搜索结果: 1-6 共查到“农学 forest soil”相关记录6条 . 查询时间(0.241 秒)
Effect of the skid trail cross section and horizontal alignment on forest soil physical properties
soil bulk density ground-based skidding cross slope Civil3D software Bahramnia forest
2017/6/26
Horizontal alignment and cross section characteristics of a skid trail in a ground-based skidding system including curves, wheel ruts and cross slope can impact on the forest soil. In this study the m...
Detection of the effects of management and physical factors on forest soil carbon stock variability in semiarid conditions using parametric and nonparametric methods
soil organic carbon CART modelling, neural networks
2015/11/26
Forest soils in western parts of Iran are being degraded by inappropriate management. The soil organic carbon (SOC) stock was dominantly affected by this type of degradation. On the other hand, SOC is...
The impacts of ground-based logging equipment on forest soil
dry bulk density moisture content
2015/5/5
Soil properties can be affected by heavy equipment used for skidding but these impacts vary greatly
with site conditions and operational practices. We assessed the effects of ground-based skidding o...
Comparison of the impact of blue spruce and reed Calamagrostis villosa on forest soil chemical properties
Calamagrostis villos upper soil layers quality and quantity Jizersk?hory Mts
2015/3/16
The impact of blue spruce (Picea pungens) and reed Calamagrostis villosa) cover on quantity and quality of upper soil layers was investigated. The research was conducted in the Jizersk?hory Mts., Czec...
Molecular size distribution and hydrophilic and hydrophobic properties of humic acids isolated from forest soil
forest soil humic acids HPSEC hydrophobic fractions hydrophilic fractions
2015/1/30
The aim of the present paper was to determine hydrophilic and hydrophobic properties and the degree of polydispersity of humic acids depending on their degree of maturity and the properties of the pla...
Soil Profile Alteration in a Brown Forest Soil under High-Input Tea Cultivation
Acidification Chemical contamination Heavy fertilizer application Soil profile alteration Tea gardens
2009/7/24
Soil Profile Alteration in a Brown Forest Soil under High-Input Tea Cultivation.