Spatio-temporal analysis of the geographical centroids for three major crops in China from

Spatio-temporal analysis of the geographical centroids for three major crops in China from 1949

to 2014

FAN Lingling;LIANG Shefang;CHEN Hao;HU Yanan;ZHANG Xiaofei;LIU Zhenhuan;WU Wenbin;YANG Peng

【期刊名称】《地理学报（英文版）》 【年(卷),期】2018(028)011

【摘要】Spatial distribution changes in major crops can reveal important information about cropping systems.Here,a new centroid method that applies physics and mathematics to spatial pattern analysis in agriculture is proposed to quantitatively describe the historical centroids of rice,maize and wheat in China from 1949 to 2014.The geographical centroids of the rice area moved 413.39 km in a 34.32° northeasterly (latitude 3.08°N,longitude 2.10°E) direction at a speed of 6.36 km/year from central Hunan province to Hubei province,while the geographical centroids of rice production moved 509.26 km in the direction of 45.44° northeasterly (latitude 3.22°N,longitude 3.27°E) at a speed of 7.83 km/year from central Hunan province to Henan province.The geographical centroids of the maize area and production moved 307.15 km in the direction of 34.33° northeasterly (latitude 2.29°N,longitude 1.56°E) and 308.16 km in the direction of 30.79° northeasterly (latitude 2.39°N,longitude 1.42°E),respectively.However,the