一、前言龙陵县位于云南西部。受怒江、龙川江两江环抱。东与施甸、永德、镇康相邻,南与缅甸为界,西与潞西、梁河毗连,北接腾冲、保山。高黎贡山山脉由北向南伸入县境,形成中部高起、东西两侧倾斜的地形,主脉多为北南走向,支脉多为东西走向;境内层峦叠嶂,高山耸峙,峡谷深陷,气候和动植物均作立体分布;由于地处高黎贡山南段迎风面,印度洋 I. Introduction Longling County is located in western Yunnan. Nujiang River, Longjiang River surrounded by two rivers. East and Shidian, Yongde, Zhenkang adjacent, south and Burma as the boundary, West and Luxi, Lianghe adjoining, north of Tengchong, Baoshan. The Gaoligongshan Range stretches into the county from north to south, forming a high-rise in the middle and a sloping topography on both east and west sides. The main veins are mostly north-southward and the branches are mostly east-west direction. The territory has many peaks and valleys, And flora and fauna are three-dimensional distribution; due to be located in Gaoligong Shannan windward, the Indian Ocean