Utilización de la tierra
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Uncertainty in ecosystem mapping by remote sensing
The classification of remotely sensed images such as aerial photographs or satellite sensor images for deriving ecosystem-related maps (e.g., land cover, land use, vegetation, soil) is generally based on clustering of spatial entities within a spectral space. In most cases, Boolean logic is applied in order to map landscape patterns. One major concern is that this implies an ability to divide the gradual variability of the Earth's surface into a finite number of discrete non-overlapping classes, which are considered to be exhaustively defined and mutually exclusive.
Cultural heritage, sustainable forest management and property in inland Spain
Forest planning and traditional knowledge in collective woodlands of Spain: The dehesa system
Local assessment of changes in water-related ecosystem services and their management: DPASER conceptual model and its application in Taita Hills, Kenya
Fresh water provisioning is a crucial ecosystem service (ES) in the agrarian societies of East Africa. Water resources are highly dependent on several other ES such as the water retention capacity of vegetation and the purification properties of soil. However, ES are constantly challenged by dynamic changes within water–land–vegetation–human relations. Environmental policies usually address immediate anthropic pressures but overlook multiple historical stressors, or ‘drivers’.
urban forest-inventory-and-analysis investigation in Oregon and Washington
The U.S. Department of Agriculture (USDA) Forest Service, Forest Inventory and Analysis program recently inventoried trees on 257 sample plots in the urbanized areas of Oregon and Washington. Plots were located on the standard grid (â1 plot/2428ha) and installed with the 4-subplot footprint (â.067ha with 4 circular subplots).
Modelling of non-point source pollution in a watershed using remote sensing and gis
Assessment of the environmental impact of Non Point Source (NPS) pollutants on a global, regional and localized scale is the key component for achieving sustainability of agriculture as well as preserving the environment. The knowledge and information required to address the problem of assessing the impact of NPS pollutants like Nitrogen (N), Phosphorus (P), etc., on the environment crosses several sub-disciplines like remote sensing, Geographical Information System (GIS), hydrology and soil science.
Physico-chemical analysis of surface and groundwater around Singrauli Coal Field, District Singrauli, Madhya Pradesh, India
The present study was carried out in Singrauli area of the north India to know the water quality at selected sites. Physico-chemical parameters like pH, total dissolved solids (TDS), bicarbonate, hardness, calcium, magnesium, sodium, potassium, chloride, sulfate, copper, iron, cobalt, manganese, zinc, and chromium were analyzed in 27 water samples. Locations selected for sampling were based on the preliminary field survey carried out to understand the overall impact of mining and industrialization on the surface and groundwater resources of Singrauli.
Assessing the effects of long-term recreational activities on landscape changes in Abant Natural Park, Turkey
Natural, protected areas offer many possibilities for recreation in rural areas such as camping, one of the most popular activities. The system established for protected areas in Turkey aims to provide a foundation for conserving areas for recreation. One such area, Abant Natural Park, is convenient for visits from Turkey’s two most populated metropolitan areas, Istanbul and Ankara. It also attracts tourists from other regions and countries.
Land Use and Greenhouse Gas Implications of Biofuels: Role of Technology and Policy
This paper examines the extensive and intensive margin changes in land use in the U.S. likely to be induced by biofuel policies and the implications of these policies for GHG emissions over the 2007-2022 period. The policies considered here include the Renewable Fuel Standard (RFS) by itself as well as combined with current biofuel tax credits or a carbon price policy.
Agriculture Land Suitability Evaluator (ALSE): A decision and planning support tool for tropical and subtropical crops
Agricultural land suitability evaluation for crop production is a process that requires specialized geo-environmental information and the expertise of a computer scientist to analyze and interpret the information. This paper presents ALSE, an intelligent system for assessing land suitability for different types of crops in tropical and subtropical regions (e.g. mango, banana, papaya, citrus, and guava) based on geo-environmental factors that automates the process of evaluation and illustrates the results on an attribute table.
Maize in North Veracruz State, Mexico: Farmer practice and research opportunities
This report exemplifies the short, well-focuses formal survey emphasized in CIMMYT's on-farm research procedures. The survey was done in northern Veracruz, Mexico, where CIMMYT Maize Production Training carries out on-farm experiments. The report summarizes farmers' circumstances, describes management practices in maize, and draws conclusions for research opportunities.