Potential effects of future land-use change on regional carbon stocks in the UK
Potential effects of future land-use change on regional carbon stocks in the UK
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DOI：
10.1016/j.envsci.2010.10.001
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发表时间：
2011-01-01
影响因子：
6
通讯作者：
Hill, Ross A.
中科院分区：
文献类型：
--
作者：
Cantarello, Elena;Newton, Adrian C.;Hill, Ross A.
为了探讨土地利用变化对英格兰西南部碳（C）储量的影响，根据英国目前的国家和地区规模的政策和计划，探讨了三种情景。所评估的情景是：（一）重建生物多样性，包括恢复824，244公顷战略性自然区的生境;（二）森林战略，包括建立16，000公顷新的林地;（三）生物量战略，包括将65，513公顷可耕地转变为生物能源作物。假设这些目标中的每一个都将在2020年之前实现，碳积累时间分别为100年、100年和30年。碳储量变化的估计是通过汇编11种土地利用类型的植被和土壤有机碳密度数据，从系统的文献综述。结果表明，FS将导致最高的年度潜在固碳（高达3.63 Mg C ha（-1）yr（-1））。然而，经常预算下的总碳储量将是最高的（增加高达20%），因为与森林资源相比，更多的牧场和耕地被转化为阔叶林。BS对碳的影响最小（碳储量增加最多0.3%，螯合量最多0.41 Mg C ha（-1）yr（-1））。这里采用的空间明确的分析方法提供了一个指标，说明哪些土地利用变化将对西南地区的碳固存贡献最大，并可能有助于实现2012年后的国家减排目标。(C)2010爱思唯尔有限公司版权所有。
In order to explore the impact of land-use change on carbon (C) stocks in South West England, three scenarios were explored based on current UK national- and regional-scale policies and plans. The scenarios assessed were: (i) Rebuilding Biodiversity (RB), involving habitat restoration of 824,244 ha of strategic nature areas; (ii) Forest Strategy (FS), involving establishment of 16,000 ha of new woodlands; and (iii) Biomass Strategy (BS), involving conversion of 65,513 ha of arable land into bioenergy crops. It was assumed that each of these targets would be implemented by the year 2020, with carbon build-up times of 100, 100 and 30 years, respectively. Estimates of C-stock changes were produced by compiling vegetation and soil organic C-density data for 11 land-use types from a systematic literature review. Results indicated that FS would lead to the highest yearly potential carbon sequestration (up to 3.63 Mg C ha(-1) yr(-1)). However, the total C-stocks would be the highest under RB (up to 20% increase), owing to the greater area of pastures and arable land being converted into broadleaved forest when compared to FS. BS would have the least effect on C (C-stock increase of up to 0.3% and up to 0.41 Mg C ha(-1) yr(-1) sequestered). The spatially explicit analytical approach adopted here provides an indication of which land-use changes would contribute most to C-sequestration within the South West region, and could contribute to achieving national emission reduction targets post-2012. (C) 2010 Elsevier Ltd. All rights reserved.