نتایج جستجو برای: edaphic factors
تعداد نتایج: 1078744 فیلتر نتایج به سال:
Lagged precipitation effect explains a large proportion of annual aboveground net primary productivity in some dryland ecosystems. Using satellite-derived plant and datasets the Northern Hemisphere drylands during 2000–2018, we identify 1111 pixels mainly located Tibetan Plateau, western US, Kazakhstan where productivities are significantly correlated with previous-year (hereafter, lagged type)...
Abstract. Soil organic carbon (SOC) accounts for two-thirds of terrestrial carbon. Yet, the role soil physicochemical properties in regulating SOC stocks is unclear, inhibiting reliable predictions under land use and climatic changes. Using legacy observations from 141 584 profiles worldwide, we disentangle effects biotic, edaphic factors (a total 31 variables) on global spatial distribution fo...
according to webster and wind (1972) and anderson et al (1987), “organizational buying is a complex process and involves many people from different functional areas, multiple goals and potentially conflicting decision criteria. moreover, the customers of today are also more knowledgeable and selective when making their purchasing decisions. since a key to organizational survival is the retentio...
Abstract Background The functioning of ecosystems is highly variable through space and time. Climatic edaphic factors are forcing ecological communities to converge, whereas the diversity plant assemblages dampens these effects by allowing communities’ dynamics diverge. This study evaluated whether growing season phenology wetland within landscapes determined climatic/edaphic contrasted regions...
Vegetative characteristics of plant species are strongly dependent on habitat environmental conditions. Most Salt cedar (Tamarix ramosissima) individuals grow on unsuitable soil and climate conditions. One of the important habitats of this species is near Abyaneh in Isfahan Province. To investigate the relation of edaphic factors on the growth of T. ramosissima, three plots 400m2 in area were r...
The relationship between plant species and environmental factors has always been a central issue in plant ecology. With rising power of statistical techniques, geo-statistics and geographic information systems (GIS), the development of predictive habitat distribution models of organisms has rapidly increased in ecology. This study aimed to evaluate the ability of Logistic Regression Tree model ...
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