نتایج جستجو برای: agricultural services

تعداد نتایج: 397557  

2017
Luis R Carrasco Edward L Webb William S Symes Lian P Koh Navjot S Sodhi

Global demands for agricultural and forestry products provide economic incentives for deforestation across the tropics. Much of this deforestation occurs with a lack of information on the spatial distribution of benefits and costs of deforestation. To inform global sustainable land-use policies, we combine geographic information systems (GIS) with a meta-analysis of ecosystem services (ES) stud...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1394

with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...

Agricultural Extension services are among the most important rural services in developing countries. The services are considered to be a key driver of technological change and productivity growth in agriculture. In Kenya, like in the rest of the developing economies, agricultural extension has largely been delivered through supply–driven approaches. Due to perceived low impact of agricultural e...

2010
Huoguo Zheng Haiyan Hu Shihong Liu Hong Meng

The broadcast population coverage has increased to 96% in china. Information services by radio have wide coverage, low cost, easy to grass-roots farmers to accept etc. characteristics. In order to play the better role of broadcast information service in rural area, the author R & D agricultural information service system based on addressable broadcast, which transformed from traditional broadca...

2015
Sieglinde S. Snapp Richard G. Smith Philip Robertson

Almost all intensive row-crop ecosystems depend on external chemical inputs such as nitrogen fertilizers and pesticides for their high yields. This dependency has had important consequences for the environment and for ecosystem services (MEA 2005; Swinton et al. 2015a, Chapter 3 in this volume) that underpin these systems’ long-term sustainability (Robertson and Swinton 2005). Well-known conseq...

2004
Deborah Barreau Chang Su Kristina M. Spurgin

National agricultural statistical information is a product of cooperative agreements and collaboration across agencies at the state and federal levels. This allows for sharing of responsibilities for data gathering, aggregating and disseminating information, and providing services. The agencies involved in cooperative arrangements to accomplish these tasks include: US Department of Agriculture ...

2017
Yuan Zhang Julie E. Wilson Les M. Lavkulich

There is concern regarding the loss of ecosystem goods and services as a result of land use changes such as the expansion and intensification of agricultural activities. Assessments of these interactions require innovative analyses that combine qualitative and quantitative economic analyses. The Millennium Ecosystem Assessment framework was applied to a peri-urban region in British Columbia, Ca...

2017
Roger Attwater Chris Derry

Pressures on urban, peri-urban and rural water and agricultural systems are increasingly complex with multiple interacting stresses and impacts. As a way of addressing these issues there has been increasing consideration as to how to build and manage resilience in these complex social-ecological systems. This paper presents a case study of the role of water recycling for agricultural use within...

2007
Peter Girard Robert D. Mohr

This study uses quantitative and qualitative survey data on the use of public-private partnership in provision and production of public services by municipalities in predominantly rural New Hampshire (USA). Descriptive analysis suggests that town officials are less satisfied with the quality of privatized services, suggesting that privatization involves some tradeoff between costs and quality. ...

2014
Tola Gemechu Ango Kristoffer Hylander

Farmers’ practices in the management of agricultural landscapes influence biodiversity with implications for livelihoods, ecosystem service provision, and biodiversity conservation. In this study, we examined how smallholding farmers in an agricultureforest mosaic landscape in southwestern Ethiopia manage trees and forests with regard to a few selected ecosystem services and disservices that th...

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