Analyzing the Characteristics of Cropping Intensity’s Change of Cultivated Land in China During 2010-2019

The sustained stability of the arable land replanting index is crucial to national food security strategy. exploration temporal and spatial changes in great significance for agricultural development evaluation. This study investigates China’s from 2010 2019 using MODIS NDVI image data, S-G filtering, quadratic differentiation methods. results show that there are significant differences index, with Huang-Huai-Hai region mainly producing double-cropping crops, Northeast Plain Loess Plateau single-cropping area south Yangtze River multiple-cropping crops. Overall, production based on single-season There a gradual shift towards double-season crops north south, lower indices northwest higher eastern provinces. has significantly than north. During period, showed an overall upward trend. were increases northeast, Plateau, northern region. However, was downward trend southern middle reaches River. It maintain effective planting while also addressing ensure by stabilizing index.