نتایج جستجو برای: mountainous
تعداد نتایج: 6291 فیلتر نتایج به سال:
Biodiversity of the genus Medicago in Iran was studied. Distribution of two perennial species M. sativa and M. lupulina mainly conforms to the mountainous regions of Iran. Among the other annual species of this genus, M. rigidula has the most similar distribution to the distribution of perrenial species in mountainous regions. Most species of Medicago (apart from M. sativa and M. lupulina) are ...
A main task in agriculture production is field management of water and fertilizer. Excessive fertilizer and water application not only waste resource but also pollute the environment. The traditional principle of digital agriculture can only apply in flat or plain place where a large field usually should be partitioned evenly into many little grids and thus decisions on grid-specific agronomic ...
Two new carabid beetle species, Pterostichus (Aphaonus) mariamae sp. nov. and Pterostichus (Aphaonus) svetlanae sp. nov., related to an enigmatic mountainous representative of the subgenus Aphaonus, P. (Aphaonus) arcanoides Lorenz, 1998, are described from the Abkhazian midlands (Tsebelda Plateau and Mtsara district). Discriminative features of the new species in the subgenus are briefly discus...
Two new species of the genus Fittkauimyia from Brazil are described and illustrated. Fittkauimyia mayumiae sp. n. from Amazonian forest is described based on adult male, female and pupae and F. carranquensis sp. n. from mountainous region of southeast is described based on adult male and pupae.
We present a method for improving relief reconstruction from SAR stereo images, relying on preprocessing of input data with an optimal filter. This filter strongly reduces speckle noise and enhances relief structures, leading to better matching results. The method was tested using X-SAR data of a mountainous site whose DEM was available for control.
The legacy of uranium production threatens the environment and public security in Kyrgyzstan and neighboring countries. The key ecological problems include: pollution of the environment with radionuclides; increasing risk of RAW tailing dumps destruction due to climate change, natural disasters and anthropogenic catastrophes which are typical for mountainous and seismic regions, and large land ...
Three new species: Rhyacobates zetteli sp.n., R. angustus sp.n., and R. constrictus sp.n., all from mountainous areas of northern Vietnam, are described. With these new taxa, a total of six species of Rhyacobates has been recorded from Vietnam. A key to species of Rhyacobates occurring in Vietnam is provided.
The subgenus Scaptia (Lepmia) Fairchild, known only from mountainous areas of Southeast of Brazil, is redescribed and illustrated. It is contrasted with similar species of Scaptia (Pseudoscione). It is more similar to the Australian Myioscaptia and Plinthina than to the other New World Scaptia subgenera.
A time-varying regression model is considered, based on monthly precipitation data from gauge measurements. The model accounts for orographic effects, that is elevation and aspect of the terrain. The study area is NCDC climate division 2 in a mountainous area in northern New Mexico. We assess spatio-temporal variability and also trace the dependence of precipitation on El Niño/Southern Oscillat...
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