نتایج جستجو برای: farmland consolidation

تعداد نتایج: 22586  

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...

2017
Jason West

The boom in food prices over the past 15 years and associated volatility in food prices has prompted relatively wealthy countries dependent on imports to renew their focus on policies to enhance food security. This has in turn prompted many of them to search for opportunities to secure food supply internationally. Coupled with a depressed yields in other assets such as equities and bonds, the f...

2017
Eshetu Yirsaw Wei Wu Xiaoping Shi Habtamu Temesgen

Monitoring the impact of current Land Use/Land Cover (LULC) management practices on future Ecosystem Services (ESs) provisioning has been emphasized because of the effect of such practices on ecological sustainability. We sought to model and predict the impacts of future LULC changes on subsequent changes in Ecosystem Service Value (ESV) in fragile environments undergoing complex LULC changes, ...

2013
Margaret Walls Carolyn Kousky Ziyan Chu

Modern geographic information system (GIS) tools have allowed a more careful examination of how the physical characteristics of a property’s neighborhood and surrounding land uses are capitalized into property values. The ArcGIS Viewshed tool is a case in point: it identifies the cells in an input raster that can be seen from one or more observation points. In this study, we use the tool in a h...

Journal: :American Journal of Agricultural Economics 2001

2013
Feng Jiao Zhong-Ming Wen Shao-Shan An

The relationship between vegetation and soil moisture deserves attention due to its scientific importance and practical applications. However, the effects of soil moisture on vegetation development and succession are poorly documented. Here we study soil water storage in Yanhe watershed at northern Shaanxi on five different land uses, namely shrubland, farmland, natural grassland, woodland, and...

2015
Jinfeng Wang Yanchun Gao Sheng Wang Assefa M. Melesse

Groundwater resources are becoming the primary factor for maintaining life in arid areas. Understanding land use/cover change and its effect on groundwater depth would enhance land use and groundwater management for typical desert-oasis transition zones. Reduction of groundwater recharge and increase of groundwater exploitation during 1985 and 2010 led to the decrease of groundwater depth in Li...

2012
Xuedong Yan Fan Zhang Chen Zeng Man Zhang Lochan Prasad Devkota Tandong Yao

Transportation activities can contribute to accumulation of heavy metals in roadside soil and grass, which could potentially compromise public health and the environment if the roadways cross farmland areas. Particularly, heavy metals may enter the food chain as a result of their uptake by roadside edible grasses. This research was conducted to investigate heavy metal (Cu, Zn, Cd, and Pb) conce...

2014
Fulin Yang Qiang Zhang Runyuan Wang Jing Zhou

Evapotranspiration (ET) is an important component of the surface energy balance and hydrological cycle. In this study, the eddy covariance technique was used to measure ET of the semi-arid farmland ecosystem in the Loess Plateau during 2010 growing season (April to September). The characteristics and environmental regulations of ET and crop coefficient (Kc) were investigated. The results showed...

Journal: :international journal of environmental research 0
p. hyun il general manager, institute of technology, samsung c & t, 23th fl., samsung corp. bldg. 1321-20, seocho2-dong, seocho-gu, seoul, korea p. borinara assistant professor, department of technology, illinois state university, normal, il 61709 usa k.d. hong principal researcher, research center, kepri, kepco. daejon-si, korea

geotechnical investigations of waste fills are rarely undertaken, and consequently the geotechnical community has little knowledge of their engineering properties. in this study, a geotechnical testing program was conducted to evaluate the engineering properties of old municipal solid waste sampled in whamyung msw landfill site, busan, korea. the conducted tests included water content, specific...

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