Driving mechanisms of rice multi-cropping change in Southern China based on geodetector

Qi Wang; Renjing Wang; Yubin Chen

doi:10.1117/12.3007486

30 August 2023 Driving mechanisms of rice multi-cropping change in Southern China based on geodetector

Qi Wang, Renjing Wang, Yubin Chen

Proceedings Volume 12797, Second International Conference on Geographic Information and Remote Sensing Technology (GIRST 2023); 127970L (2023) https://doi.org/10.1117/12.3007486
Event: 2nd International Conference on Geographic Information and Remote Sensing Technology (GIRST 2023), 2023, Qingdao, China

Abstract

This study utilized remote sensing data analysis to obtain remote sensing images of rice cultivation systems. ArcGIS hotspot analysis and point pattern analysis functions were employed to analyze the changing trends and spatial patterns of rice re-planting index in the study area from 1990 to 2020, in combination with statistical data analysis. The research findings indicate a decrease in both the rice cultivation area and production in the southern regions of China, except for the Guangxi Zhuang Autonomous Region where the proportion of double-season rice cultivation has also decreased. In terms of spatial distribution, the concentrated areas for single-cropped rice cultivation have expanded, while the concentrated areas for double-season rice cultivation have decreased and become more dispersed. The overall direction of rice cultivation in the study area has gradually shifted northward, indicating a weakening influence of Zhejiang and Hubei provinces. Furthermore, the geodetector was used to identify the influencing factors of the proportion of double-season rice cultivation and the driving mechanisms behind its changing trends. It was found that compared to 1990, the explanatory power of agricultural technological progress indicators has significantly increased, and per capita disposable income of farmers has emerged as the dominant explanatory factor for the proportion of double-season rice cultivation. It is recommended that government departments provide policy support in the form of regional differentiation policies, strengthening the construction of supporting agricultural facilities, and deepening reforms on the supply side of rice production. These measures aim to stabilize and increase the area and yield of double-season rice cultivation, ensuring national food security.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qi Wang, Renjing Wang, and Yubin Chen "Driving mechanisms of rice multi-cropping change in Southern China based on geodetector", Proc. SPIE 12797, Second International Conference on Geographic Information and Remote Sensing Technology (GIRST 2023), 127970L (30 August 2023); https://doi.org/10.1117/12.3007486

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