نتایج جستجو برای: land use efficiency

تعداد نتایج: 2128140  

Efficient use of assets in agriculture is a goal for policy-makers and farmers. Agricultural input resources are scarce therefore optimum use of inputs in different agricultural operations is important. Mathematical programming technique such as data envelopment analysis (DEA) is a well-known approach for estimation efficiency of agricultural DMUs. In this study, efficiency of kidney bean produ...

Journal: :آب و توسعه پایدار 0
مرضیه رسولی علی حقی زاده حسین زینی وند علی رضا ایلدرمی

land-use change affects a number natural processes such as soil erosion, sedimentation, flooding and destruction of soil physical and chemical properties. this change of ecosystem causes the degradation of soil quality which eventually leads to a severe decrease in soil fertility. therefore, various aspects of land-use change should be taken into account in national major decision makings. this...

2015
Jinfeng Du Jean-Claude Thill Richard B. Peiser

a r t i c l e i n f o Keywords: Land use efficiency Land use productivity Land pricing Beijing China This paper analyzes how the newly introduced land pricing system affects urban land productivity in China, taking post-land-reform Beijing as an example. China has been developing its urban land market by building an effective pricing system. This study indicates that the effects of such pricing...

2017
Huikun Hong Deti Xie Heping Liao Bo Tu Jun Yang

Research on the land use efficiency of rural living spaces is at the core of conflicts about current rural land use and ecological environment construction in China. It can be effectively dealt with through the rational and healthy use of rural land, by promoting sustainable development and urban and rural coordination. Building on the foundation of ecosystem metabolism and sustainable developm...

Journal: :اکو هیدرولوژی 0
سهیلا آقابیگی امین استادیار گروه منابع طبیعی، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی علیرضا ایلدرومی دانشیار گروه مرتع و آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه ملایر حمیدرضا نوری استادیار گروه مرتع و آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه ملایر افسانه حقیقی کرمانشاهی دانش آموختۀ رشتۀ آبخیزداری، گروه مرتع و آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه ملایر

the devastating impact of land use change in the watershed is increasing the generation rate of sediment and entrance to rivers and sedimentation in reservoirs. according to this, studying on impact of land use change on hydrological process is necessary. aim of this study was investigating the impact of land use change on suspended sediment during 1994 to 2010 by swat model in dinevar watershe...

Journal: :The International Journal of Life Cycle Assessment 2015

2002
Indur M. Goklany

Globally and in the United States, agriculture is the major user not only of water but also of land. This paper compares trends in aggregate and per capita water and land use by the agricultural sector in the United States and the world during the 20 century. It finds that although cropland use per capita has been declining in both areas since the early 1900s, agricultural water use per capita ...

Journal: :Investytsiyi: praktyka ta dosvid 2019

2015
Wang Kaiyong Zhang Pengyan

Based on the background of construct the national grain strategy project of Henan province core and construct Zhongyuan Economic Zone, considering the Henan province's cultivated land resources use efficiency and food security, using multiple linear regression model and the principal component analysis to analyze the cultivated land resources’ use efficiency between 1999-2008 of Henan province,...

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