当前位置: X-MOL 学术Austral Ecol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Forest carbon in lowland Papua New Guinea: Local variation and the importance of small trees
Austral Ecology ( IF 1.6 ) Pub Date : 2014-09-25 , DOI: 10.1111/aec.12187
John B Vincent 1 , Bridget Henning 2 , Simon Saulei 3 , Gibson Sosanika 4 , George D Weiblen 5
Affiliation  

Efforts to incentivize the reduction of carbon emissions from deforestation and forest degradation require accurate carbon accounting. The extensive tropical forest of Papua New Guinea (PNG) is a target for such efforts and yet local carbon estimates are few. Previous estimates, based on models of neotropical vegetation applied to PNG forest plots, did not consider such factors as the unique species composition of New Guinea vegetation, local variation in forest biomass, or the contribution of small trees. We analysed all trees >1 cm in diameter at breast height (DBH) in Melanesia's largest forest plot (Wanang) to assess local spatial variation and the role of small trees in carbon storage. Above-ground living biomass (AGLB) of trees averaged 210.72 Mg ha−1 at Wanang. Carbon storage at Wanang was somewhat lower than in other lowland tropical forests, whereas local variation among 1-ha subplots and the contribution of small trees to total AGLB were substantially higher. We speculate that these differences may be attributed to the dynamics of Wanang forest where erosion of a recently uplifted and unstable terrain appears to be a major source of natural disturbance. These findings emphasize the need for locally calibrated forest carbon estimates if accurate landscape level valuation and monetization of carbon is to be achieved. Such estimates aim to situate PNG forests in the global carbon context and provide baseline information needed to improve the accuracy of PNG carbon monitoring schemes.

中文翻译:

巴布亚新几内亚低地森林碳:局部变异和小树的重要性

鼓励减少因森林砍伐和森林退化造成的碳排放的努力需要准确的碳核算。巴布亚新几内亚 (PNG) 广阔的热带森林是此类努力的目标,但当地的碳估计数很少。先前的估计基于应用于 PNG 森林地块的新热带植被模型,并未考虑诸如新几内亚植被的独特物种组成、森林生物量的局部变化或小树的贡献等因素。我们分析了美拉尼西亚最大的森林地块 (Wanang) 中胸高 (DBH) 直径 > 1 cm 的所有树木,以评估局部空间变化和小树在碳储存中的作用。Wanang 树木的地上生物量 (AGLB) 平均为 210.72 Mg ha−1。Wanang 的碳储存量略低于其他低地热带森林,而 1 公顷子地块的局部差异和小树对总 AGLB 的贡献要高得多。我们推测这些差异可能归因于 Wanang 森林的动态,其中最近隆起和不稳定地形的侵蚀似乎是自然干扰的主要来源。如果要实现准确的景观水平估值和碳货币化,这些发现强调了当地校准森林碳估计的必要性。此类估算旨在将 PNG 森林置于全球碳背景中,并提供提高 PNG 碳监测计划准确性所需的基线信息。而 1 公顷子地块之间的局部变异和小树对总 AGLB 的贡献要高得多。我们推测这些差异可能归因于 Wanang 森林的动态,其中最近隆起和不稳定地形的侵蚀似乎是自然干扰的主要来源。如果要实现准确的景观水平估值和碳货币化,这些发现强调了当地校准森林碳估计的必要性。此类估算旨在将 PNG 森林置于全球碳背景中,并提供提高 PNG 碳监测计划准确性所需的基线信息。而 1 公顷子地块之间的局部变异和小树对总 AGLB 的贡献要高得多。我们推测这些差异可能归因于 Wanang 森林的动态,其中最近隆起和不稳定地形的侵蚀似乎是自然干扰的主要来源。如果要实现准确的景观水平估值和碳货币化,这些发现强调了当地校准森林碳估计的必要性。此类估算旨在将 PNG 森林置于全球碳背景中,并提供提高 PNG 碳监测计划准确性所需的基线信息。如果要实现准确的景观水平估值和碳货币化,这些发现强调了当地校准森林碳估计的必要性。此类估算旨在将 PNG 森林置于全球碳背景中,并提供提高 PNG 碳监测计划准确性所需的基线信息。如果要实现准确的景观水平估值和碳货币化,这些发现强调了当地校准森林碳估计的必要性。此类估算旨在将 PNG 森林置于全球碳背景中,并提供提高 PNG 碳监测计划准确性所需的基线信息。
更新日期:2014-09-25
down
wechat
bug