Geographical environment of Shangri-La

All the rivers in China belong to the Jinsha River system. In addition to the main stream of Jinsha River, there are 244 large and small rivers in China. Among them, the first-class tributaries with annual average flow of 3.7~43.7 m3/s are Shuoduogang, Gangqu, Dongwang River, Niru River, Jiren River, Dulang River, Annan River, Liangmei River, Tangman River, Anle River, Baishui River and Mairu River.

lake

There are 298 alpine lakes (including moraine lakes) in Shangri-La, which are distributed over 10 mu at an altitude of 3000 ~ 4500m. Dongwang Township is wrong, Gini, Awang, Dang and Damocles are wrong, and Gezan Township is wrong, wrong, wrong, wrong, wrong. Jidi Cuobo, Jicuo, Napahai, Shudu Lake, Cuowala, Cuojiu, Bitahai and Nishi Cuona in Jiantang Town, Abougit Cuobo, Shaocuo and Sanhai in Xiaozhongdian Township, and Baihai, Shuanghai, Black Sea, Qinghai, Anacuogeda, Jiuzihai, Baha Black Sea and Gulf Sea between Xiaozhongdian Township and Jinjiang Township. Among them, I am the four plateau lakes with the largest area and the most beautiful scenery: Napahai, Bitahai, Shudu Lake and Sanbihai. Shangri-la is located in the high altitude and low latitude zone, and the climate changes with altitude, and six climatic zones appear in turn. It is a typical "three-dimensional agricultural climate", and its climatic characteristics are as follows:

1. The monsoon climate is alternately controlled by the southwest monsoon and the south branch of westerly jet, with distinct dry and wet seasons. There are many rainy days in June and June, and the rainfall accounts for 10-80% of the annual precipitation, forming the rainy season. 11-There are many sunny days, plenty of sunshine and large evaporation in May. Rainfall accounts for 10-20% of the annual precipitation, forming a dry season.

2. Three-dimensional climate The snow-capped mountains in the county are towering and the valleys are deep. The climate changes with the elevation. From the Jinsha River Valley at an altitude of 1.503 meters to the top of Haba Snow Mountain at an altitude of 5309 meters, there are six climatic zones in turn, namely, the north sub-region of the valley, the warm temperate zone of the mountain, the cold temperate zone of the mountain, the sub-frigid zone of the mountain and the cold zone of the mountain. The climate of the county is wide and narrow, forming a typical three-dimensional climate of "one mountain divided into four seasons".

3. The plateau climate is located on the Shangri-La Plateau at 3 25' of the Tropic of Cancer, with Zhongdian Bazi as the main climate, with an average elevation of 3,450 meters. The solar radiation energy is abundant throughout the year, and the temperature is low throughout the year, with no summer and an average temperature of 5.5℃. However, the atmospheric transparency is high, the solar radiation is strong, the temperature rises rapidly during the day, the temperature drops rapidly at night, and the daily temperature difference is large. The daily temperature difference in dry season can reach 30℃, which can be described as "there are four seasons in a year, but there are four seasons in a day".

4. Topography and microclimate Shangri-La is low in the south and high in the north, with warm and humid airflow in the south, relatively abundant precipitation, humid climate and relatively dry climate in the north. Shangri-La has a complex topographical structure and various climatic types are intertwined. In the same vertical climate zone, there is a single small topographic climate, such as forest climate, grassland climate and lake basin climate, which forms the climate characteristics of "different days in the middle"