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机构地区:[1]黑河市爱辉区林业局,黑龙江黑河164300 [2]吉林省林业调查规划院,吉林长春130022
出 处:《林业调查规划》2013年第3期55-60,共6页Forest Inventory and Planning
摘 要:依据1998年和2008年辽源市二次森林资源调查资料,分析了当地森林资源变化规律。分析结果,辽源市森林资源的质量正逐步提高,森林年均净增率达1.8%,有林地面积增加了648.3hm2,森林覆盖率增加了0.03%。活力木总蓄积增加2 261 408 m3,有林地森林蓄积增加2 443 026m3,人工林面积增长率为5.73%,蓄积增长率为24.50%。文中对研究期内森林面积和蓄积的增加原因进行了讨论。Based on the data of twice forest investigations in Liaoyuan City, the dynamic change of forest resources was analyzed. Results showed that the quantity of forest resources was increasing gradually. The annual growth rate of forest was up to 1.8%. The woodland area reached to 648.3 hm2 from 1998 to 2008, forest coverage rate increased 0.03%. Volume of energy woodland increased to 2261408 m^3 and forest volume reached to 2443026 m^3 , plantation area increased 5.73% , growth rate of plantation volume was up to 24.50%. Increased reasons of forest area and volume in study period were discussed in this pa-per.
分 类 号:S757.2[农业科学—森林经理学]
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