Pejchar Liba, Morgan Peter M, Caldwell Margaret R, Palmer Carl, Daily Gretchen C
Biological Sciences, 371 Serra Mall, Stanford University, Stanford, CA 94305, USA.
Conserv Biol. 2007 Feb;21(1):69-78. doi: 10.1111/j.1523-1739.2006.00572.x.
The widespread conversion of rural land to low-density residential development poses an immediate threat to biodiversity and to the provision of ecosystem services. Given that development will continue and environmental stakes are high, analyzing alternative growth strategies is critical. Conservation development is one such strategy that has the potential to benefit ecosystems and diverse stakeholders including developers, homebuyers, governments, and society as a whole. Conservation development clusters homes on one part of a property to manage the most ecologically important land for the conservation of biodiversity and ecosystem services. We draw on lessons learned from landscape ecology, open-space development, and regional planning to weigh the biophysical, economic, and institutional evidence for and against conservation development. Conservation development offers many potential environmental and economic advantages: relatively high home values and appreciation rates, lower development costs, and social and ecological benefits to society including landscape connectivity, protection and active stewardship of important ecological assets, and the maintenance of ecosystem services. But this approach also has shortcomings: it may require enlightened institutional regulations and regional planning (and/or ecologically aware developers), it is not always more profitable than conventional development and thus may require subsidies or incentives, and additional research is required to fully understand its benefits and drawbacks. With more information on the effects of clustering, the development of flexible zoning laws, and effective regional planning, conservation development could be a viable strategy for sustaining biodiversity and ecosystem services in changing landscapes.
农村土地广泛转变为低密度住宅开发对生物多样性和生态系统服务的提供构成了直接威胁。鉴于开发将持续且环境风险很高,分析替代增长战略至关重要。保护性开发就是这样一种战略,它有可能使生态系统以及包括开发商、购房者、政府和整个社会在内的不同利益相关者受益。保护性开发将房屋聚集在一处房产的一部分区域,以便管理对生物多样性和生态系统服务保护最为重要的土地。我们借鉴景观生态学、开放空间开发和区域规划的经验教训,权衡支持和反对保护性开发的生物物理、经济和制度方面的证据。保护性开发具有许多潜在的环境和经济优势:相对较高的房屋价值和增值率、较低的开发成本,以及对社会的社会和生态效益,包括景观连通性、对重要生态资产的保护和积极管理,以及生态系统服务的维持。但这种方法也有缺点:它可能需要开明的制度法规和区域规划(以及/或者有生态意识的开发商),它并不总是比传统开发更有利可图,因此可能需要补贴或激励措施,并且需要更多研究来全面了解其利弊。有了更多关于聚集效应的信息、灵活分区法的制定以及有效的区域规划,保护性开发可能成为在不断变化的景观中维持生物多样性和生态系统服务的可行战略。