To achieve the quantitative analysis of ecological benefits in the balance of farmland requisition-compensation,a relational model between ecological service indicators and land use indexes under different farming methods was constructed based on land use indexes and other factors,and applied to the ecological damage-benefit analysis of farmland requisition-compensation.The results show that food production,gas regulation,nutrient cycling,and water conservation gradually decrease with the increase of national utilization,while soil conservation gradually increased with the increase of national land use;Food production is positively correlated with gas regulation,nutrient cycling,and water conservation,but negatively correlated with soil conservation.There is a positive correlation between land use indexes and grain output,and a negative correlation with national land use level.By analyzing the relationship between land use index,food output,and ecological service quality,a model of the relational model between ecological service indicators and land use indexes under different cultivated land use methods is constructed.Through this model,the balance of cultivated land requisition and compensation in a specific project is calculated and analyzed,and the conclusion is drawn that the project cannot achieve ecological requisition-compensation balance.
关键词
耕地占补平衡/土地利用指数/生态服务/关系模型/生态损益
Key words
cultivated land requisition-compensation balance/land use indexes/ecological services/relational model/ecological damage and benefit
维普
万方数据