نتایج جستجو برای: productive agricultural lands

تعداد نتایج: 141141  

Journal: : 2023

XVI. yüzyılda Vilayet-i Rum’da bulunan Uluyörük cemaatlerinin temel geçim kaynakları hayvancılıktı. Bu sebeple ziraî faaliyetler ikinci plandaydı. mensubu yalnızca birkaç cemaat geçinmek maksadıyla hayvancılıkla birlikte faaliyette bulunuyordu. Diğer cemaatler ise kendi ihtiyaçlarına yönelik ve basit tarzda tarımla meşgul oluyorlardı. Yapılan tarzdaki faaliyetlerin esası hububata dayanıyordu. y...

Journal: :international journal of advanced biological and biomedical research 0
mojtaba ziaeemehr master of science in agricultural management, dezfoul, iran fatemeh panahi assistance professors, islamic azad university, dezfoul branch , agriculture collage, dezfoul, iran

objective: the agricultural sector is one of the most important and the most basic of productive and economic sectors in each country, and support  of this sector is a very important issue in many countries around the world, that one of the principles supporting the agriculture sector is offering to appropriate and inclusive services to agricultural manufacturers and actors. in this regard, the...

2008
S. O. Ojo

The study examined the effects of land acquisition for large scale farming on the performance; productivity and technical efficiency of small-scale farming in Nigeria. The primary data for the study were collected from 200 small-scale farmers selected using the multistage sampling technique, from three local government areas in Ondo State, Nigeria. The farmers were grouped into Group A: farmers...

2008
John F McCarthy

Over recent decades a structural transformation has affected agriculture in frontier areas of Malaysian Borneo and Outer Island Indonesia with the rapid conversion of agricultural lands, fallows, and formerly forested areas into oil palm. These frontiers have similar positions in the international political economy of oil palm and have complementary resource endowments. Yet there are also signi...

2006
A. A. Davis C. C. Trettin

Former agricultural lands in the southern US comprise a significant land base to support short rotation woody crop (SRWC) plantations. This study presents the seven-year response of productivity and biomass allocation in operational-scale, first rotation sycamore (Plantanus occidentalis L.) and sweetgum (Liquidambar styraciflua L.) plantations that were established on drained Ultisols which wer...

Journal: :آمایش سرزمین 0
بختیار فیضی زاده استادیار، دانشکدة جغرافیا و برنامه ریزی، دانشگاه تبریز، تبریز، ایران سعید سلمانی دانشجوی کارشناسی ارشد، دانشکدة جغرافیا و برنامه ریزی، دانشگاه تبریز، تبریز، ایران

in the present research land use changes modeling in the urmia city is considered in order to detect changes in agricultural lands. in this regard, landsat satellite images were used and then the object base processing satellite images was performed by applying the process segmentation and in the next stage, the optimization of scale segmentation and image analysis to its constituent elements, ...

2012
Jon Reich

The world population is projected to increase by nearly 30 percent and reach 9.0 billion by 2050. Increasing competition for global protein is anticipated due to this burgeoning population and from the rising demand for food and protein that is a consequence of economic development and higher income in emerging economies, most notably India and China. It has been estimated that the world’s farm...

2015
Chenchen Huo Yanyan Gao Hui Qian Jia Yang

The Northern Yinchuan Plain is a productive agricultural area of northwest China, which is under threat due to soil salinization. According to the formation and restoring history of soil salinization, the analytic hierarchy process (AHP) was adopted for analyzing the causes of soil salinization and efficiency of various restoring measures. The calculated results of the relative weights of the i...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Jeanine M Rhemtulla David J Mladenoff Murray K Clayton

One-third of net CO(2) emissions to the atmosphere since 1850 are the result of land-use change, primarily from the clearing of forests for timber and agriculture, but quantifying these changes is complicated by the lack of historical data on both former ecosystem conditions and the extent and spatial configuration of subsequent land use. Using fine-resolution historical survey records, we reco...

Journal: :Biology letters 2017
Ilsa B Kantola Michael D Masters David J Beerling Stephen P Long Evan H DeLucia

Conventional row crop agriculture for both food and fuel is a source of carbon dioxide (CO2) and nitrous oxide (N2O) to the atmosphere, and intensifying production on agricultural land increases the potential for soil C loss and soil acidification due to fertilizer use. Enhanced weathering (EW) in agricultural soils-applying crushed silicate rock as a soil amendment-is a method for combating gl...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید