塞罕坝机械林场森林资源动态变化分析
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摘要
根据塞罕坝三期森林资源清查结果,对塞罕坝森林资源质量、分布格局及动态变化趋势进行了分析。结果表明:在1989—2017年间,森林面积稳步增加,净增森林面积6. 1万hm2;林木蓄积净增长752. 6万m3;幼龄林、中龄林和近熟林趋于均衡,龄组结构进一步合理;树种结构发生改变,华北落叶松始终占主体地位,樟子松和云杉林比例进一步增加。针对人工纯林和天然次生林存在的问题,提出了建设性的措施和建议。
Based on forest resource inventory data in Saihanba Mechanized Forest Farm,forest resource quality,distribution pattern,and dynamic changes in forest area and volume were analyzed. The results showed from 1989 to 2017,both area and volume of forest resources in study area increased steadily.Saihanba obtained 6. 1 × 104 hm2 and 7. 52 × 106 m3 of the net increase in forest area and volume,respectively. The area proportions of young,mid-aged and near mature forests were almost equal,indicating age class structure was gradually reasonable. From the change of tree species structure,Larix principis-rupprechtii was in the dominant position,and the area propotion of Pinus sylvestris var. mongolica and Picea asperata also increased. Based on management problems of plantations and natural secondary forests in the study area,some measures and suggestions were presented.
Based on forest resource inventory data in Saihanba Mechanized Forest Farm,forest resource quality,distribution pattern,and dynamic changes in forest area and volume were analyzed. The results showed from 1989 to 2017,both area and volume of forest resources in study area increased steadily.Saihanba obtained 6. 1 × 104 hm2 and 7. 52 × 106 m3 of the net increase in forest area and volume,respectively. The area proportions of young,mid-aged and near mature forests were almost equal,indicating age class structure was gradually reasonable. From the change of tree species structure,Larix principis-rupprechtii was in the dominant position,and the area propotion of Pinus sylvestris var. mongolica and Picea asperata also increased. Based on management problems of plantations and natural secondary forests in the study area,some measures and suggestions were presented.
引文
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[9]郑小贤.德国奥地利和法国的多目的森林资源监测述评[J].北京林业大学学报,1997,19(3):79-85.
[10]舒清态,唐守正.国际森林资源监测的现状与发展趋势[J].世界林业研究,2006,18(3):33-37.
(1)河北省林业调查规划设计院.河北省塞罕坝机械林场第四次森林资源规划设计调查报告. 2012.
(2)河北省林业调查规划设计院.河北省塞罕坝机械林场总场森林经营方案(2000—2010年). 2002.
[2]张吉祥,吴家森,叶小明.永嘉县森林资源变化动态及发展对策[J].防护林科技,2003(4):45-46.
[3]王定胜,刘景荣.连云港市森林资源动态变化[J].江苏林业科技,2003,30(4):49-51.
[4]国红,陆元昌,洪玲霞,等.基于RS与GIS的西峡县森林资源时空动态变化[J].南京林业大学学报:自然科学版,2005,29(4):53-56.
[5]葛建忠,陈培.海安县森林资源现状及动态分析[J].江苏林业科技,2011,38(1):44-46.
[6]张远,杨彬,殷鸣放,等.山区森林资源遥感动态监测的研究[J].福建林业科技,2005,32(1):30-33.
[7]林进,叶荣华.关于建设国家林业资源和生态环境监测评价体系的几点设想[J].林业资源管理,1998(3):14-19.
[8]肖化顺.森林资源监测中林业3S技术的应用现状与展望[J].林业资源管理,2004(2):53-58.
[9]郑小贤.德国奥地利和法国的多目的森林资源监测述评[J].北京林业大学学报,1997,19(3):79-85.
[10]舒清态,唐守正.国际森林资源监测的现状与发展趋势[J].世界林业研究,2006,18(3):33-37.
(1)河北省林业调查规划设计院.河北省塞罕坝机械林场第四次森林资源规划设计调查报告. 2012.
(2)河北省林业调查规划设计院.河北省塞罕坝机械林场总场森林经营方案(2000—2010年). 2002.