Spatial pattern of transformation between cropland and other agricultural lands in the Yellow River Basin from 1990 to 2021 and its impact on cropland suitability
Based on 30-meter resolution land cover grid data and applying advanced spatial analysis techniques such as ArcGIS,land use transfer matrix,and niche theory,this study conducted an in-depth analysis on the mutual conversion between cropland and other agricultural lands,such as forest,shrub,and grassland,in the Yellow River Basin from 1990 to 2021.The research aimed to provide decision support for the scientific implementation of the"Balance Between Land Input and Output"system to ensure food security and promote high-quality development in the Yellow River Basin.The results showed that:1)From 1990 to 2021,the net conversion of cropland to other agricultural lands in Yellow River Basin was 1.8351 million hectares,with a non-agricultural land conversion rate of 4.9％,and the displacement effect of livestock development on cropland was the most significant.2)The net conversion of cropland mainly occurred in Qinghai,Gansu,Shaanxi,Shanxi,middle Inner Mongolia,with larger net conversion areas in prefecture-level administrative regions such as Ulanqab,Yan'an,Yulin,Xinzhou,Lvliang,and Qingyang,while regions,such as western Inner Mongolia,Ningxia,northern Henan,and Shandong,were mainly net receivers of cropland.The distribution pattern of non-agricultural land conversion rate differed from that of net conversion of cropland,with higher non-agricultural land conversion rates in regions such as Yushu,Guoluo,and Aba,despite their lower net conversion of cultivated land.3)The spatial pattern evolution of conversion between cropland and other agricultural lands in the Yellow River Basin positively impacted the suitability of ecological factors for the croplands,such as slope,erosion risk,accumulated temperature above 10℃,and soil pH,and negatively impacted the suitability of annual precipitation,soil texture,and organic matter content for croplands.It also negatively impacted the comprehensive suitability of the croplands at the basin level,but positively impacted the comprehensive suitability of the croplands in more areas at the prefecture-level administrative region,especially in the middle and lower reaches with abundant cropland resources.
Yellow River Basinspatial patternconversion of agricultural landcropland suitabilitybalance of entry and exit
NETL
NSTL
维普
万方数据
