نتایج جستجو برای: land conservation

تعداد نتایج: 212216  

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2008
Jeffrey C Milder James P Lassoie Barbara L Bedford

Suburban, exurban, and rural development in the United States consumes nearly 1 million hectares of land per year and is a leading threat to biodiversity. In response to this threat, conservation development has been advanced as a way to combine land development and land conservation while providing functional protection for natural resources. Yet, although conservation development techniques h...

Journal: :اقتصاد و توسعه کشاورزی 0
صمد عرفانی فر منصور زیبایی مهدی کسرایی

to investigate factors affecting the adoption of conservation tillage systems, the tillage methods utilized by wheat producers in the central darab county are categorized into conventional, reduced-tillage and no tillage systems. for this purpose, multinomial logit model approach using the stata software was applied to the data set collected by random cluster sampling method. the explanatory va...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2010
Andrew T Knight Richard M Cowling Mark Difford Bruce M Campbell

Abstract  Spatial prioritization techniques are applied in conservation-planning initiatives to allocate conservation resources. Although typically they are based on ecological data (e.g., species, habitats, ecological processes), increasingly they also include nonecological data, mostly on the vulnerability of valued features and economic costs of implementation. Nevertheless, the effectivenes...

Journal: :Ecological applications : a publication of the Ecological Society of America 2015
Sebastián Martinuzzi John C Withey Anna M Pidgeon Andrew J Plantinga Alexa J McKerrow Steven G Williams David P Helmers Volker C Radeloff

Land-use change is a major cause of wildlife habitat loss. Understanding how changes in land-use policies and economic factors can impact future trends in land use and wildlife habitat loss is therefore critical for conservation efforts. Our goal here was to evaluate the consequences of future land-use changes under different conservation policies and crop market conditions on habitat loss for ...

2011

Urban growth compromises open space and ecosystem functions. To mitigate the negative effects, some agencies use reserve selection models to identify conservation sites for purchase or retention. Existing models assume that conservation has no impact on nearby land prices. We propose a new integer program that relaxes this assumption via adaptive cost-coefficients. Our model accounts for the tw...

2011
Kerstin Jantke Uwe A. Schneider

Nature reserves are often designated ad hoc. Despite increasing conservation efforts, loss of biodiversity is still accelerating. Considering land scarcity and demand for alternative uses, efficiency in conservation strongly correlates with efficiency in land allocation. Systematic conservation planning can effectively prioritize conservation activities. Previous studies minimize opportunity co...

Journal: :Journal of environmental management 2013
Van Butsic David J Lewis Volker C Radeloff

How to best site reserves is a leading question for conservation biologists. Recently, reserve selection has emphasized efficient conservation: maximizing conservation goals given the reality of limited conservation budgets, and this work indicates that land market can potentially undermine the conservation benefits of reserves by increasing property values and development probabilities near re...

Journal: :Proceedings. Biological sciences 2008
Tien Ming Lee Walter Jetz

Global biodiversity is under significant threat from the combined effects of human-induced climate and land-use change. Covering 12% of the Earth's terrestrial surface, protected areas are crucial for conserving biodiversity and supporting ecological processes beneficial to human well-being, but their selection and design are usually uninformed about future global change. Here, we quantify the ...

Journal: :Ecological applications : a publication of the Ecological Society of America 2010
K A Wilson E Meijaard S Drummond H S Grantham L Boitani G Catullo L Christie R Dennis I Dutton A Falcucci L Maiorano H P Possingham C Rondinini W R Turner O Venter M Watts

Alternative land uses make different contributions to the conservation of biodiversity and have different implementation and management costs. Conservation planning analyses to date have generally assumed that land is either protected or unprotected, and that the unprotected portion does not contribute to conservation goals. We develop and apply a new planning approach that explicitly accounts ...

2010
Zachary Bray

Local and regional private land trusts are among the most important and most numerous conservation actors in contemporary America, and conservation easements are perhaps the key land conservation tools used by these trusts. In recent decades, privately held conservation easements and local and regional private land trusts have grown at a rapid and increasing rate, and the total acreage protecte...

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