Nujiang Prefecture is located in the southwest border of the motherland, in the middle section of Hengduan Mountains extending south of Qinghai-Tibet Plateau. From west to east, it is one of the longest mountain canyons in the world. The folded mountain system of Dailika Mountain, Gaoligong Mountain, Robbie Snow Mountain and Yunling Mountain runs through the north and south, and the three deep valleys of Dulong River, Nujiang River and Lancang River are alternately arranged from north to south. The weather in the state changes greatly and the climate is different. Quanzhou's climate has the same characteristics as that of Yunnan's low-latitude plateau monsoon climate, with small annual temperature difference, dry daily temperature, distinct wet seasons and indistinct four seasons. At the same time, due to the differences in topography and latitude, it is cold in the north, warm in the middle and hot in the south. The mountains are cold, the mountains are warm, and the riverside is hot; In some areas, the rainy season starts very early, the dry season is very short, and the warm season lasts for a long time, so there is no unique climate characteristics of early spring and three-dimensional climate.
The lowest altitude in Nujiang Prefecture is 738 meters, and the highest is 5 128 meters. The obvious altitude difference and complex regional environment affect the redistribution of heat conditions, and the temperature varies from place to place. Generally, it is located in the low-heat valley below 1400 meters above sea level, with the highest temperature and abundant heat. The annual average temperature is16.8 c ~ 20.1c, the hottest monthly temperature is 21.7 c ~ 24.7 c, and the temperature in Leng Yue is 165438. Altitude 1800 ~ 2300m, annual average temperature15.1c ~1c, hottest monthly temperature19.3 c ~/kloc-0. In mountainous areas above 2300m above sea level, the annual average temperature is above 1 1.0℃, the hottest temperature is above 17.8℃, the lowest temperature is below 3 1℃, and the extreme lowest temperature is below-10.2℃ and above.