نتایج جستجو برای: land conservation

تعداد نتایج: 212216  

2017
Samuel N. Chambers Robert F. Baldwin Elizabeth Dennis Baldwin William C. Bridges Nakisha Fouch

More than half of land in the U.S. is privately owned and covers most of known endangered species habitat. An understanding of private landowners' attitudes towards conservation may help to bridge the science-practice gap in regards to conservation initiatives. Aquatic biodiversity is particularly imperiled; in the United States headwaters and isolated wetlands receive little protection through...

2001
Berhanu Gebremedhin Scott M. Swinton

A double hurdle statistical analysis of 250 farms in the Tigray region of Ethiopia reveals different causal factors for soil conservation adoption versus intensity of use. Farmers’ reasons for adopting soil conservation measures vary sharply between stone terraces and soil bunds. Long-term investments in stone terraces were associated with secure land tenure, labour availability, proximity to t...

2009
Rafael Dias Loyola Luiz Gustavo Rodrigues Oliveira-Santos Mário Almeida-Neto Denise Martins Nogueira Umberto Kubota José Alexandre Felizola Diniz-Filho Thomas Michael Lewinsohn

BACKGROUND Prioritization schemes usually highlight species-rich areas, where many species are at imminent risk of extinction. To be ecologically relevant these schemes should also include species biological traits into area-setting methods. Furthermore, in a world of limited funds for conservation, conservation action is constrained by land acquisition costs. Hence, including economic costs in...

2016
D. M. Warfe J. G. Tisdell

Water is a finite resource that must be shared among multiple users and economic and conservation objectives can often be seen as being in conflict. We explored this perception by conducting an integrated bioeconomic analysis of irrigated agriculture and the conservation of freshwater attributes in an agricultural landscape, the Tasmanian Midlands. We constructed a simple bioeconomic model base...

Journal: :Journal of environmental quality 2014
C Santhi J G Arnold M White M Di Luzio N Kannan L Norfleet J Atwood R Kellogg X Wang J R Williams T Gerik

A modeling framework consisting of a farm-scale model, Agricultural Policy Environmental Extender (APEX); a watershed-scale model, Soil and Water Assessment Tool (SWAT); and databases was used in the Conservation Effects Assessment Project to quantify the environmental benefits of conservation practices on cropland. APEX is used to simulate conservation practices on cultivated cropland and Cons...

2016
Tatyana B. Ruseva James R. Farmer Charles Chancellor

As an important component in collaborative natural resource management and nonprofit governance, social capital is expected to be related to variations in the performance of land trusts. Land trusts are charitable organizations that work to conserve private land locally, regionally, or nationally. The purpose of this paper is to identify the level of structural and cognitive social capital amon...

Journal: :international journal of environmental research 2010
l. jing r. zhiyuan

in this paper, we report an investigation of changes in land use and ecosystem services on loess plateau in northern shaanxi province from 1978 to 2004. we used three landsat tm and/or etm data sets to estimate changes in the size of five land-cover/land-use categories, and we also used previously published value coefficients to estimate changes in the value of ecosystem services delivered by e...

2008
KARIN PERHANS

Perhans, K. 2008. Cost-efficient conservation strategies for boreal forest biodiversity. Doctor’s dissertation. ISSN 1652-6880, ISBN 978-91-85913-72-5 Long and intensive forest management has made conservation measures in the forest landscape necessary to maintain forest biodiversity. The most common measure is to set aside land for conservation purposes. This, however, requires large financial...

Journal: :Journal of Zhejiang University. Science 2004
Min-Jun Shi Kevin Chen

Land degradation is one of the severe environmental problems in China. In order to combat land degradation, a soil conservation program was introduced since 2000 to reduce soil erosion by converting slope-cultivated land into forestry and pasture. This paper represents the first systematic attempt to investigate the impact of the soil conservation program on land degradation in the loess platea...

2011
Yanli Zhang Ramanathan Sugumaran Matthew McBroom John DeGroote Rebecca L. Kauten Paul K. Barten

In order to maintain a proper balance between development pressure and water resources protection, and also to improve public participation, efficient tools and techniques for soil and water conservation projects are needed. This paper describes the development and application of a web-based watershed management spatial decision support system, WebWMPI. The WebWMPI uses the Watershed Management...

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