Study On Land Use Ecological Conflicts In The Three Gorges Reservoir Area Of Chongqing

Since the middle of the 20 th century,the global population and economy have grown rapidly.In order to meet the growing demand for food and for production and living land,human have increased the intensity of land resources development and utilization.The contradiction between the limited land resources and the infinity of human needs is intensifying,and the problem of land use conflicts is becoming more and more serious,which has seriously restricted the rational use of land resources and the sustainable development of mankind.Based on this,this paper takes the land use ecological conflicts as the study topic,takes the Three Gorges Reservoir Area of Chongqing as a study area.Uses GIS spatial analysis method to identify and classify the land use ecological conflicts in the Three Gorges Reservoir Area of Chongqing in 2015.The conflict intensity index is introduced to measure the intensity of land use ecological conflicts.Uses mathematical statistics method to partition the land use ecological conflicts,propose regulation and control measures.In order to provide a methodological path for alleviating the land use ecological conflicts in the Three Gorges reservoir area of Chongqing.The results are as follow:(1)The ecological sources area is 8561.68 km2,and accounts for 18.54% of the study area,which is mainly distributed in the northeastern and southern mountainous of the study area.(2)The low security level is composed of ecological sources,including the main waters,parks,scenic spots and nature reserves in the Three Gorges reservoir area of Chongqing.The area of the lower ecological security level is 11840.43 km2,which is mainly distributed at the edge of the low ecological security level.The area of the medium ecological security level is 17414.29km2,which is the transition area between natural ecosystem and human social system.The area of high ecological security level is 8363.11km2,which is the main human activity area.(3)Cultivated land conflict,construction land conflict and integrated land use ecological conflict are mainly manifested in general conflict and non-conflict in the Three Gorges reservoir area of Chongqing in 2015.The serious conflict of cultivated land is concentrated in the northeast and the south.The distribution of more serious conflict is more dispersed,and all counties are distributed.The general conflict and non-conflict are concentrated in the southwest and central regions.The serious conflict of construction land is scattered in all counties.More serious conflict is concentrated in the periphery of serious conflict.The general conflict and non-conflict are concentrated in the main urban area of Chongqing and the peripheral and central counties.The serious conflict of integrated land use ecological conflict is concentrated in the northeast,the south,and a small part of the main urban area of Chongqing.The more serious conflict is widely distributed and scattered,and all counties are distributed.The general conflict and non-conflict are concentrated in the northeast-southwest direction in the Three Gorges reservoir area of Chongqing.(4)The intensity index of cultivated land conflict is between 5.37% and 11.55% in the Three Gorges reservoir area of Chongqing in 2015.The intensity of cultivated land conflict varies relatively small among different counties.Most of the study areas are in high-level conflict and moderate conflict,and the intensity of cultivated land conflict is relatively high.The intensity index of construction land conflict is distributed between 0.10% and 10.38%.The intensity of construction land conflict varies greatly among different counties.Most of the study areas are in mild conflict,and the intensity of construction land conflict is small.The intensity index of integrated land use ecological conflict is distributed between 7.23% and 19.76%.The intensity of integrated land use ecological conflict varies relatively large among different counties.Most of the study areas are in moderate conflict and mild conflict,and the intensity of integrated land use ecological conflict is at a medium level.