نتایج جستجو برای: stipa hohenckeriana
تعداد نتایج: 511 فیلتر نتایج به سال:
Dans cette note, les auteurs confirment la présence de Stipa apertifolia subsp. longiglumis (H. Scholz) Vázquez & Devesa dans l’Atlas saharien occidental. De même, ils actualisent connaissances sur son écologie, statut conservation et celui endémicité.
OBJECTIVE In order to improve fermentation quality of natural grasses, their silage preparation and fermentation quality in meadow steppe (MS) and typical steppe (TS) were studied. METHODS The small-scale silages and round bale silages of mixed natural grasses in both steppes were prepared using the commercial lactic acid bacteria (LAB) inoculants Chikuso-1 (CH, Lactobacillus plantarum) and c...
We present the calibration of a fast and non-destructive method to estimate aboveground plant biomass measuring vegetation cover. We double-sampled vegetation cover and aboveground biomass in the Patagonian steppe using 150 plots for shrubs and 50 plots for grasses. We performed simple linear regressions between vegetation cover and biomass for the dominant species and life forms (shrubs: Mulin...
The landscapes of Inner Mongolia are widely known for the vast Stipa krylovii steppes. However, overgrazing and other improper land uses have extensively degraded the Stipa krylovii steppe ecosystem in recent decades. Knowledge about the soil seed banks and the remaining vegetation in these damaged ecosystems is crucial for guiding the restoration efforts. Using a germination method, this study...
ارایهی روشی دقیق، سریع و کم هزینه برای تعیین تولید گیاهان مرتعی یکی از اهداف بوم شناسان به ویژه مرتعداران است که همیشه علاقهمند به دانستن میزان تغییرات این ویژگی گیاهی هستند. هدف اصلی این تحقیق، تعیین روابطی بین متغیرهای سطح تاجپوشش، حجم و ارتفاع با تولید گونههای atriplex canescens، acanthophyllum squarrosum، lactuca orientalis، astragalus meshedensis و stipa barbata در مراتع جنوب بیرجند ...
This study aimed at investigating the potential of vegetation indices and precipitation-related variables derived from remote sensing to assess rangeland production in arid environment Moroccan Oriental region identifying challenges linked that particular biome. Vegetation (VIs) Standardized Precipitation Index (SPI) computed various aggregation periods were first integrated into a Random Fores...
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