Report on the geographical investigation of Zhongshan.

Zhongshan City is located in the south-central part of the Pearl River Delta, bordering the lower reaches of the Beijiang River in the west, Panyu City and Shunde City in the north, Jiangmen City, Xinhui City and Doumen County in the west, Zhuhai City in the southeast, and facing Shenzhen City and Hong Kong across the Pearl River Estuary across the Lingdingyang Ocean. The whole city covers an area of 1800. 14 square kilometers, and the registered population at the end of the year is 1998. Zhongshan is a famous southern city named after the great revolutionary forerunner Dr. Sun Yat-sen, and also a famous hometown of overseas Chinese in Guangdong Province. There are more than 600,000 overseas Chinese and compatriots living in Hongkong, Macau and Taiwan Province, and they are distributed in 64 countries and regions on five continents. Zhongshan City is located at 2211'~ 22 46 north latitude and113 09' ~13 46' east longitude. The terrain is composed of mountains and hilly platforms, the continental shelf is uplifted, and the mouth of the Pearl River is alluvial plain and beach. It belongs to the south subtropical monsoon climate, with sufficient light and heat and abundant rainfall. The average annual temperature is 265,438 0.8℃, and the average annual precipitation is 65,438 0.748.3mm. The water system in Zhongshan City can be divided into two parts: plain river network and low mountain and hilly river network. Among the eight major waterways of the Pearl River, Modaomen, Hengmen and Li Hongqi pass through the city and enter the sea, with runoff of 92.3 billion cubic meters, 36.5 billion cubic meters and 20.9 billion cubic meters respectively. The main waterways are Jiya Waterway, Xiaolan Waterway, Hengmen Waterway, Huangshali Waterway, Huangpu Waterway, Shiqi River, Beitaixi River and Dahuan River. Ma Dafeng Waterworks in Xiaolan Waterway, Xijiang Road Spring Water Plant and Yangtze River Reservoir have been designated as first-class water source protection areas. The main soil types in Zhongshan City are lateritic red soil, paddy soil, alkaline paddy soil, coastal salt marsh soil and coastal sandy soil. The natural vegetation is dominated by plantation and natural evergreen monsoon forest, while monsoon evergreen broad-leaved forest and mangrove forest are scattered, and the forest coverage rate is 12.95%. Cuiheng-Wugui Mountain Scenic Area has been opened up, and the suburban ancient fragrant forest is a suburban forest park, and agricultural ecological environment protection zones have been established in the north, west and south of the city. Urban ecological park 100 hectare, with green coverage rate of 35.96% and per capita green area of 9.39 square meters. Among them, Zimaling Park covers an area of 87.53 hectares and is one of the largest parks with both urban and ecological functions in Guangdong Province. The development of Zhongshan tourism in urban tourism has experienced the development process from scratch, from less to more, from individual to group, from star to network. In recent ten years, the average annual growth rate of tourism is 16%. With its unique geographical environment and humanistic environment, Zhongshan has attracted a large number of domestic and foreign guests and become a new tourist city, which is known as "celebrity resort, green trees and green mountains, small town in the south and rich hometown of overseas Chinese". Sun Yat-sen Memorial Hall is a famous group of tourist attractions in Zhongshan City. Including Sun Yat-sen's former residence, Sun Yat-sen's former residence exhibition hall, Sun Yat-sen memorial hall and Sun sun yat-sen memorial middle school. There are also many historical sites in Zhongshan City, such as Fufeng Pagoda, Xishan Temple with winding paths leading to secluded places, the first peak of Xishan Mountain, Liumian Ancient Road with towering ancient trees, ancient fragrant forest with dense forests, Xiaolanghuan under the bridge, Charity Square, Long Rui Ancient Pagoda, Flower Exploration Square and Song Emperor Relics reminiscent of the past. In terms of natural scenery, there are scenic Wugui Mountain, cool and thorough Ying Ge Lake, natural and beautiful sea manor, small bridges and flowing water full of water town customs. In recent years, Zhongshan has also formed a series of distinctive tourist attractions: Zimaling Park and Sun Wen Memorial Park are suddenly enlightened, and Sun Xi Cultural Pedestrian Street, Dongsheng Garden and Dongming Garden are elegant and beautiful. With the development of Zhongshan industry, bright ancient town lighting and antique mahogany furniture have also become new attractions to attract tourists. In addition, March Red Litchi around the city, Jiuzhouji Longan, Sheng Mao Banana, Shenwan Pineapple, Shi Qi Pigeon, Yangtze Crispy Carp and Zui Xiang Garden Almond Cake are all famous local products that attract tourists. Urban Economy Zhongshan is one of the earliest coastal open cities in China. 1998 the city's GDP was 24.903 billion yuan, an increase of 13.2% over the previous year. The total industrial and agricultural output value was 60.275 billion yuan, an increase of 16.8% over the previous year. The total value of foreign trade exports was $310.3 billion, an increase of10.3% over the previous year. The total industrial output value was 57.655 billion yuan, up 17. %. The actually utilized foreign capital was $5 1 billion, the local fiscal disposable revenue was $0/0.20 billion, and the fiscal expenditure was $0/0.30 billion, up by10.7% and 20.4% respectively over the previous year. The balance of savings deposits of urban and rural residents is 322 1 100 million yuan, the rural per capita income is 437 1 yuan, and the average annual salary of employees is 1 1657 yuan. There are more than 7,500 factories and enterprises in the city, with high-tech industries as the leader and six high-tech industries, such as new energy, new materials, electronic information, mechatronics, high-tech textiles and bioengineering, taking shape, forming a number of pillar industries such as household appliances, fine chemicals, textile and chemical fibers, glass building materials, metallurgical machinery, electronics, packaging, printing, medicine, food and beverage. It is a light industry in Guangdong Province. Agricultural production has steadily increased, and the production layout has become more reasonable. An agricultural pattern of "three highs" with equal emphasis on "rice bags" and "Chinese cabbage seeds", a combination of suburban and export-oriented, and equal emphasis on demonstration bases and leading enterprises has been initially formed. Seven production bases, including high-quality rice, aquatic products, animal husbandry, vegetables and fruits, fast-growing and high-yield forests, flowers and deep processing of agricultural and sideline products, have been established. The tertiary industry in Zhongshan City is increasingly prosperous, and transportation, post and telecommunications, water supply and power supply are developing rapidly. Since the reform and opening up of urban development and construction, Zhongshan has developed from an agricultural county with "small town and big village" into a modern city with industry as the main body, medium scale, urban and rural integration, reasonable layout, supporting facilities and complete functions. The built-up area of the central city has expanded from 5.6 square kilometers in 1998 to 26.59 square kilometers. Zhongshan always adheres to the policy of "high starting point planning, high standard construction and high efficiency management" in urban construction. 1993, the city's 1992 to 2000 urban and rural construction master plan was completed and implemented. Under the guidance of the overall planning, the residential quarters, Torch Development Zone, villages and towns, and Sun Wen West Road Cultural Tourism Pedestrian Street were planned in detail. Paparazzi pit and Tiger pit landfill and daily treatment have been completed.