Oil Fields In The Industrial And Mining Areas Damaged Land Reclamation Suitability Evaluation Research

With the rapid development of urbanization and industrialization in China,mineral resources have been largely exploited,which has caused a series of environmental problems such as land damage and land pollution.And such damage and pollution have seriously affected the sustainable use of land.So the reclamation and management of damaged land demands immediate attention.The reclamation of mining land can not only effectively solve the ecological and environmental problems,but also promotes the development of regional economic and social environment.For instance,Daqing is one of the most important oil and petrochemical production bases in China.For more than 50 years,with the development of petroleum and petrochemical industry as well as the progress of urban construction.Although the production and construction activities have created significant economic benefits,plenty of land resources has been destroyed at the same time.Vegetation degradation,land desertification,land salinization and many other issues also seriously affecting the regional natural ecological environment.The land reclamation in Daqing can improve the utilization of land resources more efficiently and raise the quality of the ecological environment.Moreover,it provides the basis for promoting the construction of reclamation in the oilfield mining area,and building an ecological civilization living environment.Currently,the construction of land reclamation assessment and reclamation model mainly focuses on the research of abandoned mining area and coal mining subsidence areas.And the existing research is more study the suitability evaluation and reclamation benefits.So the study that focus on Land Reclamation Mode in Oilfield Mining Area seem not enough.Base on the land reclamation theory,sustainable development theory,ecological restoration and reconstruction theory,land ecological security theory and intensive use intensive theory.This paper uses the 3S technology to study the types,amount and the degree of damage of land that been abused.Building a comprehensive evaluation index system of damaged land,evaluating the comprehensive quality of damaged land,analyzing the appropriate direction and mode of land reclamation.The main contents and outcomes of the paper are following:(1)Types and Characteristics of Damaged Land in Daqing Oilfield.The author carried out damaged land survey on Longfeng District,Ranghulu District,Saertu District,Datong District and Honggang District of Daqing through remote sensing image interpretation and on-site reconnaissance.After analyzing the collected data,the three types of damaged land in oil mining and industrial areas including damage,pressure,pollution have been defined.The total number of damaged land is 2447 pieces,and the area of damaged land is 20262.02 hectares.Among them,the destroyed land damaged 2388,an area of destroyed land is 19799.43 hectares,accounting for 97.72%of the damaged land area;the pressure land damaged 57,an area of pressure land is 461.02 hectares,accounting for 2.77%of the damaged land area;the pollution land damage 2,an area of pollution land is 1.57 hectares,accounting for 0.01%.The overall characteristics of the damaged land in the oilfield mining area are manifested in types of damage are various,distribution widely,area are large,a high degree of damage and high difficulty in reclamation.(2)Construction of evaluation index system of land reclamation suitability for damaged land in the industrial area.Based on the research status of land acquisition,characteristics and damage degree of coal mine industrial and mining area,this paper construct the evaluation index of land reclamation in combination with domestic and foreign coal mine land reclamation suitability evaluation index.On this basis,the evaluation index of land reclamation suitability of oilfield mining area System from five reclamation directions including farming,forest,animal husbandry,fishing,and build.Select the evaluation indicators to determine the evaluation level and score criteria respectively.(3)Evaluation of land reclamation suitability and reclamation pattern of damaged land in industrial and mining area.Based on the minimum limiting factor method and the comprehensive index model method to evaluate the level of land reclamation suitability of oilfield mining area.Then the most suitable direction and suitable grade of damaged land reclamation in industrial and mining area are determined according to the final evaluation result.On the basis of Daqing Oilfield ecological reconstruction principle,this paper puts forward seven types of reclamation model.At the end,this paper proposes the optimal land allocation plans base on various degrees of damage,pressure,pollution to make sure the land resource can be utilized efficiently.