Research On The Land Consolidation Modes In Ecologically Vulnerable Areas From The Perspective Of Poverty Alleviation

With the rapid economic development and people's predatory demand,the problem of ecological environment in China has become increasingly serious.More and more areas of the ecosystem have been destroyed in various degrees.Ecologically fragile areas have gradually attracted the attention of scholars.Due to the constraints and impacts between ecological environment and economic development,ecologically fragile areas are often accompanied by poverty problem.The extremely fragile ecological areas in China contain 95% of the absolute poverty population.As an important resource and basic guarantee for human production and life,land is also one of the carriers of ecology.Whether it is to enhance the ecological carrying capacity by improving the ecological environment,or to promote economic development by lightening poverty social problem,their key methods and approaches will eventually be implemented on the "land".It can be said that the real cause of the fragile ecological environment is the contradiction between people and land that fails to be handled harmoniously.The uncoordinated man-land relationship is also the key of ecological deterioration's vicious circle and poverty.Land remediation is one of the effective ways to utilize and control land scientifically.It has the function of constructing ecological civilization,alleviating man-land contradiction,coordinating ecological and economic development.Therefore,it has great theoretical and practical significance to investigate the land remediation modes in ecologically vulnerable areas,especially from the perspective of poverty alleviation.Based on the study of the land remediation modes and related theories,this study systematically analyzed the land using status in the researching area,summarized the problems in land usage,and evaluated the land remediation potential.Through the analytic hierarchy process and grey correlation analysis,the current situation of land ecology will be evaluated from natural and social economical two perspectives.Finally,based on the current status of land usage and land remediation potential,we take the ecological status of the land as a constraint and poverty alleviation as the goal,and zone the land consolidating area.Then,the land remediation modes were established.The main conclusions are as follows:1.The land using types in Tongyu County are mainly cultivated land,woodland and grassland.Between 2009 and 2015,the cultivated land increased by 0.53% and the construction land increased by 1.61%,while the woodland,grassland and wetland decreased by 0.08%,0.79% and 0.88%,respectively.Although the saline-alkali land reduced by 1.28%,it still accounted for 16.44% of the total land area.There is still large space to improving on farmland quality,and the potential of agricultural land remediation is decreasing trend from west to east.2.The ecological vulnerability of land in Tongyu County is concentrated on the intermediate level.Due to the abundant woodland,grassland and wetland resources in the west and the concentrated distribution of saline-alkali soil in the east,the land ecological conditions in the west are significantly better than those in the east.Tongyu county population density is oversize,presenting the high overall land ecological pressure.Coupled with the uneven distribution of natural resources and the concentration distribution of poverty population,the land ecological pressure of east-central was significantly higher than the west.3.Combining the evaluation results of the land ecological status and the poverty conditions,on the basis of spatial differentiation of land use status and remediation potential,the land remediation modes were constructed.Using hierarchical clustering method and layer superposition method,from the perspective of poverty alleviation,the county is divided into three land remediation areas: ecological restoration and governance area,characteristic industries and basic farmland construction area,and ecological protection and cultivated land quality improvement area.4.Constructed the land remediation modes: The ecological restoration and governance area should improve agricultural infrastructure and the salinization of land,encourage fencing,ecological restoration and population migration.The characteristic industries and basic farmland construction area should focus on the construction of high-standard basic farmland,the development of characteristic industries and special agricultural products,and the raising of the poverty alleviation capacity.The ecological protection and cultivated land quality improvement area should prevent grassland degradation,strengthen wetland ecology,improve the quality of cultivated land,and vigorously develop tourism and tourism products.