Characteristics of Meijiang River Basin

Meijiang River runs through most areas of Meitan County. The basic characteristics of the watershed landform are that the upstream and downstream ends are high, and the valleys are vertical and horizontal, which is the landform of Zhongshan valley. The middle reaches are relatively flat, with low hills and flat dams and concentrated contiguous cultivated land; Most of the mountains in the north are arranged in the north-south direction, with hills and dams embedded in them; The mountains in the south are intermittent, with staggered peaks and valleys, less flat land and more terraced slope soil. The comprehensive reflection of various landform types in the county has formed a pattern of staggered distribution of karst landforms and normal landforms, which has led to the diversification of natural landscape structure types. The land along the Meijiang River is fertile and the cultivated land is concentrated, which is the main grain producing area.

The climate in the basin belongs to subtropical mild and humid climate zone, which has obvious continental monsoon climate characteristics. The climate is mild, warm in winter and cool in summer, with four distinct seasons, water and heat in the same season, long frost-free period and less sunshine. With the different altitude and landform types, the climate difference is obvious. The annual average temperature is 14.9℃, with abundant rainfall. The annual average rainfall is 1 14 1.3mm, with the summer rainfall accounting for 4 1.2% and the winter rainfall accounting for at least 6. 1%. The sunshine condition is poor, which is one of the areas with less sunshine in China, with an average annual sunshine number of 650. The annual total radiation is 3484 MJ/m2, which is in the low value area of China, with more rainy days, and the scattered radiation accounts for 65% of the total radiation, which is beneficial to the growth of leafy tea. The basin is rich in tea resources and is the largest tea planting and producing county in Guizhou Province. According to the survey, by the end of 2005, the total area of tea gardens in the county was more than 97,300 mu, of which the area of tea gardens put into production has grown to nearly 60,000 mu (9,000 mu of state-owned tea gardens and 50,000 mu of farmers' tea).

Meijiang river basin is rich in tourism resources. Along the National Highway 326, within 30 kilometers from the county seat, there are five natural landscapes, including Qinzhou-Sandaohe, Meijiang Landscape Corridor, Xiangushan, Baimianshui and Qingjiang Lake-Chahai, and 55 cultural landscapes and tea culture attractions in the county town, with an area of 180 square kilometers. It integrates many scenic spots, such as landscapes, lakes, canyons, caves, drifting, rivers, wildlife and cultural relics, and has the characteristics of strangeness, beauty, danger and concealment. Formed Meijiang scenic spot.