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[1]CHEN Shiyin,BIN Jinyou,CAI Shiyu.Study on Spatiotemporal Characteristics of Cultivated Land Ecological Pressure-Bearing Capacity in Guangdong Province Based on ESDA-GIS[J].Research of Soil and Water Conservation,2021,28(04):358-365.

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Study on Spatiotemporal Characteristics of Cultivated Land Ecological Pressure-Bearing Capacity in Guangdong Province Based on ESDA-GIS

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 04 Page number: 358-365 Column: Public date: 2021-08-10

Title:: Study on Spatiotemporal Characteristics of Cultivated Land Ecological Pressure-Bearing Capacity in Guangdong Province Based on ESDA-GIS

Author(s):: CHEN Shiyin¹, BIN Jinyou^1,2, CAI Shiyu¹; (1.College of Management, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China; 2.Guangdong Coastal Economic Belt Development Research Institute, Zhanjiang, Guangdong 524088, China)

Keywords:: ecological pressure-bearing capacity of cultivated land; ecological footprint; spatiotemporal characteristics; ESDA-GIS; Guangdong Province

CLC:: F301.21

DOI:: -

Abstract:: In order to guarantee food security and sustainable development of ecological security of cultivated land, taking Guangdong Province with large introduction of grain food and population as an example, which is also the region with the largest reduction in cultivated land area in China, we used ESDA-GIS analysis method and ecological footprint model under the concept of ‘national hectare' to revise the yield factors in the traditional model, and explored the spatiotemporal variation characteristics of cultivated land ecological pressure-bearing capacity in Guangdong Province from 2008 to 2017. The results show that:(1)during the study period, the ecological footprint and ecological carrying capacity of cultivated land in Guangdong Province generally showed the downward trend with the flying geese-type fluctuation, and the ecological supply of cultivated land showed the continuous deficit; the index of cultivated land pressure capacity in Guangdong Province was between 0.500 and 0.520, which was in a weak and unsustainable state;(2)from 2008 to 2017, the indexes of cultivated land ecological pressure capacity of all prefecture-level cities in Guangdong Province ranged from 0.440 to 0.600; the types of cultivated land ecological pressure were mainly ‘weakly unsustainable' and ‘weakly sustainable', and the load of cultivated land ecological pressure capacity was serious;(3)the ecological bearing capacities of cultivated land in all prefecture-level cities in Guangdong Province unevenly distributed, and there was significant positive spatial autocorrelation in spatial distribution, but the spatial agglomeration tendency was somewhat weakened; Moran scatter diagram showed that each district city of Guangdong Province farmland ecological pressure presented the spatial distribution of the high—high or low—low agglomeration phenomenon. In a word, the ecological carrying capacity of cultivated land in Guangdong Province is not optimistic and the regional endowment of cultivated land resources is obviously different. Therefore, the main development direction of the cultivated land in Guangdong Province is to adapt to local conditions, manage and control the cultivated lands in different regions and make efficient use of the cultivated lands.

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Last Update: 2021-08-20