论文部分内容阅读
石泉县地跨秦岭、巴山,除马池小盆地外,全为山陵起伏的低、中山地。但山少乔林,林少巨木,是个以残败次生林为主的林区。为了恢复森林,发展生产,我们组织技术力量,对全县次生林资源进行了摸底调查。一、次生林现状分析(一)次生林资源结构:全县有林地面积为126.95万亩,活立木蓄积323.70万米~3。其中次生林面积121.86万亩,占林地面积的96.0％;蓄积272.76万米~3,占林分总蓄积94.9％;青竹205.5万斤;木竹3601.85万斤。次生林林分蓄积按优势树种分:
Shiquan County across the Qinling Mountains, Bashan, in addition to Ma Chi small basin, all for the mountain ups and downs of the low, Zhongshan. However, the less mountain Qiao Lin, Lin Shaoju wood, is a residual secondary forest-based forest. In order to restore the forest and develop the production, we organized the technical force and thoroughly investigated the secondary forest resources of the county. Analysis of the Present Situation of Secondary Forests (I) Structure of Secondary Forest Resources: The entire county has a total area of 1,260,900 mu of forest land and 32,370,000 m3 of live standing trees. Among them, the secondary forest area is 1,218,600 mu, accounting for 96.0% of the total area of the forest land; the accumulative volume is 2,727,600m ~ 3, accounting for 94.9% of the total volume of the forest; 2,065,000 kg of green bamboo and 360,185,000 kg of bamboo. Secondary forest stand accumulation by dominant tree species points: