نتایج جستجو برای: land productivity

تعداد نتایج: 198818  

2005
Florence Kondylis

This study uses Rwandan household survey data to evaluate the impact of conflict-induced migration on agricultural productivity, as well as to assess the effect of the Rwandan government’s housing and land redistribution policy. The hypothesis that the policy improved output by a pure resource effect is tested against a human capital spill-over effect hypothesis. Time differentials in the imple...

2014
Myung Soo Cha Yuanyuan Liu Adam Smith

Using grain and farmland price data, this article estimates the interest rate and land rent in five provinces of Qing China to find that they tended to fall in the eighteenth and nineteenth centuries. Given that population growth outstripped both acreage expansion and capital accumulation, the weakening in the rental income for capital and land leads one to predict that Chinese workers also suf...

2013
Neha Jain

Rice, being a major staple crop in South Asia carries its importance in ensuring food security of the region, including in India and Bangladesh. Both the countries have agriculture-based economies where more than 50 percent of the active working population is engaged in agricultural activities. As per UN data, agriculture contributed 17.1 and 18.3 percent, in 2011, in the gross domestic product...

2016
Kunal Sen

Structural transformation—the movement of workers from low-productivity to high-productivity activities— is an essential ingredient of inclusive growth. This paper reviews the evidence on why the pace of structural transformation has differed widely across countries in Asia, with a specific focus on the People’s Republic of China, India, and Thailand. It argues that both government failures rel...

Journal: :Remote Sensing 2013
Eva Ivits Michael Cherlet Stéphanie Horion Rasmus Fensholt

The present study classified global Ecosystem Functional Types (EFTs) derived from seasonal vegetation dynamics of the GIMMS3g NDVI time-series. Rotated Principal Component Analysis (PCA) was run on the derived phenological and productivity variables, which selected the Standing Biomass (approximation of Net Primary Productivity), the Cyclic Fraction (seasonal vegetation productivity), the Perm...

Journal: :The American journal of tropical medicine and hygiene 2006
Stephen Munga Noboru Minakawa Guofa Zhou Emmanuel Mushinzimana Okeyo-Owuor J Barrack Andrew K Githeko Guiyun Yan

We examined the effects of land cover type on survivorship and productivity of Anopheles gambiae in Kakamega in the western Kenyan highlands (elevation = 1,420-1,580 meters above sea level). Under natural conditions, An. gambiae sensu lato adults emerged only from farmland habitats, with an estimated productivity of 1.82 mosquitoes/meter(2)/week, but not from forest and swamp habitats. To deter...

2004
T. Cay F. Iscan

Although increasing population in Turkey agricultural lands have not been expanded, thus, agricultural lands should be used more effectively. Therefore, Land consolidation is the most important work, which has to be done. Land consolidation takes time to execute project because of large application area and extensive. Therefore, using computer is extremely significant to conclude the land conso...

2012
Jevgenijs Steinbuks Thomas W. Hertel

This study analyzes the optimal allocation of the world’s land resources over the course of the next century within a dynamic forwardlooking framework, which brings together distinct strands of economic, agronomic, and biophysical literature and incorporates key drivers affecting global land-use. We show that, while some deforestation is optimal in the near term, the desirability of further def...

2014
P. W. Gerbens-Leenes L. Xu G. J. de Vries A. Y. Hoekstra

Biofuels from microalgae are potentially important sources of liquid renewable energy. Algae are not yet produced on a large scale, but research shows promising results. This study assesses the blue water footprint (WF) and land use of algae-based biofuels. It combines the WF concept with an energy balance approach to determine the blue WF of net energy. The study considers open ponds and close...

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