tailieunhanh - Báo cáo lâm nghiệp: "How does legacy of agriculture play role in formation of afforested soil properties"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: How does legacy of agriculture play role in formation of afforested soil properties? | JOURNAL OF FOREST SCIENCE 55 2009 1 9-14 How does legacy of agriculture play role in formation of afforested soil properties D. Kacálek J. Novák D. Dusek J. Bartos V. Cernohous Forestry and Game Management Research Institute Strnady Opocno Research Station Opocno Czech Republic ABSTRACT Soil properties of forest ecosystems depend on synergy of both parent material and organisms living in the soil . tree species communities including related plant and animal species. However these soils were not left intact being converted into agricultural land addition of both nutrients and organic matter and cultivation using tillage led to increased fertility of topsoil. Even long-term afforested soils show differences which are considered as legacy of past agriculture. The change remains detectable for decades though the altered properties are obvious especially couple of years after planting approximately 10 years . We found increased concentrations of nutrients P K Ca and Mg and subsequent increased base saturation V in former tilled soil only. Moreover there were no differences between topsoil and subsoil properties 69 and 72 respectively . In addition to significantly lower saturation both 0-10 cm and 11-30 cm layers detected in the long-term-forest and 50-year-afforested both covered with Norway spruce stands soils in comparison with adjacent 10-year-old afforestations there was found significantly lower base saturation in topsoil horizons compared to underlying ones. Keywords afforestation agricultural land soil properties plant-available nutrients Norway spruce Soils are derived from rocks exposed at the Earth s surface weathering under particular climatic conditions in addition to inanimate environment their properties are affected by biota . bacteria fungi soil animals and plants Singer Munns 1996 . The formation of soils under natural conditions leads to creation of soil pedon mosaic within a landscape. Such soil types had developed prior to beginning of .