Conserving the birds of Uganda's banana-coffee arc: land sparing and land sharing compared.
Conserving the birds of Uganda's banana-coffee arc: land sparing and land sharing compared.
复制标题
DOI：
10.1371/journal.pone.0054597
复制
发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Atkinson PW
中科院分区：
文献类型：
--
作者：
Hulme MF;Vickery JA;Green RE;Phalan B;Chamberlain DE;Pomeroy DE;Nalwanga D;Mushabe D;Katebaka R;Bolwig S;Atkinson PW
协调养活日益增长的人口和保护生物多样性的目标是一项艰巨的挑战。在这里，我们通过评估土地节约（高产农业，可能有助于保护非农田栖息地）、土地共享（农田内低产农业和更多生物多样性）或混合策略是否会在特定的农业生产水平上带来更好的鸟类保护成果来探索潜在的解决方案。我们调查了乌干达南部的森林和农田研究区域，测量了 256 种鸟类的种群密度和农业产量：粮食能源和总收入。拟合了与密度和产量相关的参数非线性函数。对于一系列农业总生产目标，物种被确定为“赢家”（有农业的总人口规模总是至少与没有农业的人口总数一样大）或“输家”（有农业的总人口有时或总是减少）。对于每个目标，我们确定每个物种是否会在土地节约、土地共享或中等产量的情况下预测拥有更高的总种群数量。我们发现，大多数物种在节省土地的情况下预计将拥有最高的总种群数量，特别是失败物种和全球分布范围较小的物种。因此，如果将高产农业作为减少森林损失战略的一部分，那么与低产农业和土地共享相比，更多的物种将从高产农业中受益，正如加纳和印度之前的一项研究发现的那样。我们警告不要仅仅将倡导高产农业作为节约土地的手段，如果这种做法没有对自然栖息地、其他生态系统服务和社会福利进行强有力的保护。相反，我们建议自然资源保护主义者探索如何更好地整合保护政策和农业政策，以实现土地节约，例如，将土地利用规划和对小农的农艺支持结合起来。
Reconciling the aims of feeding an ever more demanding human population and conserving biodiversity is a difficult challenge. Here, we explore potential solutions by assessing whether land sparing (farming for high yield, potentially enabling the protection of non-farmland habitat), land sharing (lower yielding farming with more biodiversity within farmland) or a mixed strategy would result in better bird conservation outcomes for a specified level of agricultural production. We surveyed forest and farmland study areas in southern Uganda, measuring the population density of 256 bird species and agricultural yield: food energy and gross income. Parametric non-linear functions relating density to yield were fitted. Species were identified as “winners” (total population size always at least as great with agriculture present as without it) or “losers” (total population sometimes or always reduced with agriculture present) for a range of targets for total agricultural production. For each target we determined whether each species would be predicted to have a higher total population with land sparing, land sharing or with any intermediate level of sparing at an intermediate yield. We found that most species were expected to have their highest total populations with land sparing, particularly loser species and species with small global range sizes. Hence, more species would benefit from high-yield farming if used as part of a strategy to reduce forest loss than from low-yield farming and land sharing, as has been found in Ghana and India in a previous study. We caution against advocacy for high-yield farming alone as a means to deliver land sparing if it is done without strong protection for natural habitats, other ecosystem services and social welfare. Instead, we suggest that conservationists explore how conservation and agricultural policies can be better integrated to deliver land sparing by, for example, combining land-use planning and agronomic support for small farmers.
登录
查看更多内容
DOI：
10.1098/rspb.2012.0515
发表时间：
2012-07-22
影响因子：
4.7
作者：
Balmford, Andrew;Green, Rhys;Phalan, Ben
通讯作者：
Phalan, Ben
影响因子：
4.9
作者：
Brink, Andreas Bernhard;Eva, Hugh Douglas
通讯作者：
Eva, Hugh Douglas
DOI：
10.1073/pnas.0905455107
发表时间：
2010-03-30
影响因子：
11.1
作者：
Perfecto, Ivette;Vandermeer, John
通讯作者：
Vandermeer, John
影响因子：
1
作者：
BARNES, RFW
通讯作者：
BARNES, RFW
影响因子：
2.1
作者：
Davey, Catherine M.;Vickery, Juliet A.;Siriwardena, Gavin M.
通讯作者：
Siriwardena, Gavin M.