Woodland networks in a changing climate: Threats from land use change
Woodland networks in a changing climate: Threats from land use change
复制标题
气候变化中的林地网络：土地利用变化的威胁
DOI：
10.1016/j.biocon.2012.01.060
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发表时间：
2012
影响因子：
5.9
通讯作者：
M. Castellazzi
中科院分区：
文献类型：
--
作者：
A. Gimona;L. Poggio;I. Brown;M. Castellazzi
适应气候变化的景观需要促进物种扩散的政策，以抵消碎片化的影响，并允许跟踪物种的“气候生态位”。扩展现有的生态网络通常被认为是维持多功能景观中森林物种的功能连通性的一种措施。然而，在未来几十年，这些网络将受到气候变化对土地使用变化的影响，因为全球驱动因素可能会对国家土地使用政策产生越来越大的影响。因此，需要以土地利用变化为中介，评估气候变化对栖息地网络的间接影响。我们使用了一种综合了气候、土壤属性和景观抗扩散能力的方法，后者使用电路理论估计，在给定两种土地利用变化的情况下，评估了苏格兰森林栖息地网络对土地利用变化的脆弱性。在苏格兰，高粮价和农业用地能力的提高可能导致林地物种的景观连通性下降，特别是在东部和南部，在优质农业用地失去林地的情况下，农业和林地连通性之间可能会有很大的权衡。我们建议，生态网络的规划需要考虑到未来土地利用的变化。应协调多个部门的适应和缓解战略。林地网络将受益于最大限度地减少在未来优质农地上创造新的林地，保护现有的斑块，以及沿着气候梯度，即沿S北部和东部-西部方向建立大范围的扩散路径。
Landscape adaptation to climate change requires policies that facilitate species dispersal, to counteract the effects of fragmentation and allow tracking of a species’ ‘climatic niche’. Expanding existing ecological networks is often proposed as a measure to maintain functional connectivity for forest species in multi-functional landscapes. In the next decades, however, such networks will be threatened by climate change through its effects on land use change, as global drivers are likely to have an increasing influence on national land use policy. Evaluation of indirect effects of climate change, on habitat networks, mediated by land use change, is therefore needed. We used an approach integrating climate, soil properties, and landscape resistance to dispersal, the latter estimated using Circuit Theory, to evaluate the vulnerability to land use change of forest habitat networks in Scotland, given two scenarios of land use change. In Scotland a combination of high food prices and improved land capability for agriculture could lead to decreased landscape connectivity for woodland species, especially in the East and South, with potentially large trade-offs between agriculture and woodland connectivity in the case of loss of woodland on prime agricultural land. We suggest that planning of ecological networks needs to account for future land use change. Adaptation and mitigation strategies across multiple sectors should be reconciled. Woodland networks will benefit from minimising creation of new woodlands on future prime agricultural land, the protection of existing patches, and the creation of wide-scale dispersal pathways along climatic gradients, i.e. in the N–S and E–W directions.
影响因子：
5.7
作者：
Hodgson, Jenny A.;Moilanen, Atte;Thomas, Chris D.
通讯作者：
Thomas, Chris D.