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松花湖水源涵养林面积辽阔,跨蛟河、永吉、桦甸三县和吉林市郊区的11个乡。位于第二松花江中游。总土地面积412,273公顷。森林复被率为59.1％。在幅员总面积中,林业用地297,366公顷,占72.1％;农业用地42,264公顷,占10.3％;水域38,754公顷,占9.4％;其他用地只占少量。湖区森林,是松花湖外围屏障。它控制水土流失,调节入湖水量,对延长水库的使用寿命发挥着重要作用。松花湖年平均入湖水量为140亿立方米,年淤泥量为525万立方米,仍然
Songhua Lake water conservation forest area is vast, span Jiaohe, Yongji, Huadian three counties and 11 suburbs of Jilin City. Located in the middle reaches of the second Songhua River. The total land area is 412,273 hectares. The forest recovery rate was 59.1%. Of the total area of forestry, 297,366 hectares of forestry land is occupied, accounting for 72.1%; agricultural land is 42,264 hectares, accounting for 10.3%; and water area is 38,754 hectares, accounting for 9.4%; other land uses only a small amount. Lake Forest, Songhua Lake is the outer barrier. It controls soil erosion, regulates the amount of water entering the lake and plays an important role in prolonging the service life of reservoirs. Songhua Lake, the average annual water into the lake is 140 billion cubic meters, the annual sludge volume of 5250000 cubic meters, still