CDM-ARP杉木林碳汇监测方法学研究

为满足浙江省重点产杉区造林再造林项目杉木林的碳汇监测需要,利用杉木Cunninghamia lanceolata立地数量化模型、定量间伐技术、生长收获模型和生物量模型等,区分不同立地条件,采用定量方法,并考虑间伐因素,建立了清洁发展机制造林再造林项目（CDM-ARP）杉木林碳汇监测方法学,对杉木林分碳密度、碳储量和二氧化碳净吸存量进行监测。监测方法分为项目规划阶段（造林前）预测和林分生长阶段（造林后）监测。选择易测定的碳库作为监测对象,并用常规测树因子来估测较难测定的各器官生物量和碳汇量。该方法科学准确,省时省力,成本低廉,快速高效。     

沿海滩涂甘紫菜Porphyra tenera Kjellm.色素的抗氧化性研究

[目的]为沿海滩涂甘紫菜的进一步研究与开发应用提供科学依据。[方法]采用乙醇浸提法提取沿海滩涂甘紫菜干燥藻体色素,分别用Fenton反应法和DPPH法测定该色素对羟自由基、DPPH.的清除率,研究其抗氧化性。[结果]当沿海滩涂甘紫菜藻体色素、BHT的浓度为0.10 g/L时,其对羟自由基的清除率分别为57.2%和67.8%。沿海滩涂甘紫菜干燥藻体色素对DPPH.有较明显的清除作用,且其清除作用在0.05~0.80 g/L范围内随浓度的增加而增强。0.10 g/L的BHT对DPPH.的清除率为75.8%。当沿海滩涂甘紫菜干燥藻体色素、BHT的浓度均为0.10 g/L时,色素对羟自由基、DPPH.的清除率分别是BHT的84.4%和86.0%。[结论]沿海滩涂甘紫菜干燥藻体色素具有较强的抗氧化活性。     

生态公益林造林与抚育技术综述

综合介绍了生态公益林造林与抚育技术,对造林与抚育各工序的技术要点进行了论述,能对生态公益林的造林与抚育提供一定的参考。     

浅析林业造林方法在实际造林营林工作中的应用

社会经济不断发展,人们对环境保护工作更加重视;保护生态环境是林业资源的重要 工作内容之一,并且其规模逐渐扩大,林业资源迅速发展,首先实现生态环境的建设;其次,带动 了经济效益显著提高。但是,我国目前存在林业资源不足的现象,针对目前林业资源的现状与 不足,采取相应的措施,采用合适的造林对策,提出有关的对策和建议,对林业可持续发展起到 了直观重要的意义。     

试论雨季造林技术

近年来,随着人们生态环保意识不断增强,各地都在进行植物的保护与植树造林。雨季 造林比较便民,山区大多数才用此方法。     

低效乔木林改为竹木混交林试验初报

大面积的低效林严重阻碍林业可持续发展。为探索将低效乔木林改为竹木混交林的适宜条件和措施,通过在低效乔木林中栽植楠竹,研究了林地坡向、林分郁闭度、林地清理方式、竹苗类型以及造竹密度对楠竹生长的影响。结果表明：最适宜楠竹生长的低效林郁闭度为0.3,采取带状劈割后,栽植楠竹原丛苗,造竹密度500丛/hm²;营建的林分第4年郁闭成林,第6年进入收益期,第7年新竹平均胸径达6.9 cm,竹子覆盖度为60%,竹木混交林状态基本形成。林地坡向对楠竹生长无影响,阳坡和阴坡均适宜于楠竹生长。     

狭叶方竹陡坡耕地造林试验初报

为探索提高狭叶方竹陡坡耕地造林成活率的技术措施,确保在退耕还竹中成功应用,通过母竹类型、造竹时间、造竹密度、覆盖措施、混交树种等技术措施对成活率、发笋率、收益年限和景观效果的影响进行试验。结果表明：通过合理的技术措施,狭叶方竹陡坡耕地造林成活率、发笋率均达到92%,其中选取2～3a生母竹2株以上1丛进行移栽,开春后造竹成活率比冬季高6%,有机物覆盖措施在冬季造竹中应用效果明显,能提高造竹成活率10%。造竹密度为1667丛/hm2时,第四年即进入收益年限。狭叶方竹母竹移栽有地上竹竿干枯后竹篼鞭芽成活发笋现象,凡成活的竹篼鞭芽均能发笋。混交乔木树种在初期因冠幅小郁闭度低而对狭叶方竹生长未有明显影响。乔木树种选择银杏和香樟配置景观效果表现明显。     

Behaviour of recreational spearfishers and its impacts on corals

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Genetic connectivity of the South American fur seal (Arctocephalus australis) across Atlantic and Pacific oceans revealed by mitochondrial genes

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Mangrove management for climate change adaptation and sustainable development in coastal zones

Due to their prevalence in developing countries and the range of ecosystem services they provide, projects aimed at promoting mangroves align with several of the UN Sustainable Development Goals—specifically Goals 13, 14, and 15—which concern adaptation to climate change and the sustainable management of forest and coastal resources. Although mangroves themselves are sensitive to climate change, they also provide services that would help reduce damages, by sequestering carbon, enhancing coastline stability, and protecting coastal settlements from tropical storm surges. In particular, mangroves can rapidly colonize and stabilize intertidal sediments, promoting coastal accretion to reduce the impact of sea level rise. The Government of Bangladesh has established mangrove plantations with the intent to accelerate accretion and stabilize 120,000ha of coastland. As a case study, this paper uses GIS data on coastal dynamics and land cover to evaluate the effectiveness of mangrove plantations for facilitating accretion and preventing erosion in Bangladesh. The results indicate that plantation areas experience greater rates of accretion relative to erosion than non-plantation areas, confirming that mangroves have an important role to play in the sustainable development of coastal regions.