Carbon stocks and fluxes in tropical lowland dipterocarp rainforests in Sabah, Malaysian Borneo.
Carbon stocks and fluxes in tropical lowland dipterocarp rainforests in Sabah, Malaysian Borneo.
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DOI：
10.1371/journal.pone.0029642
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Hector A
中科院分区：
文献类型：
--
作者：
Saner P;Loh YY;Ong RC;Hector A
热带地区的森林砍伐是碳排放到大气中的一个重要来源。为了为减少毁林和退化所致排放量（REDD+）的努力提供可靠的科学基础，必须对碳储量和通量进行良好的估计。我们目前的C平衡组件选择性地记录低地热带龙脑香雨林在马来西亚婆罗洲的沙巴的Malua森林保护区。该地区的总有机碳为167.9 Mg C ha−1±3.8（SD），包括：（TAGC：55%; 91.9 Mg C ha−1±2.9 SEM）和树木地下碳（TBGC：10%; 16.5 Mg C ha−1±0.5 SEM），朽木（8%; 13.2 Mg C ha−1±3.5 SEM）和土壤有机质（SOM：24%; 39.6 Mg C ha−1±0.9 SEM），林下植被（3%; 5.1 Mg C ha−1±1.7 SEM）、立枯物（<1%; 0.7 Mg C ha−1±0.1 SEM）和细根生物量（<1%; 0.9 Mg C ha−1±0.1 SEM）。通量包括凋落物，代表叶净初级生产力（4.9 Mg C ha−1 yr−1±0.1 SEM），和土壤呼吸，衡量异养生态系统呼吸（28.6 Mg C ha−1 yr−1±1.2 SEM）。缺少必要的估计关闭C平衡的木材净初级生产力和自养呼吸。采伐22年后，TAGC储量比未采伐的森林低28%（128 Mg C ha−1±13.4 SEM）;由于选择性采伐，综合加权平均平均值减少了−57.8 Mg C ha−1（95% CI为−75.5至−40.2）。根据研究结果，我们得出结论，选择性采伐减少了55- 66%的龙脑香股票。造林治疗可能有可能加快恢复的龙脑香C股票的伐木前的水平。
Deforestation in the tropics is an important source of carbon C release to the atmosphere. To provide a sound scientific base for efforts taken to reduce emissions from deforestation and degradation (REDD+) good estimates of C stocks and fluxes are important. We present components of the C balance for selectively logged lowland tropical dipterocarp rainforest in the Malua Forest Reserve of Sabah, Malaysian Borneo. Total organic C in this area was 167.9 Mg C ha−1±3.8 (SD), including: Total aboveground (TAGC: 55%; 91.9 Mg C ha−1±2.9 SEM) and belowground carbon in trees (TBGC: 10%; 16.5 Mg C ha−1±0.5 SEM), deadwood (8%; 13.2 Mg C ha−1±3.5 SEM) and soil organic matter (SOM: 24%; 39.6 Mg C ha−1±0.9 SEM), understory vegetation (3%; 5.1 Mg C ha−1±1.7 SEM), standing litter (<1%; 0.7 Mg C ha−1±0.1 SEM) and fine root biomass (<1%; 0.9 Mg C ha−1±0.1 SEM). Fluxes included litterfall, a proxy for leaf net primary productivity (4.9 Mg C ha−1 yr−1±0.1 SEM), and soil respiration, a measure for heterotrophic ecosystem respiration (28.6 Mg C ha−1 yr−1±1.2 SEM). The missing estimates necessary to close the C balance are wood net primary productivity and autotrophic respiration. Twenty-two years after logging TAGC stocks were 28% lower compared to unlogged forest (128 Mg C ha−1±13.4 SEM); a combined weighted average mean reduction due to selective logging of −57.8 Mg C ha−1 (with 95% CI −75.5 to −40.2). Based on the findings we conclude that selective logging decreased the dipterocarp stock by 55–66%. Silvicultural treatments may have the potential to accelerate the recovery of dipterocarp C stocks to pre-logging levels.
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影响因子：
3.7
作者：
Hautier Y;Saner P;Philipson C;Bagchi R;Ong RC;Hector A
通讯作者：
Hector A
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