Yunnan hot regions were classified into three geographical forest regions : 1 ) of southeastern yunnan including yuanjiang river region , nanpanjiang river and southern subtropical area ; 2 ) southern yunnan , including lancangjiang river area , nujiang river and yiluowadi river area ; 3 ) northern yunnan , including the dry and hot valley areas of jinshajiang river and tropical sparse forest grassland area 把云南热区分为3个森林地理区：云南东南部元江、南盘江流域热带北缘、南亚热带森林区，云南南部西南部澜沦江、怒江、伊洛瓦底江流域热带北缘、南亚热带森林区，云南北部金沙江河谷热带性、南亚热带性稀树草原森林区。
