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[1]CHEN Bin,XU sShangzhao,ZHOU Yangyang,et al.Assessment of Landscape Ecological Risk in Jianghan Plain Area Based on Land Use Change[J].Research of Soil and Water Conservation,2022,29(05):228-234,243.

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Assessment of Landscape Ecological Risk in Jianghan Plain Area Based on Land Use Change

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 05 Page number: 228-234,243 Column: Public date: 2022-08-20

Title:: Assessment of Landscape Ecological Risk in Jianghan Plain Area Based on Land Use Change

Author(s):: CHEN Bin^1,2, XU sShangzhao^1,2, ZHOU Yangyang^1,2, WANG Hongzhi³, YANG Dingtian⁴; (1.No.290 Research Institute, CNNC, Guangdong Provincial Key Laboratory of Environmental Protection and Nuclear Radiation Tracking Research, Shaoguan, Guangdong 512029, China; 2.Guangdong Provincial Engineering Technology Research Center of Radioactive Eco-environmental Protection, Shaoguan, Guangdong 512029, China; 3.College of Urban and Environmental Science, Central China Normal University, Wuhan 430079, China; 4.Guangdong Key Laboratory of Ocean Remote Sensing, South China Sea......)

Keywords:: land use; landscape ecological risk; Jianghan Plain; global autocorrelation model

CLC:: X826

DOI:: -

Abstract:: Land use/cover change can characterize the spatial differentiation characteristics of urban landscape ecological risk. Based on the data from the four basic remote sensing surveys of land use in the Jianghan Plain from 2000 to 2015(2000, 2005, 2010, and 2015)and the zoning data of county-level administrative units in Hubei Province, we used global autocorrelation models and geostatistical analysis methods to quantitatively reveal the spatial coupling relationship between land use level and landscape ecological risk. The results show that:(1)from 2000 to 2015, the land use types of Jianghan Plain were mainly cultivated land, water area and construction land, and the land transfer types were mainly cultivated land to construction land;(2)from 2000 to 2015, the landscape ecological risk in the Jianghan Plain evolved significantly in time and space; cold spots and sub-cold spots increased, and both sub-hot spots and hot spots showed a trend of first increasing and then decreasing; the high-value areas of ecological risk mainly distributed in Honghu City in the southeast of Jianghan Plain, and the low-risk areas mainly distributed in Dangyang City and Songzi City in the west of Jianghan Plain;(3)from 2000 to 2015, the area of the low ecological risk area in the Jianghan Plain showed a gradual decrease, from 2 015.63 km² in 2000 to 1 960.87 km² in 2015; the area of the medium-risk zone increased first and then decreased, with the largest increase from 2005 to 2010, reaching to 2 061.26 km²;(4)from 2000 to 2005, the overall shift of the low ecological risk center of gravity in the Jianghan Plain was not obvious, and it mainly distributed in the northwest of the Jianghan Plain; the lower ecological risk center of gravity shifted the largest spatial span, shifting 79.8 km westward; the medium-risk areas mainly shifted to the northeast, and the higher-risk areas and high-risk areas mainly concentrated in Honghu City in the southeast of Jianghan Plain, and both showed a trend of shifting to the northeast; the higher-risk areas shifted their centers of gravity significantly faster than High-risk area. This research can provide scientific basis and theoretical reference for urban land use development and ecological risk assessment.

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Last Update: 2022-08-20