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Ecosystem carbon sequestration through restoration of degraded lands in North East India
Land Degradation & Development ( IF 4.7 ) Pub Date : 2017-10-20 , DOI: 10.1002/ldr.2816
Biplab Brahma 1 , Karabi Pathak 1 , Rattan Lal 2 , Bandana Kurmi 1 , Milon Das 1 , Panna Chandra Nath 1 , Arun Jyoti Nath 1 , Ashesh Kumar Das 1
Affiliation  

This study evaluated the ecosystem carbon (C) stock and sequestration potential for predominant land uses converted from forest in North East India (NEI) to advance the scientific knowledge and minimize the anthropogenic C emissions from land use change (LUC). Field assessments were conducted on six predominant land uses including: (i) natural forest (NF), (ii) degraded forest (DF), (iii) rubber (Hevea brasiliensis) plantation (RP), (iv) Areca (Areca catechu) plantation (ArP), (v) pan (Piper betle) jhum (slash and mulching) agroforestry (PB), and (vi) Imperata grassland (IG) of NEI to assess changes in ecosystem C stock with progressive and retrogressive LUC. Ecosystem C stock was the highest for NF (300. 5 Mg ha-1) and the lowest under IG (110.4 Mg ha-1). The ecosystem C stock under PB and IG was 11 and 63%, respectively, lower than that under NF. In comparison with DF, the gain in ecosystem C was in the order: PB (125%)>RP (99%)>ArP (4%). The ratio of SOC: ecosystem C stock was ~50% for NF, PB and RP and that shifted to ~80% for ArP/DF/IG. The LUC and management of DF through PB and RP indicated the ecosystem C sequestration rate of 5 and 4 Mg ha-1 yr-1, respectively. Similarly, the ecosystem C sequestration rate was 0.5 and 4 Mg ha-1 yr-1, respectively, when IG was converted into ArP and RP. Therefore, restoration of degraded lands (viz. DF, IG) through RP and PB enhanced ecosystem C sequestration rate and reduced CO2 emissions from LUC.

中文翻译:

通过恢复印度东北部退化土地的生态系统碳固存

本研究评估了印度东北部 (NEI) 从森林转化而来的主要土地用途的生态系统碳 (C) 储量和封存潜力,以推进科学知识并最大限度地减少土地利用变化 (LUC) 造成的人为碳排放。对六种主要土地用途进行了实地评估,包括:(i) 天然林 (NF),(ii) 退化林 (DF),(iii) 橡胶 (Hevea brasiliensis) 种植园 (RP),(iv) 槟榔 (Areca catechu) NEI 的人工林 (ArP)、(v) pan (Piper betle) jhum (slash and mulching) 农林业 (PB) 和 (vi) Imperata 草原 (IG) 以评估生态系统 C 库的变化,并具有渐进和倒退的 LUC。生态系统 C 存量对于 NF (300. 5 Mg ha-1) 最高,在 IG (110.4 Mg ha-1) 下最低。PB 和 IG 下的生态系统 C 存量分别比 NF 下低 11% 和 63%。与DF相比,生态系统C的增益顺序为:PB(125%)>RP(99%)>ArP(4%)。对于 NF、PB 和 RP,SOC:生态系统 C 储量的比率为 ~50%,而对于 ArP/DF/IG,该比率变为 ~80%。通过 PB 和 RP 对 DF 的 LUC 和管理表明,生态系统 C 封存率分别为 5 和 4 Mg ha-1 yr-1。同样,当 IG 转化为 ArP 和 RP 时,生态系统 C 封存率分别为 0.5 和 4 Mg ha-1 yr-1。因此,通过 RP 和 PB 恢复退化土地(即 DF、IG)可提高生态系统碳固存率并减少 LUC 的 CO2 排放。通过 PB 和 RP 对 DF 的 LUC 和管理表明,生态系统 C 封存率分别为 5 和 4 Mg ha-1 yr-1。同样,当 IG 转化为 ArP 和 RP 时,生态系统 C 封存率分别为 0.5 和 4 Mg ha-1 yr-1。因此,通过 RP 和 PB 恢复退化土地(即 DF、IG)可提高生态系统碳固存率并减少 LUC 的 CO2 排放。通过 PB 和 RP 对 DF 的 LUC 和管理表明,生态系统 C 封存率分别为 5 和 4 Mg ha-1 yr-1。同样,当 IG 转化为 ArP 和 RP 时,生态系统 C 封存率分别为 0.5 和 4 Mg ha-1 yr-1。因此,通过 RP 和 PB 恢复退化土地(即 DF、IG)可提高生态系统碳固存率并减少 LUC 的 CO2 排放。
更新日期:2017-10-20
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