نتایج جستجو برای: actual vegetation map

تعداد نتایج: 361486  

2001
YOHAY CARMEL RONEN KADMON RONIT NIREL

Empirical modeling of vegetation dynamics can be used for predictive purposes. The goal of the present study is to construct and evaluate possible approaches for empirical modeling of vegetation dynamics, and to investigate their potential use in planning and management. An empirical model of mediterranean vegetation dynamics was constructed using a case study of vegetation change in an area in...

Introduction: Soil erosion is the most important factor in damaging and decreasing the productivity of agricultural soils. Moreover, as the transfer of sediments rich in nutrients through the soil leads to soil erosion and in turn to the decrease in the dams’ reservoirs’ storage capacity, bringing about adverse economic and eco-environmental consequences such as damage to land resources and dec...

Journal: :Remote Sensing 2014
Chiara Cilia Cinzia Panigada Micol Rossini Michele Meroni Lorenzo Busetto Stefano Amaducci Mirco Boschetti Valentina Picchi Roberto Colombo

This paper presents a method for mapping the nitrogen (N) status in a maize field using hyperspectral remote sensing imagery. An airborne survey was conducted with an AISA Eagle hyperspectral sensor over an experimental farm where maize (Zea mays L.) was grown with two N fertilization levels (0 and 100 kg N ha) in four replicates. Leaf and canopy field data were collected during the flight. The...

Journal: :جنگل و فرآورده های چوب 0
حسین پیری صحراگرد دانشگاه زابل محمدعلی زارع چاهوکی دانشکده منابع طبیعی دانشگاه تهران مجید آجورلو دانشگاه زابل محمد نهتانی دانشگاه زابل

this study aims at comparing the performance of logistic regression, maximum entropy, and multilayer perceptron techniques in preparing the predictive habitat distribution map of amygdalus scoparia in rangelands of qom province. for this purpose, vegetation sampling was done using random systematic methods after identifying pure habitats of this species. for soil sampling, eight profiles were e...

ژورنال: مرتع 2021
Bagheri, Setareh, Jafari, Mohammad, Malekian, Arash, Peyrvand, Vahid, Tamartash, Reza, Tatian, Mohammadreza,

Using satellite imagery is a reasonable option to overcome the field visits problems and limitations to evaluate the vegetation cover over the years. The present research has conducted to specify the percentage of vegetation cover of rangelands using Geographic Information System (GIS) and vegetation indices. The study area is located in Qazvin plain rangelands, Iran. In this study, the MODIS s...

2013
J Bendix

In this chapter, we review the historical arc of research on biogeomorphic interactions between fluvial geomorphology and riparian vegetation. We then report on an examination of the past 20 years of published research on this topic. Having classified studies according to the key relationships they have identified, we map those relationships to seek spatial patterns that emerge in terms of eith...

2014
Vojtěch Abraham Veronika Oušková Petr Kuneš

The REVEALS model is a tool for recalculating pollen data into vegetation abundances on a regional scale. We explored the general effect of selected parameters by performing simulations and ascertained the best model setting for the Czech Republic using the shallowest samples from 120 fossil sites and data on actual regional vegetation (60 km radius). Vegetation proportions of 17 taxa were obta...

Journal: :IJAGR 2015
Anthony R. Cummings Jane M. Read José M. V. Fragoso

Describing vegetation types is critical for managing natural resources and assessing ecosystem risk. Vegetation maps are historically produced by “Western experts,” often ignoring local-level groups critical to resource management. Indigenous hunters, as resource managers, have strong connections to their landscapes and their descriptions of vegetation within their homelands can be useful in th...

2006
Sumatra Nord

Rates in rupees are valid in India & South Asia only / Les tarifs en roupies sont valables en Inde et en Asie du Sud seulement A vegetation map may be considered in different ways, for instance as a physiognomic map showing the present state of the vegetation, or as a land use survey map. A useful purpose of this kind of map is to show the possibilities of improving production. For this we must...

2016
Kohei Arai Masaya Nakashima

Remote sensing portal site for practical uses which is dedicated to local governments is created. Key components of the site are (1) links to data providers, (2) links to the data analysis software tools, (3) examples of actual uses of the satellite remote sensing data in particular for local governments. Users’ demands for remote sensing satellite data are investigated for the local government...

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