When is the best time to go to Nujiang?

The best time of Nujiang River: May to September is warmer, which is the golden season of grassland. During this period, the climate was mild and the weather was beautiful, and the rainfall accounted for 82% of the whole year. The growth period of green plants is about 100 days, all of which are concentrated in this season. At this time of grassland full of green, everything is thriving, and people and livestock are happy.

Nujiang River is the second largest river in Tibet, which originates from the southern foot of Jiggegepa Peak in Naqu Tanggula. It flows into Changdu area 2 km below the mouth of Requ River in Rongbu District of Suoxian County, flows through the four counties of Bianba, Luolong, Basu and Zuogong, enters Chayu County at 13 km west of Bitu in Zuogong County (2852 north latitude), and then goes south, leaving the country for Myanmar, which is called salween. The Nujiang River in Changdu area is 660km long, with an elevation of 3,652 m, a drop of 1572m, a drainage area of 48,000 km2, an annual average flow of 758.2 m3/s and an annual runoff of 239 1 100 million m3 (Jiayuqiao Station). The geomorphological features of Nujiang River Valley can be divided into two sections, the upper section is a narrow canyon section dominated by canyons, and the lower section is a deep canyon section.

In western Russia and above, the river length is 2 16km, and the river surface is 3652 ~ 3305 m above sea level. The reach is dominated by canyons, with single riverbed and undeveloped terraces. The width of the river is generally 50 ~ 70m, and the river cuts into the bedrock, and the cutting depth exceeds1000 m.. The slope of the valley is generally 25 ~ 30. Some river valleys are slightly wider, and platforms are developed on both banks. Why is Luxiang a narrow valley in western Russia (the river surface is 3340 ~ 3305 m above sea level) with a river length of about 34km? The valley is relatively wide and gentle, reaching about 1km at its widest point, but the river bed is still a single channel.

Rivers below western Russia are deep canyons until they flow out of Qamdo. This section of the river is 44 kilometers long, with an altitude of 3305 ~ 2080 meters, and the cutting depth of this section of the river is as high as 1500 ~ 2500 meters, or even more. Ridges and valleys fluctuate greatly, and the slope of valleys is steep, generally around 30. In some river sections, the valley phenomenon is obvious, with a gentle V-shaped valley in the upper part and a steep valley in the lower part. The valley slope is unstable, and collapses, landslides and mudslides occur frequently. The bedrock of the river is deep, and there are many rapids and rapids in the riverbed, and the riverbed is the bottom in most sections. At the intersection of some smaller branches and ditches, landslides and debris flow fan platforms occasionally develop. For example, the Zuogong Dongba and Jiayu Bridge in Luolong are relatively wide river valleys in this canyon section. Jiayu Bridge has three-stage pedestal terraces with relative heights of 15 ~ 25m, 50m and 80m respectively, and there are valley shoulders of about 500~700m on them. In this section of the canyon, it is not only difficult to cross the valley, but also difficult to pass along the valley because of the steep cliffs along the river. It is the steepest one in the Sanjiang Grand Canyon, and there are no human footprints in many sections so far.