نتایج جستجو برای: agricultural services

تعداد نتایج: 397557  

2017
Lovisa Nilsson Georg K. S. Andersson Klaus Birkhofer Henrik G. Smith

Over and above food, agricultural landscapes provide citizens with crucial public-good ecosystem services, such as biodiversity conservation, cultural values, recreational opportunities, and food security. Because continuing agricultural intensification undermines the ability of landscapes to provide public goods, policies have been implemented to preserve landscape multifunctionality, but with...

2017
Danny J. Eastburn Anthony T. O’Geen Kenneth W. Tate Leslie M. Roche

Policy makers and practitioners are in need of useful tools and models for assessing ecosystem service outcomes and the potential risks and opportunities of ecosystem management options. We utilize a state-and-transition model framework integrating dynamic soil and vegetation properties to examine multiple ecosystem services-specifically agricultural production, biodiversity and habitat, and so...

Journal: :Remote Sensing 2011
Damian Bargiel Sylvia Herrmann

Functioning ecosystems offer multiple services for human well-being (e.g., food, freshwater, fiber). Agriculture provides several of these services but also can cause negative impacts. Thus, it is essential to derive up-to-date information about agricultural land use and its change. This paper describes the multi-temporal classification of agricultural land use based on high resolution spotligh...

2016
Khondoker Abdul Mottaleb Timothy J. Krupnik Olaf Erenstein

There is strong advocacy for agricultural machinery appropriate for smallholder farmers in South Asia. Such 'scale-appropriate' machinery can increase returns to land and labour, although the still substantial capital investment required can preclude smallholder ownership. Increasing machinery demand has resulted in relatively well-developed markets for rental services for tillage, irrigation, ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Douglas A Landis Mary M Gardiner Wopke van der Werf Scott M Swinton

Increased demand for corn grain as an ethanol feedstock is altering U.S. agricultural landscapes and the ecosystem services they provide. From 2006 to 2007, corn acreage increased 19% nationally, resulting in reduced crop diversity in many areas. Biological control of insects is an ecosystem service that is strongly influenced by local landscape structure. Here, we estimate the value of natural...

Journal: :International journal of environmental research and public health 2015
Keyu Qin Jing Li Xiaonan Yang

Natural ecosystems provide society with important goods and services. With rapidly increasing populations and excessive utilization of natural resources, humans have been enhancing the production of some services at the expense of others. Although the need for certain trade-offs between conservation and development is urgent, having only a small number of efficient methods to assess such trade-...

Journal: :Trends in ecology & evolution 2013
Riccardo Bommarco David Kleijn Simon G Potts

Rising demands for agricultural products will increase pressure to further intensify crop production, while negative environmental impacts have to be minimized. Ecological intensification entails the environmentally friendly replacement of anthropogenic inputs and/or enhancement of crop productivity, by including regulating and supporting ecosystem services management in agricultural practices....

2011
Theodore A. Evans Tracy Z. Dawes Philip R. Ward Nathan Lo

Agricultural intensification has increased crop yields, but at high economic and environmental cost. Harnessing ecosystem services of naturally occurring organisms is a cheaper but under-appreciated approach, because the functional roles of organisms are not linked to crop yields, especially outside the northern temperate zone. Ecosystem services in soil come from earthworms in these cooler and...

2008
John M. Antle

* Paper for the Workshop and Policy Round Table on: California Agroecosystem Services: Assessment, Valuation and Policy Perspectives, University of California at Davis,September, 2007, sponsored by University of California Agricultural Issues Center and California Institute for the Study of Specialty Crops ,California Polytechnic State University, San Luis Obispo. ** Antle is a Professor in the...

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