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商洛地区有国营林场19个,据二类调查资料,经营总面积为20.2万 ha,有林地面积4.9万 ha;总蓄积404.8万 m~3,占全地区森林总蓄积1550.6万 m~3的26.1%。二类调查数据与四五清查数据相比,有林地面积增加约7912ha,蓄积增加约40.2万 m~3。从调查结果发现该区国有林经营方面存在的问题是:①成过熟林比例大,没有合理
There are 19 state-owned forest farms in Shangluo region. According to the survey data of the second type, the total area under management is 202,000 ha, with forest land area of 49,000 ha and total volume of 4,408,000 m 3, accounting for 26.5 million of the total forest area of 15,506,000 m 3 %. Compared with the fourth five-year inventory data, the second type of survey data shows an increase of about 7912ha in area and an increase of about 402,000m3 in volume. From the survey results found that the state-owned forest management problems in the area are: ① over mature forest a large proportion, there is no reasonable