نتایج جستجو برای: agricultural total factorproductivity
تعداد نتایج: 890560 فیلتر نتایج به سال:
A mechanistic model of N2O emission from agricultural soil (DeNitrification-DeCompositionFDNDC) was modified for application to the UK, and was used as the basis of an inventory of N2O emission from UK agriculture in 1990. UK-specific input data were added to DNDC’s database and the ability to simulate daily C and N inputs from grazing animals and applied animal waste was added to the model. Th...
We assess long-run patterns of global agricultural productivity growth between 1970 and 2005 and examine the relationship between investments in technology capital and productivity. To measure agricultural total factor productivity (TFP) we employ a Solow-type growth accounting method to decompose output growth into input and TFP growth. For technology capital we construct two indexes reflectin...
The purpose of this paper is to analyze the productivity change for agricultural cooperatives in Japan measured by nonparametric output-oriented Malmquist indices of total factor productivity (TFP)┻ The productivity change is decomposed into technical change and technical efficiency change┻ Linear programming techniques are used to calculate the productivity change using a panel data set for 44...
With increasing tension between humans and land, arising pressure on food security in China, the improvement of total factor productivity is important to realize agricultural modernization promote rural revitalization strategy. In this study, we applied DEA-Malmquist index method measure growth China’s its decomposition indexes at prefecture-level city scale from 2011 2020. We found average ann...
This paper studied the total factor productivity (TFP) of agriculture in Bohai Rim region. The agricultural TFP showed dependence development on chemical fertilizers, pesticides, labor, science, technology, etc. By coordinating inputs various production factors, efficiency can be improved, reducing over-reliance fertilizers and pesticides achieving sustainability agriculture. In this study, sec...
سازند پابده در برش دره شهر شامل 260متر شیل، شیل آهکی، مارن و آهک می باشد. مطالعات انجام شده بر روی فرامینیفرهای پلانکتون منجر به شناسایی و ارائه تعداد 12 بیوزون شده است. این بیوزون ها عبارتند از: بیوزون شماره یک: parasubbotina pseudobulloides partial-range zone ، بیوزون شماره دو: subbotina triloculinoides partial-range zone، بیوزون شماره سه: morozovella angulata partial-range zone ، بیوزون شمار...
Riparian buffers can influence water quality in downstream lakes or rivers by buffering non-point source pollution in upstream agricultural fields. With increasing nitrogen (N) pollution in small agricultural watersheds, a major function of riparian buffers is to retain N in the soil. A series of field experiments were conducted to monitor pollutant transport in riparian buffers of small waters...
The agricultural organic farming is different from conventional farming in a way that is aimed at providing a balanced and constructive action in agricultural systems. With the increase in intensive agriculture, undesirable changes were being observed in ecosystems with irreparable damage being caused to the natural equilibrium. This is the reason for the increasing interest in organic farming ...
According to the Ahlowalia hypothesis (1995), the growth of total factor productivity (TFP) beside infrastructure investments of government lead to income inequality decrease in rural areas of countries. The main objective of this study is to investigate the effects of public investments such as agricultural R&E, road, education and irrigation on income inequality in rural areas of Iran. In ord...
Conventional wisdom postulates that leaching losses of N from agriculture systems are dominated by NO(3)(-). Although the export of dissolved organic nitrogen (DON) into the groundwater has been recognized for more than 100 yr, it is often ignored when total N budgets are constructed. Leaching of DON into stream and drinking water reservoirs leads to eutrophication and acidification, and can po...
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