Natural resources of Mianyang
In 2014, the annual precipitation of Mianyang City was 19.845 billion cubic meters, the surface water resources was 11.893 billion cubic meters, the total annual water resources was 11.882 billion cubic meters, and the annual average water resources per capita was 2196 cubic meters. The water quality of 478 km long main rivers in the city is: 435 km of class II water area, accounting for 91% of the evaluated river length, and 43 km of class IV water area, accounting for 9% of the evaluated river length.
In 2014, the agricultural land in Mianyang City was 1797661.4 hectares, including 401625.83 hectares of cultivated land, 52261.51 hectares of garden land, 1135319.61 hectares of forest land, 47010 hectares of pasture land and 161444.41 hectares of other agricultural land; 121125.49 hectares of construction land, including 103466.29 hectares of residential industrial and mining land, 9371 hectares of transportation land, 8287.77 hectares of water conservancy facilities land, and 10759.13 hectares of unused land Among them, 72761.63 hectares of unused land and 35197.5 hectares of other land are used.
In 2014, according to the survey and statistics, the known lower plants in Mianyang included fungi and lichen plants, including 13 orders, 60 families, 149 genera and 497 species of Ascomycetes, and the higher plants included 9 classes, 66 orders, 260 families, 1366 genera and 3972 species in 4 phyla of Bryophyta, Pteridophyta, gymnospermae and Angiospermae. According to the list of national key protected wild plants (the first batch) approved by the State Council on August 4, 1999. There are 12 species of national first-class key protected wild plants, such as Davidia involucrata and Taxus chinensis. There are 38 species of wild plants, such as water fern and Chinese fern.
In 2014, according to the survey and statistics, there are 791 species of vertebrates, 32 orders, 109 families and 1257 species of invertebrates, 6 classes, 33 orders, 241 families and 1257 species of invertebrates. Among them, there are 18 species of wildlife under national first-class key protection. There are 60 species of wild animals under the state's second-class key protection, such as the little panda. Mianyang is an important ecological barrier area in the upper reaches of the Yangtze River, a key area for biodiversity protection and one of the main habitats for wild giant pandas. The conservation and management of giant pandas and their habitats play an important role in Sichuan. Pingwu County is the county with the largest distribution of giant pandas, accounting for 1 / 5 of the country's wild giant pandas. The provincial key protected wild animals include red fox, leopard cat, hairy crested deer, Coleoptera striatellus, common cormorant, egret, Chinese forest frog, etc.
As of 2014, 56 minerals including iron ore, manganese ore, lead-zinc ore, tungsten ore, gold ore, silver ore, phosphate ore, sulfur ore, crystal, calcite, limestone, dolomite, bentonite, quartz sandstone for glass and natural gas have been found in Mianyang City, with more than 400 mineral sites, including 73 ferrous metals, 25 non-ferrous metals, 70 precious metals and more than 200 non-metallic minerals. There are 26 mineral types with proven reserves, including 74 industrial deposits. By the end of the year, 32 minerals were developed and utilized in the city.
The mineral reserves of Mianyang City occupy an important position in Sichuan Province: manganese mine in Pingwu County, bentonite in Santai County and Yanting County, sand for casting mold and shale for cement batching in Jiangyou City rank first in the province; quartz sandstone for glass, dolomite for metallurgy and natural gas in Jiangyou City rank the third in Sichuan Province; according to the distribution of counties and cities, the mineral resources in Pingwu County are metal ores It is mainly produced in gold, iron, manganese and lead-zinc mines; other counties and urban areas are dominated by non-metallic minerals, such as limestone and pyrite in Jiangyou City, limestone and phosphorite in Anxian County, limestone, silica and slate for facing in Beichuan Qiang Autonomous County, bentonite in Santai County and Yanting County, shale and sandstone for brick and tile in Fucheng and Youxian. Natural gas is widely distributed in Mianyang City, with the exception of Pingwu County, Beichuan Qiang Autonomous County and Anxian county.
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