نتایج جستجو برای: has productive lands

تعداد نتایج: 2650702  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید مدنی آذربایجان - دانشکده زبانهای خارجی 1391

since esp received universal attention to smooth the path for academic studies and productions, a great deal of research and studies have been directed towards this area. swales’ (1990) model of ra introduction move analysis has served a pioneering role of guiding many relevant studies and has proven to be productive in terms of helpful guidelines that are the outcome of voluminous productions ...

2017
Lin Lin Ziran Ye Muye Gan Amir Reza Shahtahmassebi Melanie Weston Jinsong Deng Shenggao Lu

Cultivated land in China has faced severe challenges in recent years due to rapid urbanization. In 1997, the “cultivated land requisition-compensation balance” policy was implemented by the government to maintain the quantity and quality of cultivated land. Previous studies mainly focused on the quantity changes of cultivated land. In this study, from a quality perspective, we characterized the...

2014
Emmanuel Acheampong Kwame Nkrumah

The widespread acquisition of land for large-scale/commercial production of biofuel crops in Ghana has raised concerns from civil society organizations, local communities and other parties, regarding the impact of these investments on local livelihoods. This paper assessed the effect of large-scale acquisition of land for production of Jatropha curcas on farmers’ livelihoods in Ghana. The study...

2012
Gustavo Gabriel Striker

Flooding is a natural disturbance affecting crop and forage production worldwide due to the detrimental effects that it provokes on most terrestrial plants (Bailey-Serres & Voesenek, 2008; Colmer & Vosenek, 2009). Over the last years, the Intergovernmental Panel on Climate Change (http://www.ippc.ch) has informed that man-induced world climate change will increase the frequency of precipitation...

Abstract Land salinization is a major obstacle to the sustainable development of agriculture in arid regions. The demand for food, fiber, fuel and fresh water has increased in the recent decades, particularly in developing nations, due to alarming rise in population. As fresh water resources and productive lands for crop production are limited, new strategies for the sustainable utilization of ...

2013
Hans Harmen Smit Erik Meijaard Carina van der Laan Stephan Mantel Arif Budiman Pita Verweij

Land degradation is a global concern. In tropical areas it primarily concerns the conversion of forest into non-forest lands and the associated losses of environmental services. Defining such degradation is not straightforward hampering effective reduction in degradation and use of already degraded lands for more productive purposes. To facilitate the processes of avoided degradation and land r...

Journal: :Environmental management 2009
Frank Merry Britaldo Soares-Filho Daniel Nepstad Gregory Amacher Hermann Rodrigues

Logging has been a much maligned feature of frontier development in the Amazon. Most discussions ignore the fact that logging can be part of a renewable, environmentally benign, and broadly equitable economic activity in these remote places. We estimate there to be some 4.5 +/- 1.35 billion m(3) of commercial timber volume in the Brazilian Amazon today, of which 1.2 billion m(3) is currently pr...

2014
Beatríz Pías Gema Escribano-Avila Emilio Virgós Adrián Escudero Fernando Valladares

Colonization of abandoned lands by woody vegetation may be a great opportunity for ecosystem recovery given the current and future trend of land abandonment. This may help to reverse the generalized condition of ecosystem degradation of developed countries which is an urgent need. However, ecosystem recovery in abandoned lands can be seriously limited by biotic and abiotic factors. Indentify su...

Journal: :Ekonomika Poljoprivrede (1979) 2021

Among the countries of world, Russia is one richest in agricultural land. However, a quantitative advantage poorly transformed into qualitative one. As result, there has been gradual decrease productive land, decline crop yields, use highly lands as less valuable land categories, and degradation. These negative processes cause severe damage to both sector country's economy whole. One reasons fo...

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