The geographical environment of Sanshui District

Sanshui District is located in the subtropics, with a south subtropical maritime monsoon climate. Rainfall is abundant but unevenly distributed. Disasters such as floods and droughts occur from time to time. In summer and autumn, it is often affected by tropical storms (typhoons). Lightning disasters are frequent and the area is prone to thunderstorms. Meteorological disasters that affect Sanshui District mainly include: low temperature and rain in early spring, typhoons, heavy rains and strong convective weather (severe thunderstorms, strong winds, hail, etc.) in summer; cold waves in winter, etc.

Temperature: The annual average temperature is 21.9℃. January is the coldest month of the year, and July has the highest temperature. The annual extreme maximum temperature is 39.1℃ (03.7.15); the annual extreme minimum temperature is minus 0.7℃ (57.2.11).

Precipitation: The annual average number of precipitation days (≥0.1) is 154.3 days. The average annual precipitation is 1682.8 mm (April to September: accounting for 80% of the total rainfall). The annual rainy season is divided into two periods: April to June is the pre-flood period, which is mainly caused by precipitation from the frontal trough; July to September is the post-flood period, which is mainly caused by tropical cyclones and the Intertropical Convergence Zone.

Sunshine: The total number of sunshine hours throughout the year is 1721.7 hours. The longest sunshine hours in a year is 218.7 hours in July, and the shortest is 65.5 hours in March.

Thunderstorm: Sanshui is a thunderstorm-prone area, with the average number of thunderstorm days over the years being 81. The trees mainly include: kapok, ficus, camphor, lotus, tallow tree, neem, checkerwood, pomelo, olive, masson pine, neem, weeping willow, benevolent face, fig, yellow tooth fruit, mountain lung, duck foot wood, etc. Bamboos mainly include: bougainvillea, fence bamboo, and pole bamboo. Medicinal plants The main wild Chinese herbal medicines include: sea golden sand, dog spine, drynaria root, light bamboo leaves, reed root, cyperus rotunda, acorus, calamus, Guangdong wolfberry (wild taro), pinellia, asparagus, soil fu Ling, Caojie (Tutai), yam (Huaishan), Qianghuang, Curcuma, Curcuma, Cao Kouren, Heather Vine, Banyan Tree Beard, Chuan Po Stone, Five-fingered Peach, Locust, Foshan Mother, Earth Fructus japonica, Semen chinensis, Semen truncatula, Trichosanthes spp., Wide root vine, Piper longum, Golden cherry tree, Golden cherry root, Snakeleaf, Cassia grass, Money grass, Ginseng locust, Calabash tea (gourd leaf), Qianjin Pull (rat tail), kudzu root, taurus, sanya bitter, gallbladder, neem bark, bauhinia bark, ganglian root, Jiu Bing, hairy holly, soapberry, iron-coated gold, hawthorn leaf, pittosporum Bark bark (kapok bark), kapok, mountain sesame, half maple lotus, red water sunflower, lege king, Tianxiang burner, duck foot bark, cnidium monnieri, purple flower azalea, white flower tea, verbena, five-finger gold, half branch Lianhu, motherwort, parsnip, belladonna root, andrographis, plantain, diffusa, wolfberry, Trachelospermia, dangshen, lobelia, Guangdong Liujinu, Tianjihuang, Guangdong native cowvine (Tuniu seven), geese do not eat grass, Xanthium (sticky head miscanthus), clam grass (shrimp claw grass), Eclipta grass (white flower weed), Jiuli Ming (Senecio glabra), etc.