Search results for " land"
showing 10 items of 3130 documents
BEST-2K Method for Characterizing Dual-Permeability Unsaturated Soils with Ponded and Tension Infiltrometers
2019
This study presents a new method (BEST-2K) that extends the existing BEST methods for use in characterizing the water retention and hydraulic conductivity functions of matrix and fast-flow regions in dual-permeability soils. BEST-2K requires input information from two water infiltration experiments that are performed under ponded (Beerkan) and unsaturated (tension infiltrometer) conditions at the surface. Other required inputs include water content measurements and the traditional BEST inputs (particle size distribution and bulk density). In this study, first, a flowchart of the BEST-2K method was developed and illustrated with analytically generated data for a synthetic dual-permeability s…
A Territorial Approach to the Production of Urban and Rural Landscape.
2018
The authors, starting from the examination of the historic data of Palermo landscapes on the south-east side, draws up an analysis of the landscape by illustrating the environmental characteristics and the intervention of man in its transformations. Therefore, determined by a certain point to refer to, the author, on the basis of archival, literary, and existing graphic documentation, has therefore sought to illustrate the evolution of the landscape in the geographical area of Maredolce while still presenting relations with the territory of Palermo. Examining the diaries at the end of the eighteenth century with the help of the water colored planks of the sites taking into account the great…
Lignin oxidation products in soil, dripwater and speleothems from four different sites in New Zealand
2020
Lignin oxidation products (LOPs) are widely used as vegetation proxies in climate archives, such as sediment and peat cores. The total LOP concentration, Σ8, provides information on the abundance of vegetation, while the ratios C/V and S/V of the different LOP groups also provide information on the type of vegetation. Recently, LOP analysis has been successfully applied to speleothem archives. However, there are many open questions concerning the transport and microbial degradation of LOPs on their way from the soil into the cave system. These processes could potentially alter the original source-dependent LOP signals, in particular the C/V and S/V ratios, and thus complicate their interpre…
Quantification of lignin oxidation products as vegetation biomarkers in speleothems and cave drip water
2018
Here we present a sensitive method to analyze lignin oxidation products (LOPs) in speleothems and cave drip water to provide a new tool for paleo-vegetation reconstruction. Speleothems are valuable climate archives. However, compared to other terrestrial climate archives, such as lake sediments, speleothems contain very little organic matter. Therefore, very few studies on organic biomarkers in speleothems are available. Our new sensitive method allows us to use LOPs as vegetation biomarkers in speleothems. Our method consists of acid digestion of the speleothem sample followed by solid-phase extraction (SPE) of the organic matter. The extracted polymeric lignin is degraded in a microwave-a…
Climate and extreme rainfall events in the Mono river basin (West Africa): investigating future changes with Regional Climate Models.
2020
This study characterizes the future changes in extreme rainfall and air temperature in the Mono river basin where the main economic activity is weather dependent and local populations are highly vulnerable to natural hazards, including flood inundations. Daily precipitation and temperature from observational datasets and Regional Climate Models (RCMs) output from REMO, RegCM, HadRM3, and RCA were used to analyze climatic variations in space and time, and fit a GEV model to investigate the extreme rainfalls and their return periods. The results indicate that the realism of the simulated climate in this domain is mainly controlled by the choice of the RCMs. These RCMs projected a 1 to 1.5 °
Optimal Solutions for the Use of Sewage Sludge on Agricultural Lands
2021
The use of sewage sludge in agriculture decreases the pressure on landfills. In Romania, massive investments have been made in wastewater treatment stations, which have resulted in the accumulation of important quantities of sewage sludge. The presence of these sewage sludges coincides with large areas of degraded agricultural land. The aim of the present article is to identify the best technological combinations meant to solve these problems simultaneously. Adapting the quality and parameters of the sludge to the specificity of the land solves the possible compatibility problems, thus reducing the impact on the environment. The physico-chemical characteristics of the fermented sludge were …
A New Water Governance Model Aimed at Supply–Demand Management for Irrigation and Land Development in the Mendoza River Basin, Argentina
2019
This study aimed at achieving an organizational solution for improving the governance of water and land use and, consequently, improving the supply&ndash
Impact of Farmland Abandonment on Water Resources and Soil Conservation in Citrus Plantations in Eastern Spain
2019
Due to the reduction in the prices of oranges on the market and social changes such as the ageing of the population, traditional orange plantation abandonment in the Mediterranean is taking place. Previous research on land abandonment impact on soil and water resources has focused on rainfed agriculture abandonment, but there is no research on irrigated land abandonment. In the Valencia Region&mdash
Andamento dei valori fondiari in Italia ed in Sicilia
2013
The present study has two aims, to provide a further contribute to the literature on land market, and to highlight the possible relationships between some macroeconomic factors affecting the land values trend in Italy and in Sicily. The data obtainable from the available information sources in the field were collected and processed. More in detail, in the first part of the paper a reference scenario is described through the presentation of the general features of agricultural land market, relying upon the specific scientific literature. Hereinafter, some time series at national and Sicilian level were built by using average agricultural land values, inflation rates and agricultural value ad…
Elementi critici e «casi-studio» della VIA delle infrastrutture viarie
2009
The infrastructures in-form (or de-form) territorial systems, since they produce the structure which multiple interrelations are plotted on. The foundation of a consensual language dominion, which the social integration of environmental values is based on, can be obtained by going on with the epistemological renewal of the Science of evaluation (Rizzo 1972 e 1999). The EIA can harmonize environmental values with economic, ethic, aestetic, political and cultural values. The EIA analysis of two road-infrastructures (the Bridge on the straits of Messina and the railway Siracusa-Gela) pointed out that there is a communicative gap among political, juridical, administrative and estimative areas, …