The Geographical Environment of Pan 'an County

Pan 'an County is located in the mountainous area of central Zhejiang, with a length of 54 kilometers from north to south and a width of 47 kilometers from east to west. Pan 'an County is located in the south wing of the Yangtze River Delta Economic Zone, 300 kilometers away from Shanghai, and belongs to the category of Shanghai Four-hour Economic Zone. The administration belongs to Jinhua City, Zhejiang Province, with Yongkang, Dongyang and Hengdian in the west, Shaoxing, Shengzhou and Xinchang in the north, Ningbo, Fenghua, Taizhou and Tiantai in the east, Lishui, Jinyun and Xianju in the south.

Pan' an is located in the middle of Zhejiang, east longitude120.17' ~120.47', north latitude 28.49'~ 29. 19'. It is adjacent to Tiantai in the east, Xianju and Jinyun in the south, Dongyang and Yongkang in the west and Xinchang in the north. There are more than 5,200 famous peaks, of which 63 are above 1 000m, and the Qingming Peak (Qingmeijian) with an altitude of 1 3 14m is the highest peak, enjoying the reputation of "the country with thousands of mountains".

The exposed strata in the territory are mainly pyroclastic rocks with complex lithology and strong phase transition. Volcanic rocks are widely distributed in the county, and the exposed area accounts for more than 80% of the county. It can be roughly divided into two types: extrusive rocks and subvolcanic rocks, with extrusive rocks accounting for the majority and intrusive rocks scattered. The stratigraphic structure of China is dominated by fault structure, and the fold structure is undeveloped. The county seat is a pure mountain landform with low mountains as the main part. The mountains in the territory are centered on the peak of Dapan Mountain, and the trunk line extends from north to south. There are 63 peaks 1000 meters above sea level in the county, 64 1 seat in Gao Shanfeng below 500 meters above sea level, 17200 hectares in high hills above 350-500 meters above sea level, and 20,000 hectares in low hills and beaches below 350 meters above sea level. There are 82 known mineral deposits, mineralization points and information points in Pan 'an County. Twenty-five kinds of minerals have been discovered in the county, and non-metallic minerals account for the main position.

The fluorite deposit is 58 1.5 million tons. Together with the surrounding mines, the * * * deposit is about 674,500 tons. It is mainly distributed in Zhang Si-Ding Jie, Jiuhe-Luanchuan, An Wen and Lengshui.

Montmorillonite Clay Jianshan Montmorillonite Clay Mining Area covers an area of 4 square kilometers, with a controlled resource reserve of 654.38+009,300 tons and a predicted prospective resource of more than 20 million tons, mainly distributed in Tangtou Village, Jianshan Town, Tengtangang Village, Chencun Village and Sicun Village. It is the weathering product of tertiary basalt. Decorative granite The resources of decorative granite in the county are more than 50 million cubic meters.

Quartz rocks are mainly distributed at the foot of Rugongjian Mountain, where huzhuang in Incheon Town and Lengshui Town meet, and the predicted resources are 300 million tons. Quartz rocks are also distributed in Huangkeng around the forest, Anyang in Pan Da, Luolingtou in Fengshu and Donggang in Tongdian, among which Linhuangkeng has controlled more than 300,000 tons of resources.

Clay for brick and tile is mainly distributed in Xinwo Town, Jianshan Town, Yushan Town, Shenze Town, Incheon Town, Wancang Town and Shang Hu Town. It is mainly formed by the weathering of mud shale in Guantou Formation and Tidal Tide Formation of Lower Cretaceous, and part of it is Quaternary loam containing sand and gravel. The wild plants in this county belong to subtropical type. Natural secondary forest, artificial timber forest and economic forest are mixed to grow into evergreen coniferous forest and broad-leaved forest. There are 577 species of woody plants in the county, belonging to 86 families. The rare tree species under national second-class protection include Magnolia Officinalis, Magnolia Officinalis, Taxus chinensis, Torreya grandis, Pinus bungeana, Eucommia ulmoides, Xia Lamei, Ginkgo biloba and so on 10. Jin Songqian DBH 1.8m in Dongshan Village, Wancang Township, with a height of 22m and luxuriant foliage like canopy, is over 800 years old. There are 5 Cryptomeria fortunei, 3 Pinus bungeana and 4 acorns in Shanze Village, Shang Hu Town, with DBH above 1 m and the age of the trees is about 800 years. Belonging to the national third-class protected tree species, there are Cinnamomum camphora, Phoebe bournei, Phoebe bournei, orchid trees, mangroves and so on. There are 944 species of herbs in 129 families.

Wild medicinal materials

According to the records of Dongyang, Yongkang, Jinyun, Tiantai and other counties, there are 208 species in the county. According to the investigation of 1986 Chinese herbal medicine resources, there are 1055 kinds of plant medicinal materials in the county. Perennial collection includes Radix Peucedani, Poria, Eucommiae Cortex, Radix Platycodi, Radix Aconiti Kusnezoffii, Cortex Magnolia Officinalis, Ramulus Uncariae cum Uncis, Rhizoma Pinelliae, Flos Lonicerae, Flos Chrysanthemi Indici, Fructus Crataegi, Herba Lycopodii, Radix Linderae, Polygoni Multiflori Radix, Radix Salviae Miltiorrhizae, Rhizoma Gastrodiae, Bambusa Bambusae, Rhizoma Bletillae, Herba Schizonepetae, Herba Hedyotidis Diffusae, Cynanchum atratum, Folium Artemisiae Arg There are 20 classes 125 families of invertebrates in the county. Vertebrates are: fishes, amphibians, 15 species, reptiles, 9 families, 26 species, birds, 28 families, 107 species and mammals, 20 families. There are 4 species listed as national 1 key protected animals; There are more than 30 kinds listed in the second-class protection of the state. There are many kinds of provincial protected animals 10 in Zhejiang.

mammal

Precious animals protected at the national level include tigers and leopards (leopard, tortoise and leopard); There are macaque, fragrant raccoon, red muntjac, black muntjac, pangolin, wild goat (goat), jackal, gray wolf, Yellow weasel, raccoon (coyote), yellow muntjac (two-headed owl), green muntjac (spotted owl) and raccoon.

birds

There are merganser, swan and so on. , is a national first-class protected animal; Owls (red-horned owls), woodpeckers, green woodpeckers and spotted woodpeckers are under secondary protection. There are also ground chickens, bamboo chickens, pheasants, cormorants, goshawks, grey herons, bean geese, kites, quails, red-bellied hornbills, wild pigeons, turtledoves, starlings, larks, thrushes, mountain warblers, magpies, cuckoos and cuckoos; Crows, bald crows, western Western jackdaw, red-billed crows, yellow-bellied warblers, goldfinches, sparrows, swallows, etc.

Reptiles

Agkistrodon halys, Cobra, Agkistrodon, Golden Ring Snake, Silver Ring Snake, Bamboo Leaf Green, Two-headed Snake, Pink Snake, Zaocys, Rape Snake, Tortoise, Flower Tortoise, Monopterus albus, Cicada, Gecko.

fish

There are carp, crucian carp, catfish, loach, red neon fish, horse mouth fish, grouper, tiger fish, mullet, eel, eel, loach and so on. In addition, crustacean reptiles include water turtles and soft-shelled turtles. Arthropods are: shrimp and crab. There are mollusks such as mussels and snails.

beneficial insect

There are dragonflies, mantises, Trichogramma, Aphidae, spiders, parasitic flies, tooth age, insect-eating bees, bees, ground bees, bees and so on.