local priority and shrub-vine as the main part is formed.There are 25 kinds of newly planted vegetation,including 20 kinds of native and native tree species;③Six micro-artificial vegetation community types are constructed,showing a rich landscape level and species di-versity;④The survival rate of seedlings in the current year and the preservation rate of large seedlings are all above 90%,and the survival rate of large seedlings in 3 years reaches 95%.This practice effectively curbs the trend of rocky desertification in the region,improves the environmental capacity and ecological quality,builds an ecological barrier for the protection of main species and their habitats,and provides a certain refer-ence basis for the research and practice of mine ecological restoration technology in the region,especially in-side and outside the nature reserve.
ecological restoration of minesdry-hot valley of Jinsha Rivernature reservevegetation restoration
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