نتایج جستجو برای: so decrease biodiversity increase agricultural value added

تعداد نتایج: 2313345  

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2008
Sara J Scherr Jeffrey A McNeely

The dominant late twentieth century model of land use segregated agricultural production from areas managed for biodiversity conservation. This module is no longer adequate in much of the world. The Millennium Ecosystem Assessment confirmed that agriculture has dramatically increased its ecological footprint. Rural communities depend on key components of biodiversity and ecosystem services that...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1389

abstract: since sugar consumption is directly related to diabetes and other illnesses such as obesity, the issue that will most heavily dominate the health food market is blood sugar management and low glycemic foods. using calcium chloride and gums such as sodium alginate and low ester pectin as thikener and a high-potency sweetener aspartame we were able to reduce sugar content of sour cherry...

2013
David A Norton Nick Reid Laura Young Rachel Standish Bruce Clarkson

The ability to address land degradation and biodiversity loss while maintaining the production of plant and animal products is a key global challenge. Biodiversity decline as a result of vegetation clearance, cultivation, grazing, pesticide and herbicide application, and plantation establishment, amongst other factors, has been widely documented in agricultural ecosystems. In this paper we iden...

2006
J R Treweek Claire Brown Philip Bubb

Agricultural expansion is a major driver for loss of biodiversity; changes in land use or intensity associated with trade liberalisation can therefore have major consequences. Assessments of the impacts of agricultural trade have tended to neglect biodiversity, despite its crucial role in maintaining productive agro-ecosystems. Advice on assessment of biodiversity impacts is required to support...

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 . ...

2018
David Mall Ashley E Larsen Emily A Martin

Transforming modern agriculture towards both higher yields and greater sustainability is critical for preserving biodiversity in an increasingly populous and variable world. However, the intensity of agricultural practices varies strongly between crop systems. Given limited research capacity, it is crucial to focus efforts to increase sustainability in the crop systems that need it most. In thi...

2015
John W. McArthur Gordon C. McCord

This paper uses cross-country panel data to estimate the agronomic inputs that lead to cereal yield improvements and the consequences for countries' processes of structural change. The results suggest a clear role for fertilizer, modern seeds and water in boosting yields. It then estimates empirical links in developing economies between increased agricultural yields and economic growth; in part...

2004
Connie Hall Eric Bremer

s. Bloodworth, H., and T. Sobecki. 2002. Land use biodiversity index as a soil quality indicator. In Making conservation tillage conventional: Building a future on 25 years of research; Proceedings of 25 Annual Southern Conservation Tillage Conference for Sustainable Agriculture, Auburn, AL, USA, 24-26 June, 2002, Pp.219-221. E. van Santen, editor. Auburn, AL: Alabama Agricultural Experiment St...

2014
M. D. McDaniel A. S. Grandy L. K. Tiemann M. N. Weintraub

While many ecosystem processes depend on biodiversity, the relationships between agricultural plant diversity and soil carbon (C) and nitrogen (N) dynamics remains controversial. Our objective was to examine how temporal plant diversity (i.e. crop rotation) influences residue decomposition, a key ecosystem function that regulates nutrient cycling, greenhouse gas emissions, and soil organic matt...

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