基于DPSIR-TOPSIS模型的寒地黑土区水土资源可持续利用评价研究

Evaluation of Sustainable Use of Soil and Water Resources in Cold Black Soil Region Based on DPSIR-TOPSIS Model

为帮助地方政府和相关机构做出合理有效的决策,促进水土资源的可持续利用和区域的可持续发展,以黑龙江省克山县为研究区,基于DPSIR模型和主成分分析法构建寒地黑土区水土资源可持续利用评价指标体系,利用TOPSIS方法测算2013-2021年克山县水土资源可持续利用水平。结果显示:(1)各子系统在2013-2021年间呈不同波动上升趋势,其中响应子系统对克山县水土资源可持续利用水平的贡献率最高。(2)克山县水土资源可持续利用水平在2013-2021年间呈波动上升趋势,可持续状态由弱可持续转为可持续。(3)制约克山县水土资源可持续利用水平的障碍因子主要为除涝面积、旱田耕地面积、水利支出、农村用电量和耕地保护面积。响应子系统对提升水土资源可持续利用水平有重要作用,地方政府可以增加水利支出,优化除涝设施,调整旱田耕地的管理方式以及加强耕地保护力度,从而进一步提升水土资源的可持续利用水平。

In order to help local governments and relevant institutions make reasonable and effective decisions and promote the sustainable utilization of soil and water resources and the sustainable development of the region,this paper takes Keshan County as the research area and constructs an evaluation index system for the sustainable utilization of soil and water resources in the cold black soil area based on the DPSIR model and principal component analysis.The TOPSIS method was applied to estimate the sustainable utilization level of water and land resources in Keshan County from 2013 to 2021.The results show that:①the subsystems exhibited fluctuating upward trends from 2013 to 2021,and the response subsystem has the highest contribution rate to the sustainable utilization level of water and land resources in Keshan County.②The sustainable utilization level of land and water resources in Keshan County showed a fluctuating upward trend from 2013 to 2021,and the sustainable state shifted from weak sustainability to sustainability.③The obstacle factors restricting the sustainable utilization level of water and land resources in Keshan County are mainly waterlogging control area,dry farmland area,water conservancy expenditure,rural electricity consumption and farmland protection area.The response subsystem plays an important role in improving the sustainable utilization level of water and soil resources.Local governments can increase water conservancy expenditure,optimize waterlogging control facilities,adjust the management mode of dryland farmland and strengthen the protection of farmland,so as to further improve the sustainable utilization level of water and land resources.