共查询到20条相似文献,搜索用时 15 毫秒
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Claudia Becagli Umberto Di Salvatore Gianfranco Fabbio Ferretti Fabrizio Luca Salvati 《Journal of Sustainable Forestry》2013,32(3):234-250
ABSTRACTThe more and more diffused multifunctional role addressed nowadays to public forests, calls for targeted analysis aimed at highlighting the overall outcome of different practices implemented on the same forest compartment, according to the locally prevailing function. This study was carried out in four Italian beech forests across a latitudinal gradient representative of multiple management history, stand structure, and dominant stand age. We analyze forest structure at the compartment scale before and after silvicultural practices. We aim to explore relationships and similarities between 10 stand attributes (mensurational and structural variables) to identify relevant indicators for the monitoring and management of forest ecosystems. Results indicate changing patterns of correlation and similarity among mensurational variables following practice implementation. A sensitivity gradient to silvicultural practice was finally identified within the four sites investigated as a result of the diverging stand structure. Our approach suggests a way and provides an insight for the design of adaptive forestry management practices required to meet environmental targets, in addition to the already acknowledged supply of primary goods and services. 相似文献
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在公益林区布设固定样地,定期、定点对公益林林木材积生长率进行调查,结果表明,2010年与2007年相比较,样地1、样地2、样地3、样地4、样地5的活立木材积净生长量分别为0.642 8 m3、0.641 9 m3、0.952 6 m3、1.179 4 m3、0.237 4 m3、3.627 1 m3,生长率分别为12.80%、4.73%、8.12%、3.87%、1.52%。对公益林进行有效管护,可以使林分蓄积稳步增长,森林生态功能和经济效益逐年增强。 相似文献
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阐述了耒阳市林业用地和森林资源现状和特点,对征占用林地和社会经济发展过程中存在的矛盾进行了分析,在此基础上提出耒阳市在社会经济发展过程中对征占用林地的需求和建议。 相似文献
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结合林地“一张图”的国家级公益林区划界定探讨——以云南省为例 总被引:1,自引:0,他引:1
为满足新时期国家级公益林保护管理需要,根据国家新修订的国家公益林区划界定要求,本文结合当前森林资源档案现状,总结了国家级公益林区划界定方法及存在主要问题,为国家级公益林保护管理提出建议,为进一步完善国家级公益林管理提供参考。 相似文献
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利用莲都区2004年界定的3.5万hm2重点公益林于2001年和2011年的规划调查和监测复查数据进行对比分析,结果表明,针叶林面积以每年2.5%速度向其它森林类型转变,面积比重由77%调整到58%;单位面积蓄积量年均净增率针叶林6.1%阔叶林3.5%针阔混交林2.4%;郁闭度≥0.5的林分面积由67.3%提高到92.6%,成过熟林的面积由9.1%提高到30.9%,提高幅度针叶林针阔混交林阔叶林。基于分析出的动态变化特征,为公益林下步按森林类型分类建设与管理提供科学依据。 相似文献
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Throughout the history of the world, the best-orchestrated and publicly cohesive reforestation event occurred in South Korea. One of the best-known causes for such a success was the leadership of the government at that time, in particular the president Park Chung Hee. However, from forestry point of view, it evolved from Songgye, a traditional method of forest management evolved in late Choson Dynasty of Korea in reaction to rapid privatization of national forests by the elite class and government officials. Songgye was a unique social institution to promote sustainable use of local forests by local citizens. The primary goals of Songgye were to determine the annual amount of harvest and assign certain areas for specific uses and activities. Songgye also organized various activities within the community to prevent wild fires and illegal logging and smuggling, besides setting up rules and regulations to control activities as well as infringements. Songgye, remembered today as a cultural reminiscence, played a significant role in the success of reforestation of denuded landscapes after colonization and war. 相似文献
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生态公益林建设在社会经济发展中占有重要地位,是林业实现可持续发展的重要措施。通过对牛街镇自然概况及生态公益林建设现状,分析了牛街镇生态公益林建设存在的问题,提出了加强生态公林建设的主要对策,从而实现生态公益林持续、稳定、健康发展。 相似文献
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人工生态公益林不同类型林分的持水功能比较 总被引:1,自引:0,他引:1
分别从林冠层、林下植被层、凋落物层及土壤层对杉木人工生态公益林林冠下营造的细柄阿丁枫、木荷、建柏和杉木纯林的持水功能进行了研究。研究结果表明,林分组成结构的不同导致了其持水功能的差异。不同林分的持水量大小排序为:细柄阿丁枫×杉木混交林>木荷×杉木混交林>建柏×杉木混交林>杉木纯林。林分不同层次的持水量大小排序为:土壤层>林冠层>林下植被和凋落物层。 相似文献
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应用氧弹式热量计进行广西公益林主要树种植物热值的测定,结合森林资源连续清查样地资料,估计广西公益林能量积累及其分配.结果表明:不同树种植物热值有差异,针叶林的热值略高于阔叶林,同一树种不同器官的热值亦有差异,叶的热值高于其他器官的热值,但植物热值的变幅多在18.19~22.72 kJ/g,测定结果与相关文献报道结果相符.广西公益林林分能量累积19 092亿MJ,按优势树种组分:杉木848亿MJ,占4.4%;松类1 754亿MJ,占9.2%;阔叶树16 490亿MJ,占86.4%. 相似文献
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以模拟的王村1组2015年核算公益林户补偿金为研究对象,通过建立林地生态价值评分标准,计算各小班生态价值得分,据此分配整个公益林补偿金,得出科学合理分配集体林地公益林补偿金的一种方法。 相似文献