Wafangdian city, which belongs to Dalian, Liaoning Province, is located in the central and western part of Liaodong Peninsula, with the latitude of 39 20 ′ ~ 40 07 ′ and the longitude of1213 ′ ~12216 ′. It borders Pulandian Bay in the east, Bohai Sea in the west, Jinzhou District across the sea in the south and gaizhou city in Yingkou City in the north. It is 292km from Shenyang in the north and 0/04km from Dalian/KLOC-0 in the south, which is an important economic zone connecting Shenyang and Dalian. The total area is 4 176.07 square kilometers (20 1 1 year). The population is 942845 (20 1 1 year-end). In 2065,438+00, wafangdian city achieved a regional GDP of 65 billion yuan. There are famous scenic spots in wafangdian city, such as Yongfeng Pagoda, Changxing Island, Xianyu Bay, Hengshan Academy, Yongquan Temple and Longtan Taoist Temple.
Wafangdian city's topography is high in the northeast and low in the southwest, and the remaining veins of Qian Shan extend from the northeast to the southwest, forming a variety of landform types combining low mountains, hills, plains, land and beaches. The natural composition is generally "six mountains, one water and three fields". [ 1]
Climate type
Wafangdian belongs to the warm temperate continental monsoon climate zone, with four distinct seasons, the annual average temperature is 9.3℃, the frost-free period is 165- 185 days, the average precipitation is 589-743 mm, and the annual total solar radiation is 143.3 kcal/cm2. [7]
hydrology
There are large and small rivers 1 18 in wafangdian city * *, and the river basins from large to small are Fuzhou River, Dasha River, Dufu River, Gulan River, Taowei River, Antarctic River, Yongning River, Jiudao River, Anzi River, Hongyanhe River and Huitou River, among which Dufu River is the boundary river, Dasha River and Anzi River. Fuzhou River, the second largest river in Dalian, originated at the southern foot of Laomaoshan Mountain in Yitong, pulandian city. Pulandian city pine, Deli Temple, Taiyang, Laohutun, Fuzhou, Xianyuwan, Yangjia, Santaizi and other towns 18 join the Bohai Sea at Laoyangtou, Xilan Banner, Santaizi Township. Total length of main stream 137km. There are 8 first-class tributaries, including 4 on the left bank, with Lancang River as the largest; There are four on the right bank, with Jiudaohe as the largest. The river belongs to a mountain stream, and the average river gradient is 1.5‰. [8]
5 Natural resources
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mineral resources
Up to 20 13, there are more than 30 kinds of metallic and nonmetallic deposits in wafangdian city. In particular, nonmetallic minerals have large reserves and high grade, among which granite, marble, limestone, clayey shale and sea pebbles have a reserve of about 650 million cubic meters. Gold, silver, zinc, phosphorus and other mineral deposits also have considerable reserves. The diamond reserves account for 54% of China's proven reserves, mostly octahedral and 12 faceted, with excellent texture, complete crystal shape and crystal clear color, and the jewelry-grade content accounts for 70%. [9]
Wafangdian city is rich in natural mineral springs, pure and sweet, containing 16 kinds of trace elements beneficial to human body, such as strontium (Sr), Bromine (br), radon (Rh), low sodium salt (Na) and metasilicic acid (H2SiO3). By 2065,438+03, the state and province had identified 9 places and developed 4 places. There are high-quality underground thermal resources in the territory, located in the underground thermal mineral spring of Longmentang in Xutun Town, with a water temperature of 63℃ and a daily water supply of 2,000 tons, containing many kinds of trace elements 10 required by human body. [9]
Limestone resources in wafangdian city are widely distributed, spanning three geological ages, with high quality and large reserves. CaO content is mostly 50%~53%, and most of it is exposed on the ground, distributed in more than 10 towns, with an area of 327. 1 km2 (20 13), accounting for 8.62% of the total area of wafangdian city, with a storage capacity of 65,433. [9]
water resource
The largest river in wafangdian city is Fuzhou River. As of 20 13, the basin area of Fuzhou River is 1638km2, of which Wafangdian area is 1342.7 km2, and the average annual runoff of the basin is 342 million m3. There are two large reservoirs, Songshu Reservoir and Dongfeng Reservoir, and 1 medium-sized reservoir-Qidaofang Reservoir. There are three medium-sized reservoirs on the tributaries-Jiulong Reservoir, Lianhua Reservoir, Dahe Reservoir and seven small reservoirs. 197 1 pine reservoir is built in the upstream. After reinforcement, the drainage area is controlled to be 302.4km2, the total storage capacity of the reservoir is 167m3, the storage capacity of Li Xing is 9 102m3, and the Dongfeng reservoir is built in the downstream 1992, with the total storage capacity 1.