What are the climatic characteristics of Shangluo?
The city is dry in winter and spring, rainy in summer and autumn, warm and humid with four distinct seasons. The annual rainfall is about 700 mm, the sunshine is 2000 hours, the frost-free period is 200 days, and the annual average temperature is 12.8℃.
Drought, continuous rain, heavy rain, hail, frost and other disastrous weather occur from time to time. Spring from March to May and autumn from 9- 10 are the best seasons to travel to Shangluo.
The Geographical Environment, Location and Realm of Shangluo
Shangluo City is located in the southeast of Shaanxi Province, bordering Nanyang City, lingbao city, Lushi County, Xixia County and Xichuan County in the east. The southeast is adjacent to Yunxian County and Yunxi County in Hubei Province; The west and southwest are bordered by ningshan county and Xunyang County of Ankang City; The north and northwest are adjacent to Tongguan County, Huazhou District and Huayin County of Weinan City and Lantian County and Chang 'an District of Xi City. East longitude 108? 34? 20 1 1 1? 1? 25? North latitude 33? 2? 3034? 24? 40? , with a total area of 1985 1 km2. Distance from Xi 'an 1 10 km; 48 kilometers away from Luonan County; 5 1 km from Danfeng County; Distance to Shangnan County117 km; 62 kilometers away from Shanyang County; Distance from Zhen 'an County174 km; From Zhashui County 146km.
geologic structure
Shangluo city has a complex geological structure. According to the different structural characteristics and development degree, it is divided into two structural units, with iron furnace? Loucun? Lingkou Line is bounded in the north by the Shang Wei Platform Edge Fold Belt on the southern margin of North China Quasi-land, and in the south by the East Qinling Fold System of Chyi Chin Geosyncline.
The fold belt at the edge of the northern Shang Wei platform consists of two tertiary units, Taihua Early Proterozoic Uplift and Shimenxia Paleodepression. The basement is Archean Taihua Group metamorphic rock, and the caprock is Sinian sub-middle, Cambrian and Ordovician strata, which are mainly composed of igneous rocks, shallow-sea shale, clastic rocks and carbonate rocks, showing obvious regional unconformity with Taihua Group strata that constitute the ancient basement. The southern part of the East Qinling fold system is composed of Caledonian fold belt, Variscan fold belt and Indosinian fold belt, which are separated by the Shangnan composite fault in Shangzhou, Xie Yang, Yingpan and Zhulinguan revival fault in Niuerchuan, Fengzhen, Lianghe, with east-west distribution, complex structure, developed faults, great lithological changes and complete strata exposure, which are different from the fold belt on the edge of Shang Wei platform in the north in terms of strata, structure, magmatic activity, metamorphic degree and mineralization.
According to the stratum development and lithology, the whole region can be divided into five communities: Shimen in Jinduicheng, Shangzhou in Luonan, Yang Shan in Zhashui, Zhulinguan in Zhen 'an and Xianghe in Bronze. Archaean, Paleozoic, Sinian, Cambrian and Ordovician strata are widely distributed in the north. Rocks mainly include granite, quartzite, marble and schist. Paleozoic, Ordovician and Silurian strata are widely distributed in the south, and the rocks are mainly limestone, marl, slate and shale. The middle and upper Devonian and lower Paleozoic Carboniferous strata are widely distributed in the central part, and the rocks mainly include schist, slate, marble, limestone and marl.
topography
Shangluo city has a complex landform structure, which is known as? Eight mountains, one water and one field? Known as. There are six mountain ranges, Qinling, Mangling, Liu Ling, Stork Mountain, Xinkailing and Yunling, with rolling mountains. Ridges and valleys are arranged alternately, and the terrain is high in the northwest and low in the southeast, and it is palm-shaped from northwest to southeast. The highest elevation is located in Niubeiliang (2802. 1m), the main ridge of North Qinling Mountain in Zhashui County, and the lowest elevation is located in Danjiang River Valley near Shangnan County (2 15.4m).
Hydrological survey
Shangluo City is criss-crossed with ravines and numerous rivers, with more than 72,500 large and small rivers and their tributaries. Among them, there are about 240 rivers whose flow length exceeds 100 km, and 67 rivers whose catchment area exceeds 100 km. The river network density is greater than 1.3km/km. The main rivers are Luohe, Danjiang, Qianjin, Ganyou and Xunhe, and only five rivers flow out of the country, namely Lanqiao, Xujiahe, Taohe, Heiqi and Miao Xin. These rivers belong to the Yangtze River and the Yellow River. Luohe River and Lanqiao River belong to the Yellow River, with a drainage area of 2,882.8 square kilometers, accounting for15% of the total river area; Other rivers belong to the Yangtze River basin, with a basin area of 16700.9 square kilometers, accounting for 85% of the total basin area.
Shangluo Scenic Area is similar to Grand Canyon National Forest Park. Jin Sixia? Located in Shangnan County, Shangluo, Shaanxi Province, it is a national AAAAA tourist area, national forest park and national geological park, and is known as "deciduous broad-leaved trees". Gudu? 、? Qixia, China? 、? Wonders of the World Canyon? 、? The most beautiful Grand Canyon in China? .
Danjiang Drifting: Located in Danfeng County, Shangluo, Shaanxi Province (Gulong Juzhai), Danjiang Drifting from? Qin Jin in the north and Wu Chu in the south? From the water to Han Xiang, the boat is like a cloud, with a total length of about 8 kilometers. The mountains are surrounded by water, and the ecological environment of farmland houses on both sides is beautiful, which is the first drift in the northwest. The best rafting resort in China? , national AAAA-level tourist attractions.
Niubeiliang National Forest Park: located in Zhujiawan Village, Yingpan Town, Zhashui County, Shangluo, Shaanxi Province, with an altitude of 1, 000-2,802 meters and a total area of 2 1.23 hectares. The Qinling Long Tunnel passes through the abdomen, with its dense virgin forest, quiet Tanxi Waterfall and unique canyon scenery, which is a good place for urbanites to relax.
Zhashui Cave: Located in the south of Zhashui County, Shangluo City, Shaanxi Province, with an area of about 17 square kilometers, the natural environment here is exquisite and elegant, with numerous and concentrated scenic spots. There are 1 15 caves discovered, which are not only karst caves comparable to Yaolin Wonderland, but also rare tourist areas with caves and natural scenery. Praise it? Wonders of the North? And then what? A must in the northwest? . This scenic spot is one of the top ten scenic spots in Shaanxi Province, a national famous cave, a national AAAA-level tourist attraction and a national geological park.