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Issuesutilisation des terresLandLibrary Resource
There are 9, 839 content items of different types and languages related to utilisation des terres on the Land Portal.
Displaying 877 - 888 of 4598

SAC-SMA a priori parameter differences and their impact on distributed hydrologic model simulations

Journal Articles & Books
Décembre, 2012
États-Unis d'Amérique

Deriving a priori gridded parameters is an important step in the development and deployment of an operational distributed hydrologic model. Accurate a priori parameters can reduce the manual calibration effort and/or speed up the automatic calibration process, reduce calibration uncertainty, and provide valuable information at ungauged locations. Underpinned by reasonable parameter data sets, distributed hydrologic modeling can help improve water resource and flood and flash flood forecasting capabilities.

36year trends in dissolved organic carbon export from Finnish rivers to the Baltic Sea

Journal Articles & Books
Décembre, 2012
Finlande

Increasing dissolved organic carbon (DOC) concentrations in lakes, rivers and streams in northern mid latitudes have been widely reported during the last two decades, but relatively few studies have dealt with trends in DOC export. We studied the export of DOC from Finnish rivers to the Baltic Sea between 1975 and 2010, and estimated trends in DOC fluxes (both flow normalised and non-normalised). The study encompassed the whole Finnish Baltic Sea catchment area (301,000km²) covering major land use patterns in the boreal zone.

Landslide susceptibility mapping along Kolli hills Ghat road section (India) using frequency ratio, relative effect and fuzzy logic models

Journal Articles & Books
Décembre, 2015
Inde

This article emphasizes landslide susceptibility mapping along Ghat road of Kolli hills, Tamil Nadu, India, using frequency ratio, relative effect and fuzzy gamma operator models with the help of remote sensing data and GIS technique. The purpose of the study is to generate, compare and validate landslide susceptibility zones. Landslide inventory was done with data collected from the State Highways department.

Evaluation of the Conservation Reserve Program: Disaggregate slippage

Conference Papers & Reports
Décembre, 2011

Among multiple slippage effects potentially generated in voluntary land retirement programs, this study attempts to identify one unique source of slippage. Specifically, I examine slippage caused by within-a-farm land conversion from uncultivated land to cropland. With the U.S. Agricultural Census farm-level longitudinal data on land use and enrollment in the Conservation Reserve Program (CRP), I find that an average partial-farm CRP participant converts 25% of noncropland to cropping activities as a consequence of CRP enrollment.

The improvement of the content and methods of intra-farm land use planning in the conditions of transition to market economy

Journal Articles & Books
Décembre, 2011
Bélarus

In the conditions of the Republic of Belarus there were examined different formulations of a notion and term of 'land use', there was presented its content taking into account modern conditions. There was shown the notion and content of intra-farm land use planning of agricultural organizations; its content updated with the issues on ecologization of land use planning. There was suggested an energy approach to the economic estimation of taken project decisions made in land use planning.

Enabling the uptake of livestock-water productivity interventions in the crop-livestock systems of sub-Saharan Africa

Journal Articles & Books
Décembre, 2009
Afrique

Livestock-water productivity (LWP) refers to a set of innovations that could contribute towards reducing the amount of water needed per unit of output generated. But what does it take to get these ideas adopted by livestock keepers in crop-livestock systems? In this paper, we treat LWP as an innovation, and consider in what ways it may be introduced and/or developed among the crop-livestock agricultural systems by drawing on successful examples of change.

The role, meaning and the main parameters of intra-farm organization of the territory of agricultural enterprise

Journal Articles & Books
Décembre, 2011
Bélarus

In the conditions of the Republic of Belarus there was formulated a term of intra-farm organization of the territory of an agricultural enterprise. There was examined its content, role and meaning in the organization of agricultural production. On-farm organization of a territory of an agricultural enterprise represents a regularization of allocation of a complex of interrelated and interdependent sustainable elements of a territory which included natural and anthropogenic objects. There were presented the parameters, which characterized intra-farm organization of the territory.

Farm and Village Forest Use Practice in Ekiti State: Analysis of Government Policy and Tenure Issues

Journal Articles & Books
Décembre, 2011
Nigéria

This study analyzed the influence of government policy and tenure issues on farm and village forest use practices in Ekiti State, Nigeria. Three rural communities that were still far from urban influence were selected from each of the 16 local government areas of the state. In each community, 20 household heads were selected and interviewed with the aid of a semi-structured matrix. The interviews aimed at the determination of respondents' socioeconomic status, awareness and belief in the effectiveness or otherwise of the forest laws and regulations, land use, tenure and property rights.

Conservational use of remote sensing techniques for a novel rainwater harvesting in arid environment

Journal Articles & Books
Décembre, 2014
Arabie saoudite

Remote sensing applications in water resources management are becoming an essential asset in all different levels of integrated water rational use. Due to remote sensing data availability and different acquisition sensors of satellite images, a wide variability of benchmarks could be conducted under the same theme. Rainwater harvesting is the branch of science where the rainwater is the main target to improve groundwater recharge, stratocumulus clouds are the main source of rain in arid regions.

Carbon Storage by Urban Soils in the United States

Journal Articles & Books
Décembre, 2006
Hong Kong
États-Unis d'Amérique

We used data available from the literature and measurements from Baltimore, Maryland, to (i) assess inter-city variability of soil organic carbon (SOC) pools (1-m depth) of six cities (Atlanta, Baltimore, Boston, Chicago, Oakland, and Syracuse); (ii) calculate the net effect of urban land-use conversion on SOC pools for the same cities; (iii) use the National Land Cover Database to extrapolate total SOC pools for each of the lower 48 U.S. states; and (iv) compare these totals with aboveground totals of carbon storage by trees.

Geographical downscaling of outputs provided by an economic farm model calibrated at the regional level

Journal Articles & Books
Décembre, 2012

There is a strong need for accurate and spatially referenced information regarding policy making and model linkage. This need has been expressed by land users, and policy and decision makers in order to estimate both spatially and locally the impacts of European policy (like the Common Agricultural Policy) and/or global changes on farm-groups. These entities are defined according to variables such as altitude, economic size and type of farming (referring to land uses).