Suitable Cropping Regionalization and Assessment of Buckwheat Based on Random Forests in China
Sang Manjie
Wei Haiyan
Mao Yajuan
Shang Zhonghui
Gu Wei
Abstract：In this study,196 buckwheat distribution records were obtained.The correlation and variable importance of random forests (RF)analysis were used to choose at 15 environmental evaluation factors that containing climate,soil and terrain types.Combined with RF model,the distribution of potential cropping area was predicted,and then the suitable cropping regions of buckwheat were regionalized.The dominant factors affecting growth of buckwheat were analyzed based on the variable importance of RF.The results showed that the prediction accurate of buckwheat suitable cropping distribution was higer.The suitable regions distributed from the northeastern to the southern of China,but the highly suitable region was smaller.The climate factors had the largest influences on buckwheat growth,and the dominate factors were sunshine hours (SH),annual mean temperature (Bio1)and precipitation of warmest quarter (Bio18).Their response curves were made to clarify its impact on the growth of buckwheat furtherly.This study might provide a reference for the rational cultivation planning of buckwheat in China.
Keywords：BuckwheatRandom forestsSuitable cropping regionDominate factor
Publication Date：2015-07-02
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 46-52 )