Ordination as a tool to characterize soil particle size distribution, applied to an elevation gradient at the north slope of the Middle Kunlun Mountains
نویسندگان
چکیده
منابع مشابه
تغییرپذیری فرسایش سطحی و دانهبندی ذرات خاک نسبت به جهت و درجه شیب دامنه در منطقه نیمهخشک در غرب زنجان
Soil erosion by surface runoff introduced as surface erosion is one of the main mechanisms of land degradation in the hill slopes. Slope characteristics including aspect and gradient can control the differences of soil properties along the hillslope. This study was conducted to investigate the effect of slope aspect and gradient on variations of some soil properties in the short slopes. Five hi...
متن کاملComparison of the predictive performance of two species distribution models GAM and GBM for Thymus kotschyanus in Middle Taleghan Rangelands
In this study, the prediction of Thymus kotschyanus habitat distribution was investigated using two methods of generalized additive regression model (GAM) and Boosted regression trees (BRT) in central part of Taleghan rangelands. Data on vegetation and habitat factors such as topography, climate, geology and soil were collected. For data preparation, samples were taken from the field to record ...
متن کاملPlant Diversity and Richness in Relation to Environmental Gradient in Zagros Ecosystems, West of Iran
Plant diversityis essential to maintain the health of planet's ecosystems. Conservation of biodiversity is necessary for the ecological stability and productivity in natural ecosystems. The aim of this research was to study the biodiversity and richness of plant species (including trees, shrubs and grasses) related to the environmental factors (soil and physiography) in the forests of Zagros, w...
متن کاملEffect of Slope Gradient and Soil Physical Properties on Soil Loss in Furrows of Rainfed Farms
This study was conducted to investigate the effect of slope gradient and soil physical properties (grain size distribution, bulk density, aggregate stability and permeability) on water erosion in the furrows of rainfed farms under fallow conditions. The furrows with 6 m length were installed in five rainfed farms with 6.1, 10.6, 14.8, 20.7 and 27.1% slope steepness at three replications. Resul...
متن کاملEvaluation soil erodibility in catchment of Torogh dam of Mashhad
Extended abstract 1- Introduction Soil erosion is one of the most important problems in the arid and semi-arid areas in Iran and the knowledge about its content has an important role on the management practices of soil conservation. Topography as one of the soil-making factors affects the physical properties of the soil through the aspect and the degree of the slope. The aspect of the slope c...
متن کامل