Preliminary Study On The Ecological Protection And Restoration Project Of Shenwo Reservoir Based On The Concept Of Mountain-river-forest-farmland-lake-grass Community

Relying on"Mountain-River-Forest-Farmland-Lake-Grass System is a Community of Life"to carry out ecological protection and restoration is a key measure to promote the construction of ecological civilization,and it is also an important basis for my country’s current implementation of ecological protection and restoration projects.The Shenwo Reservoir is located in the middle of the Taizi River Basin.Over the years,industrial and agricultural production activities have caused serious deterioration of water quality in the reservoir area and severely restricted the use of water resources.This study takes the Shenwo Reservoir and the rivers that affect its water quality and quantity,the surrounding mines of different scales,and basic farmland as the research area,and basically covers the ecological elements of"mountains,water,forests,fields,and lakes".Therefore,based on the common concept of life in mountains,rivers,forests,fields,lakes and grasses,it is very necessary to take ecological protection and restoration projects for the Shenwo Reservoir and its surrounding main affected areas.Qualitative and quantitative methods are used to identify the main resource and environmental factors in the region:the water quality of Taizi River,Xihe River,and Lanhe River is mainly affected by the concentration of ammonia nitrogen;the water quality of Shenwo Reservoir is mainly affected by the concentration of total nitrogen,and its pollution status is heavy pollution,The nutrient status is mesotrophic,with serious siltation in the reservoir area and heavy metal pollution such as Cd,Cu,As,Zn,and Ni in the sediment;part of the farmland is polluted,the water holding rate of the farmland is low,and the variety of crops is single;soil erosion,water and soil loss The situation is not optimistic.The soil is polluted by heavy metals such as mercury and arsenic.Hazelnut shrubs and Mongolian oak shrubs constitute the main part of the forest.With the help of the InVEST model,the carbon storage service,soil conservation service,habitat quality service,and water quality purification service of the study area are evaluated.The results show that the study area has a certain carbon sequestration capacity,the total carbon storage is about 13.72×10~6t,the average carbon storage is about 102.83 t/hm~2;The soil conservation ability is poor,the soil erosion is more serious,and the total soil conservation is about 15.96×10~6t,the average soil conservation amount is about 119.62 t/hm~2;The overall quality of the habitat is good,and the habitat quality index is relatively large,indicating that the ecosystem is relatively healthy and stable,and has a certain resistance to threat sources;Water quality purification to be improved,the total nitrogen output is about38.27×10~4kg;According to the recognition results of the main resources and environmental elements in the area and the evaluation results of the ecosystem service functions,four ecological restoration protection units are divided,namely the"river"ecological protection and restoration unit,the"reservoir"ecological protection and restoration unit,and the"farmland"ecological protection and restoration unit.Unit,"Mountain and Forest"Ecological Protection and Restoration Unit.The overall goals of the ecological protection and restoration project and the specific goals of each restoration unit were clarified,put forward the ecological protection and restoration project plan.