1, Yalu River Broken Bridge: The Yalu River Broken Bridge is located at the bank of the Yalu River, Jiang 'an Road, Zhenxing District, Dandong City, Liaoning Province, China, and is the remnant of the original Yalu River Bridge after being bombed. The Yalu River Broken Bridge is the first of many bridges on the Yalu River. May starts 1909,1October finishes 19 1 1. The Yalu River Broken Bridge was originally a railway bridge with 12 openings, with a total length of 916.84m and a width of1/m.. The fourth hole from the Chinese side is an opening and closing beam, which can rotate 90 degrees with pier No.4 as the axis to facilitate the navigation of passing ships.
2. Yalu River Estuary Wetland: Liaoning Yalu River Estuary Coastal Wetland National Nature Reserve is located at the northernmost part of China's coastline and is the intersection of flora in North China and Northeast China. The three ecosystems, inland, tidal flat and ocean, meet and transition, forming complex and diverse ecosystem types including reed wetland, swamp, lake swamp, tidal swamp and estuary. Liaoning Yalujiangkou Wetland National Nature Reserve is distributed in a strip along the 93 km coastline.
Terrain of Yalu River:
The drop from the source of Yalu River to the estuary is 2440m, the average annual runoff of the estuary is 29 1 100 million m, and the terrain of the basin is high in the northeast and low in the southwest. Above Linjiang is the upstream, with mountains on both sides, with an altitude of 500- 1500m. The riverbed slope is extremely steep, generally 1% ~ 4%. Affected by the terrain, the rainfall is uneven, with more in summer and less in winter. The annual rainfall in flood season is 870 mm, and there are many mountains and canyons above Changbai County, with dense forests, steep slopes and fast-flowing water. The valley width is 50 ~ 150 m, and it is rich in hydropower resources.
Linjiang to Shuifeng is the middle reaches, with increased water volume and gentle slope, with a valley width of 200-2000m·m m, and Shuifeng to Hekou is a long-distance reach with a wide valley, low mountains on both sides, narrow plains and many sandbars in the middle of the river. There are nearly 200 islands in the middle of the river, Wen 'an Beach is the largest, and the river near Dandong is 5km wide, which flows into Donggou and branches into the Yellow Sea. A small area in the upper reaches of Yalu River is basalt, and the whole riverbed is composed of Precambrian rocks, and the alluvial layer flows to the estuary and begins to spread outward. Most valleys where rivers flow are deep.
The above contents refer to Baidu Encyclopedia-Broken Bridge of Yalu River Baidu Encyclopedia-Yalu River Estuary Wetland.