Land use change and landscape ecological risk assessment in Chongqing from 2000 to 2020

doi:10.14088/j.cnki.issn0439-8114.2023.07.007

Abstract

Abstract: Based on the land use data of Chongqing in 2000, 2010, and 2020, the dynamic changes in land use characteristics were, and analyzed an ecological risk assessment model was established using the landscape vulnerability index and landscape pattern index to evaluate the spatiotemporal changes in ecological risk. The results indicated that from 2000 to 2020, the main types of land use in Chongqing were arable land and forest land;the area of artificial surface, forest land, and water bodies continued to increase, while the area of arable land, grassland, shrubland, and wetland continued to decrease. Among them, the area of artificial surface had significantly increased, mainly from arable land;the landscape ecological risks in various periods of Chongqing showed a positive agglomeration effect in space, while the high high agglomeration areas showed a decreasing trend;Chongqing was mainly located in areas with medium and low ecological risks, with overall ecological risks gradually weakening. Differentiated land use measures needed to be taken for different ecological risk areas.

Key words: land use, landscape pattern, landscape ecological risk assessment, Chongqing City

CLC Number:

F301

SUN Gui-yan, DAI Yun-chuan. Land use change and landscape ecological risk assessment in Chongqing from 2000 to 2020[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(7): 38-43.

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