Overview of the Nansha Lake Scenic Area

Nansha Lake is a seasonal freshwater lake that has many functions such as flood storage, flood diversion, transportation, breeding, irrigation, tourism, etc. It plays a decisive role in Shaanxi's land and resources. When there are many eyes in the upper reaches of the dry river, there are underground rivers and special terrains such as karst caves, karst ditches, and stone teeth. In addition to a small amount of metamorphic rocks, magmatic rocks, and red sandy conglomerates, the middle and lower reaches are mostly composed of granite, metamorphic granite, sand, and gravel. . Therefore, the landscape of continuous mountains, beautiful mountains and rivers and lakes in the area today was formed.

Because it has a unique natural geographical landscape of "high water is a lake, low water is a river", during the flood season every year, river floods flow into the lake, the lake floods the plain, and the lake surface is vast, forming a unique subtropical humid monsoon area. Wetland ecosystem. Typical lake area wetlands have always been the main overwintering habitat for rare birds such as cranes, storks, and swans, as well as the habitat for summer migratory birds such as herons and swallows. The huge number and variety of migratory birds have become a beautiful sight for eco-tourism in Shaanxi.

The Nansha Lake Reservoir was built after three years of hard work and a dam was built on the mountain at the mouth of the valley (Wulangguan) when the national water conservancy project was launched in 1958. The reservoir has a length of 7.5 kilometers, a width of 2.5 kilometers, a backwater line of 5.1 kilometers, the deepest water area of ??40 meters, the widest basin surface of 600 meters, the top of the reservoir is 560.8 meters high, and the total reservoir capacity is 43.3 million cubic meters, which can irrigate farmland. 43,000 acres, with an annual power generation capacity of 5 million kilowatt hours.

The scenic area has no severe cold in winter and no scorching heat in summer. It has abundant rainfall and is humid all year round. Rain and heat are in the same season, and dry and wet alternate. The annual average temperature is 14.2°C, the hottest month, July, has an average temperature of 25.3°C, and the coldest month, January, has an average temperature of 2.1°C. The annual precipitation is 1000-1400 mm, mostly concentrated at the turn of summer and autumn. The frost-free period lasts for more than 240 days in a year. The forest is affected by topography and climate, and there is no direct zoning phenomenon. Most of the forests are mixed forests such as deciduous forest and evergreen coniferous forest.

Nansha Lake Scenic Area has convenient external transportation. There are dedicated bus lines leading directly to the county seat. Multiple passenger lines from Hanzhong to Chenggu, Erli and Tianming pass through the entrance of the scenic area. The Shangyuanguan exit of Xihan Expressway is only 5 meters away from the scenic area. kilometers, the Shitian Expressway passes directly from the entrance of the scenic spot.