The establishment of Christmas tree plantations over the last 50 years in Greece has provided an additional income for the inhabitants of certain mountainous and semi-mountainous regions of the country and contributed to their development. In this paper is used a neural network which combined with ARIMA which makes forecast of number of actually cut Christmas trees until the year 2015.

The University of Western Macedonia (UoWM) has recently set up an operational system for predicting air quality in the Florina–Ptolemais–Kozani basin in Western Macedonia, Greece. This is a mountainous basin where around 65% of the total energy production of Greece takes place in lignite power plants. The concentrations of PM10 is the main air quality concern in the region, and the high particu...

Concentrations of ozone often exceed the thresholds of forest protection in the Pyrenees, but the effect of ozone on Pinus uncinata, the dominant species in subalpine forests in this mountainous range, has not yet been studied. We conducted an experiment of free-air ozone fumigation with saplings of P. uncinata fumigated with ambient O(3) (AOT40 May-Oct: 9.2 ppm h), 1.5 × O(3amb) (AOT40 May-Oct...

The last experiences showed that spectral data have not sufficient to classify forest types in the mountainous area. In order to clear abilities of spatial models to classify forest types and improve results, an investigation was planned in a case study in the northern forests of Iran by ETM+ data. The spatial models based on aspect, elevation, incorporated aspect-height and homogenous units co...

â â â  this paper attempts to investigate the relationship between 500hpa circulation patterns and weather types (coldest, warmest and raining) over 16 synoptic stations of mountainous region of iran. the mountainous region of iran covers about 670000 square kilometer (41 percent) of iran. in this paper have been investigated the relationship between circulation patterns in 500hpa level with we...

RESUME The 1992 Landers earthquake is perhaps the most famous earthquake for InSAR, having been the subject of many different scientific journal, magazine and newspaper articles. This plethora of papers means that the site is very well known and any attempt to process the data should be able to confidently predict the results. The ambiguity search method, proposed in 2003, offers a potential pr...

Four radiometric correction methods for the reduction of slope-aspect effects in a Landsat TM data set are tested in a mountainous test site with regard to their physical soundness, their influence on a forest classification as well as on the visual appearance of the scene. Excellent ground reference information and a fine resolution DEM allowed a precise assessment of the applicability of the ...

The IRS-1D LISS III false colour composite (FCC) decoded imagery belonging to Kosi river watershed of Almora district of Uttaranchal under warm humid Lesser Himalayan agro-ecological region was interpreted and surveyed for soil resource mapping. On the basis of image interpretation and ground truth study ten physiographic units were identified. Soil physiography relationship was established on ...

Rice acreage estimation is a key aspect to guarantee food security and also important to support government agricultural subsidy system. In this paper, we explored a sophisticated method to improve rice estimation accuracy at county scale and we developed our approach with China Environment Satellite HJ-1A/B data in Hunan Province, a fragmented area with complex rice cropping patterns. Our appr...

The augmentation of DGPS with ground-based GPS transmitters (pseudolites, or PLs) was investigated. A simulation analysis was conducted to determine the effects of PL augmentation on DGPS availability, accuracy and reliability measures, using various constant mask angles and a " real-world " horizon (measured at Lake Okanagan, British Columbia) plus a simulated obstruction. Field tests in the m...