Heli Forestry Bureau, tangyuan County, Jiamusi City, Heilongjiang Province

Heli Forestry Bureau

Located in the northeast of Heilongjiang Province, heli Forestry Bureau has an operating area of 71316 hectares, of which the land area is 71193 hectares, accounting for 99.83% of the total area, and the inland water area is 123 hectares, accounting for 0.17% of the total area.

Location and scope

Heli forestry bureau is located in the southeast of Xiaoxing'an Mountains, facing Sanjiang Plain. The forestry bureau is located in Heli Town, Tangxian County, with the geographical coordinates of 129 ° 38 ′ 22 ″ e to 130 ° 7 ′ 53 ″, 46 ° 59 ′ 35 ″ - 47 ° 19 ′ 45 ″ n. It is adjacent to Hegang Forestry Bureau in the northeast, Nancha Forestry Bureau and Jinshantun Forestry Bureau in the northwest, and Heli Town, Yude Township and Taiping Forestry Bureau in Tangyuan County in the southeast Sichuan is a neighbor. The whole construction area is 22 km long from north to South and 35 km wide from east to west.

Woodland resources

In the land area of the forestry bureau, the forest land area is 60109 hectares, accounting for 84.28% of the land area, the wasteland area is 116 hectares, accounting for 0.16% of the land area, the agricultural land area is 1040 hectares, accounting for 1.46% of the land area, the difficult to use land area is 6407 hectares, accounting for 9.00% of the land area, the other land area is 3655 hectares, accounting for 5.12% of the land area, and the forest coverage rate is 81.5%. among the woodland areas, the forest area is 58092 hectares, accounting for 96.78% of the woodland area, the open woodland area is 604 hectares, accounting for 10.1% of the woodland area, the yaqiao forest area is 6 hectares, accounting for 4.01% of the woodland area, the non standing woodland area is 1272 hectares, accounting for 2.12% of the woodland area, and the nursery area is 47 hectares, accounting for 0.08% of the woodland area. In the forest area, the coniferous pure forest area is 18933 hectares, accounting for 32.62% of the forest area, the broad-leaved pure forest area is 7759 hectares, accounting for 13.37% of the forest area, the coniferous mixed forest area is 2587 hectares, accounting for 4.46% of the forest area, the broad-leaved mixed forest area is 20201 hectares, accounting for 34.81% of the forest area, the precious mixed forest area is 610 hectares, accounting for 1.05% of the total forest area, and the coniferous and broad-leaved mixed forest area is 1% 7946 hectares, accounting for 13.69% of the forest area. In the forest land without standing trees, the area of unforested forest land is 450 hectares, accounting for 36.48% of the forest land without standing trees, and the area of suitable forest swamp is 794 hectares, accounting for 57.56% of the forest land without standing trees.

Forest resources

At the end of 2003, there were 2862762 cubic meters of all kinds of living trees in Heli Forestry Bureau, including 2818653 cubic meters of forest land, accounting for 94.96% of the total living trees, 10502 cubic meters of open forest, accounting for 0.66% of the total living trees, and 33607 cubic meters of scattered trees, accounting for 1.17% of the total living trees. The volume of dead and fallen trees is 622 cubic meters.

Operation status

Heli Forestry Bureau was developed in 1952, built the central forest farm in 1956, and expanded the Forestry Bureau in 1958. After more than 40 years of development, it has become a forest industrial base with a certain scale integrating forest management, timber production, forest products industry, diversified management and social services, which has made great contributions to the socialist construction. By the end of 2001, it had produced 2.784 million cubic meters of timber There are 329000 cubic meters of sawn timber, 191000 cubic meters of particleboard and 14000 cubic meters of plywood. The total area of artificial forest is 39743 hectares, and the actual reserved area is 33915 hectares. Among them, 18 898 hectares have been planted, 450 hectares have not been planted, 14 403 hectares have been planted under the canopy, and the conservation rate is 85.2%. The accumulated tax paid to the state is 38.799 million yuan.

hydrometeor

The North-South mountains divide helilin into East and west water systems. In the west is the zhulabila river system, a tributary of Tangwang River. In the East is the toudao ALinDa River, FASI River, Gejin River and Jike river system. The five rivers of East and west water systems are the main rivers in the region. The flow of toudao ALinDa river is 25 km, the flow of Gejin river is 66 km and the flow of zhulabila river is 60 km. The climate of the forest area belongs to the mid temperate continental monsoon climate. It is windy and dry in spring, warm and rainy in summer, with more southwest wind, rapid cooling in autumn, cold and dry in winter, with more northwest wind. The annual average temperature is 1-2 ℃, the maximum temperature in July is about 35 ℃, the average temperature is 22 ℃, the minimum temperature in January is - 41 ℃, the average temperature is - 22 ℃, and the annual effective accumulated temperature is 2100 ℃ - 2400 ℃. The annual average precipitation is 570-640mm, and the precipitation from July to August accounts for half of the whole year. The frost free period is 100-115 days, and the frost period is from September 15 to May 30.

Soil vegetation

The representative soil in the forest area is brown forest soil in mountainous area. The soil types include zonal soil, dark brown soil, non zonal soil, meadow soil and swamp soil. The distribution law of the soil is affected by land type, terrain and vegetation. The typical dark brown soil is in the low mountains and hills with good drainage, and the thin layer of typical dark brown soil is in the middle. The mountain top and ridge are mostly mountainous original dark brown soil or eroded dark brown soil Swamp or swamp meadow soil is distributed in the low-lying water area of the bank. Meadow soil is distributed in riparian platform, mountain lowland and valley edge. There are three soil types, six sub types and six soil layers in this area. the vegetation in the forest area belongs to Changbai Mountain flora, and contains subtropical plant elements. With the increase of altitude, the plant community distribution is obvious, which can be divided into arbor forest zone, shrub zone, low shrub herb mixed community. There are herbaceous, liana, shrub and other hygrophytic flora belts in Goutang low-lying swamp, and moss lichen plots in some Alpine shady slopes.

Topography

The average altitude is only 200-500 meters, and the highest altitude is 864.8 meters. There are 10 mountains more than 800 meters, which are distributed on the watershed of the northwest border of the forest region. The overall terrain is high in the West and low in the East. The East is connected with the low hills and plains. The mountains are undulating vertically and horizontally. The mountains are round. The sunny slope is steep and short, and the shady slope is gentle and long. The average slope is 10-20 ° and the maximum slope is about 30 °. address: Tangyuan County, Jiamusi City, Heilongjiang Province