Wenxin county is located in luzhou, yibin two city and yunnan north junction, belongs to the southern mountains of sichuan, located in east longitude 104 ゜ 52 '28 "23" - 105 ゜ 21', north latitude 28 ゜ 04 '28 "- 28 ゜ 27' 18" between. It is 47 kilometers long and 43 kilometers wide. The southeast is contiguous with the county, which is adjacent to the county of yunnan province, and the west is gongxian county, the northwest is the changning county, and the north and jiangan, naxi county and the district. The land area is 1373.17 square kilometers [2], and the cultivated area is 21501 hectares.

landscape

The geological structure of xingwen county is the range of "chuangqian right depression" in the east-west region of sichuan south. The formation of dew from the fourth system of the new world and the new alluvium of the modern river to the Paleozoic Cambrian series of 8 series of 27 groups (group). Xifeng mountain uplift in the south of the county, the whole county is divided into the north and the south, the north is low and south high, and the elevation is 275.6 meters to 1795.1 meters. Southern north high south, elevation 1795.1 m to 501 m. [6] there are four types of geomorphic geomorphology, such as slot dam, hill, low mountain and zhongshan. [5]

climate

Xingwen county is subtropical humid climate, abundant rainfall, frost free period, four distinct seasons, rain and heat in the same season. Over the years an average annual rainfall 1234.7 mm, average temperature 17.4 ℃, average sunshine hours 1010.3 hours. [6]

hydrological

There are 19 rivers and rivers in xingwen county, with a total length of 313.98 kilometers, all of which belong to the Yangtze river system, which brings together the Yangtze river, changning river and yongning river. The river basin covers more than 500 square kilometers. From 100 to 500 square kilometers, there are the yan river, jianwu river, construction river and sediment river. From 50 to 100 square kilometers, there are the bo luk river, the dewin river, the liyan river, the jiuqing river and the didong river (upstream). The total basin area is 1,427 square kilometers.