نتایج جستجو برای: agricultural lands

تعداد نتایج: 109751  

2011
Cesar Alberto Meza-Herrera Luis Carlos Hernández-Valenzuela Antonio González-Bulnes Manuel Tena-Sempere Jose Abad Homero Salinas-Gonzalez Miguel Mellado Francisco Veliz-Deras

Cesar Alberto Meza-Herrera, Luis Carlos Hernández-Valenzuela, Antonio González-Bulnes, Manuel Tena-Sempere, Jose AbadZavaleta, Homero Salinas-Gonzalez, Miguel Mellado, Francisco Veliz-Deras Chapingo Autonomous University, Universitary Regional Unit on Arid Lands, Mexico; Department of Animal Reproduction, INIA, Madrid, Spain; University of Cordoba, & CIBER Physiopathology of Obesity and Nutriti...

2010
ARVO TULLUS MALLE MANDRE

Concentrations of cellulose, lignin and nutrients in the stemwood of four clones of 7-year-old hybrid aspen (Populus tremula L. x P. tremuloides Michx.) were studied on 50 permanent experimental plots established for the afforestation of abandoned agricultural lands in Estonia. Quantitative evaluation of hybrid aspen chemical components indicated a relatively high cellulose and low acid-insolub...

2012
Vudipong Davivongs Makoto Yokohari Yuji Hara

This paper discusses the deterioration of indigenous irrigation system traditionally developed in the past to serve the peri-urban agricultural lands that have been affected by rapid urbanization in the Bangkok Metropolitan Region. The study is based on data collection from mapping, field survey and interview analyses and identifies current canal deteriorating conditions in four categories: fil...

Journal: :Environmental management 2014
Margaret Kalcic Linda Prokopy Jane Frankenberger Indrajeet Chaubey

Watershed managers have largely embraced targeting of agricultural conservation as a way to manage strategically non-point source pollution from agricultural lands. However, while targeting of particular watersheds is not uncommon, targeting farms and fields within a specific watershed has lagged. In this work, we employed a qualitative approach, using farmer interviews in west-central Indiana ...

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...

Journal: :Ecology letters 2011
Lenore Fahrig Jacques Baudry Lluís Brotons Françoise G Burel Thomas O Crist Robert J Fuller Clelia Sirami Gavin M Siriwardena Jean-Louis Martin

Biodiversity in agricultural landscapes can be increased with conversion of some production lands into 'more-natural'- unmanaged or extensively managed - lands. However, it remains unknown to what extent biodiversity can be enhanced by altering landscape pattern without reducing agricultural production. We propose a framework for this problem, considering separately compositional heterogeneity ...

Journal: :پژوهش و برنامه ریزی روستایی 0
غلامحسین عبدالله زاده مهدیه چنگیزی محمد شریف شریف زاده

1. introduction the phenomenon of land consolidation has been the concern of economists, geographers, soil scientists, anthropologists, and politician in the last decades. it has achieved little success for agricultural development in iran. most of iranian land consolidation schemes ignore to meet sustainability criteria as a critical phase in the planning process. therefore, they have caused m...

2014
Patrick Meyfroidt Kimberly M Carlson Matthew E Fagan Victor H Gutiérrez-Vélez Marcia N Macedo Lisa M Curran Ruth S DeFries George A Dyer Holly K Gibbs Eric F Lambin Douglas C Morton Valentina Robiglio

Commodity crop expansion, for both global and domestic urban markets, follows multiple land change pathways entailing direct and indirect deforestation, and results in various social and environmental impacts. Here we compare six published case studies of rapid commodity crop expansion within forested tropical regions. Across cases, between 1.7% and 89.5% of new commodity cropland was sourced f...

2013
Camilo Alcantara Tobias Kuemmerle Matthias Baumann Eugenia V Bragina Patrick Griffiths Patrick Hostert Jan Knorn Daniel Müller Alexander V Prishchepov Florian Schierhorn Anika Sieber Volker C Radeloff

The demand for agricultural products continues to grow rapidly, but further agricultural expansion entails substantial environmental costs, making recultivating currently unused farmland an interesting alternative. The collapse of the Soviet Union in 1991 led to widespread abandonment of agricultural lands, but the extent and spatial patterns of abandonment are unclear. We quantified the extent...

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