Physical, Chemical, and Morphological Characteristics of Forest Soils in the Namkaneh Region of Northern Iran
This study was carried out in four stages:1) collecting of information and records, 2) field sampling, 3) soil tests, and 4) analysis of results and conclusions. During stage 1, data and information related to climatology, pedology, topography, and silviculture were collected and entered into a Geographic Information System ( Arc View GIS Software). Considering the slope, slope aspect, and elevation, a map of landforms was created. Then, for each landform, plots of 25 hectares in size were identified. In the field, soil pits were dug in the center of each plot and at its four corners, and micro plots were established for identification and collection of the plant species present. The soil profiles corresponding to each landform were analyzed and their characteristics and vital activities (organisms and plant roots) were examined. Each soil horizon was sampled for physical and chemical tests. The samples of soils and plants were sent to the laboratory for analysis and identification. Physical analysis of the soil included the measuring of soil color, structure, consistency, and the presence or absence of clay films. Chemical analysis of the soils included, potassium, phosphorus, calcium, magnesium, organic matter content, and electrical conductivity. The results show that the soils of this region are largely acidic to neutral. Their textures vary from clay to sandy clay loam, and the surface soil horizons contain large aggregates with strong consistency. The dry color of the soil is largely brown. The nutrient elements occur in satisfactory quantities. The results of this study showed that the plants of this region are growing on nine types of soils as follows: Typic Paleudalfs, Lithic Vermudolls, Inceptic Hapludalfs, Typic Dystrudepts, Typic Hapludalfs, Humic Dystrudepts, Typic Udorthents, Inceptic Haplorendolls, and Lithic Udorthents.
Ahmady T
Scientific Islamic Azad University (Chalus Branch)
国际会议
The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会)
广州
英文
43-44
2009-05-17（万方平台首次上网日期，不代表论文的发表时间）