Variation in aboveground biomass in forests and woodlands in Tanzania along gradients in environmental conditions and human use
Variation in aboveground biomass in forests and woodlands in Tanzania along gradients in environmental conditions and human use
复制标题
坦桑尼亚森林和林地地上生物量随环境条件和人类利用梯度的变化
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
M. Herold
中科院分区：
文献类型：
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作者：
Daniela Requena Suarez;D. Rozendaal;Veronique de Sy;D. Gibbs;N. Harris;J. Sexton;M. Feng;S. Channan;Eliakimu Zahabu;D. S. Silayo;A. Pekkarinen;C. Martius;M. Herold
受到破坏的非洲热带森林和林地有可能有助于减缓气候变化。因此，有必要了解受干扰和正在恢复的热带森林的碳储存是如何由环境条件和人类使用决定的。在这种情况下，我们探讨如何在环境条件和人类利用梯度确定地上生物量（AGB）在1958年国家森林资源清查（NFI）位于坦桑尼亚大陆的森林和林地地块。地块被分为恢复森林（从森林砍伐中恢复<25年的地区）和建立森林（持续被定义为森林的地区）。这种划分以及对森林建立年份的检测是通过使用森林覆盖概率的密集卫星时间序列来获得的。在降序的重要性，AGB在恢复森林出乎意料地减少与水的可用性，增加与周围的树木覆盖和时间，因为成立，并降低海拔，距离道路，土壤磷含量。AGB在既定的森林意外地减少与水的可用性，增加与周围的树木覆盖，土壤氮含量，并降低海拔。在建立后的头20年里，恢复森林中的AGB增加了0.4兆公顷-1yr-1。我们的研究结果可以作为在非洲恢复热带森林和林地碳汇估计的基础，并在森林景观恢复规划援助。
Disturbed African tropical forests and woodlands have the potential to contribute to climate change mitigation. Therefore, there is a need to understand how carbon stocks of disturbed and recovering tropical forests are determined by environmental conditions and human use. In this case study, we explore how gradients in environmental conditions and human use determine aboveground biomass (AGB) in 1958 national forest inventory (NFI) plots located in forests and woodlands in mainland Tanzania. Plots were divided into recovering forests (areas recovering from deforestation for <25years) and established forests (areas consistently defined as forests for ⩾25 years). This division, as well as the detection of year of forest establishment, was obtained through the use of dense satellite time series of forest cover probability. In decreasing order of importance, AGB in recovering forests unexpectedly decreased with water availability, increased with surrounding tree cover and time since establishment, and decreased with elevation, distance to roads, and soil phosphorus content. AGB in established forests unexpectedly decreased with water availability, increased with surrounding tree cover, and soil nitrogen content, and decreased with elevation. AGB in recovering forests increased by 0.4 Mg ha−1yr−1 during the first 20 years following establishment. Our results can serve as the basis of carbon sink estimates in African recovering tropical forests and woodlands, and aid in forest landscape restoration planning.
影响因子：
6.6
作者：
Nakagawa, Shinichi;Schielzeth, Holger
通讯作者：
Schielzeth, Holger