نتایج جستجو برای: total land output

تعداد نتایج: 1074590  

Journal: :سنجش از دور و gis ایران 0
علی اکبر متکان دانشگاه شهید بهشتی علیرضا شکیبا دانشگاه شهید بهشتی بابک میرباقری دانشگاه شهید بهشتی مهران شایگان دانشگاه تربیت مدرس محمد تناسان دانشگاه شهید بهشتی

with the increase in population and consequent increasing needs of society, land use planning is of particular importance. land use planning due to being involved with several conflicting aims, multi- objective evolutionary algorithm would be a useful tool to solve land use planning. but use of these algorithms should be examined according to the type of issues. in the study, addition to introd...

2013
Mark F. Hulme Juliet A. Vickery Rhys E. Green Ben Phalan Dan E. Chamberlain Derek E. Pomeroy Dianah Nalwanga David Mushabe Raymond Katebaka Simon Bolwig Philip W. Atkinson

Reconciling the aims of feeding an ever more demanding human population and conserving biodiversity is a difficult challenge. Here, we explore potential solutions by assessing whether land sparing (farming for high yield, potentially enabling the protection of non-farmland habitat), land sharing (lower yielding farming with more biodiversity within farmland) or a mixed strategy would result in ...

The pasture and forest land use change to agricultural use can effect on many properties of the soil and its productivity. The present research aims to investigate various forms of K (soluble, exchangeable, non-exchangeable, and structural forms) and some soil properties in different land use of three areas including Choram, Kakan and Bahmaei in Kohgiluyeh and Buyer-Ahmad Province. Four profile...

1999
SOVAN LEK MARITXU GUIRESSE JEAN-LUC GIRAUDEL

ÐThe present work describes the development and validation of an arti®cial neural network (ANN) for the purpose of estimating inorganic and total nitrogen concentrations. The ANN approach has been developed and tested using 927 nonpoint source watersheds studied for relationships between macro-drainage area characteristics and nutrient levels in streams. The ANN had eight independent input vari...

Journal: :Journal of Geophysical Research: Atmospheres 2001

2015
Changchun Huang Hao Yang Yunmei Li Jun Zou YiMing Zhang Xia Chen Yin Mi Mingli Zhang

Humans have had a significant impact on the terrestrial pedosphere through activities such as agriculture and urbanization. The effects of human activities on land use and the related environmental changes were investigated through point and areal studies surrounding Meiliang Bay, which is an open area of extreme eutrophication in Taihu Lake, China. This study used remote sensing and environmen...

Journal: :international journal of advanced biological and biomedical research 2014
fatemeh madadian chaleshtory naser honarjoo ahmad jalalian

objective: soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure. so, this research has been done for achieving this purpose. methods: this...

Journal: :مدیریت خاک و تولید پایدار 0
مسلم ثروتی عضو هیئت علمی دانشگاه ارومیه علی اصغر جعفرزاده عضو هیئت علمی دانشگاه تبریز فرزین شهبازی عضو هیئت علمی دانشگاه تبریز حسن محمدی دانشجوی کارشناسی ارشد دانشگاه شاهد نیلوفر تیمورپور دانشجوی کارشناسی ارشد

irrigular land use, land degradation and increasing yield per surface area unit supplicate to be inevitable optimal land utilization.so land evaluation, planning and management to be necessary to achieve a sustainabledevelopment.following this trend, microleis (mediterranean land evaluation information system)has evolved towards an agro-ecological decision support system.the goal of this study ...

2015
Anke Schaffartzik Helmut Haberl Thomas Kastner Dominik Wiedenhofer Nina Eisenmenger Karl‐Heinz Erb

Land use is recognized as a pervasive driver of environmental impacts, including climate change and biodiversity loss. Global trade leads to "telecoupling" between the land use of production and the consumption of biomass-based goods and services. Telecoupling is captured by accounts of the upstream land requirements associated with traded products, also commonly referred to as land footprints....

Journal: :Regional environmental change 2015
Kenneth M Sylvester Daniel G Brown Susan H Leonard Emily Merchant Meghan Hutchins

Land-use change in the U.S. Great Plains since agricultural settlement in the second half of the nineteenth century has been well documented. While aggregate historical trends are easily tracked, the decision-making of individual farmers is difficult to reconstruct. We use an agent-based model to tell the history of the settlement of the West by simulating farm-level agricultural decision makin...

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