Fertility indicators in temperate forest soils: issues, approaches and prospects
نویسندگان
چکیده
The fertility of a soil classically refers to an aptitude to produce plant biomass, under a given set of climatic and topographic conditions; it therefore contributes to an ecosystemic supply service (MEA, 2005). It is generally subdivided into three components – chemical, physical and biological – which are closely linked (Genot et al., 2009). The chemical component describes the ability of the soil to supply the nutrients that are essential to the plant, in the appropriate forms, quantities and proportions; it is itself broken down into three components that target fertility in the short, medium and long term, respectively. It also considers the risks of toxicity linked to some elements, such as aluminium. The physical component takes into account the properties that influence the soil water regime (storage capacity and infiltration), as well as root prospection and biological activity (porosity, compactness, stoniness and aeration). Lastly, the biological component corresponds to the influence exerted by living organisms on the availability of mineral elements (through weathering, recycling or symbioses) and on the physical condition of the soil.
منابع مشابه
Comparison of Archaeal Communities in Mineral Soils at a Boreal Forest in Finland and a Cold-Temperate Forest in Japan
Archaeal communities in mineral soils were compared between a boreal forest in Finland and cold-temperate forest in Japan using 16S rRNA gene-targeted high-throughput sequencing. In boreal soils, Thaumarchaeota Group 1.1c archaea predominated and Thaumarchaeota Group 1.1a-associated and Group 1.1b archaea were also detected. In temperate soils, Thaumarchaeota Group 1.1a-associated and Group 1.1...
متن کاملForest turnover rates follow global and regional patterns of productivity.
Using a global database, we found that forest turnover rates (the average of tree mortality and recruitment rates) parallel broad-scale patterns of net primary productivity. First, forest turnover was higher in tropical than in temperate forests. Second, as recently demonstrated by others, Amazonian forest turnover was higher on fertile than infertile soils. Third, within temperate latitudes, t...
متن کاملBio-indicators in the tropical forest of Western Ghats environment
Background: Investigation on the natural radionuclides 238U, 232Th, 40K and natural fallout radionuclide 210Po in the prominent plants species of Western Ghats tropical forest near Kotagiri have been carried out as a part of baseline background radiation studies in the forest environment. Materials and Methods: The prominent plants species of the region Evodia roxburghiana and Eleaoca...
متن کاملVariations of Soil Fertility Following the Oak Deforestation in Miankooh Region, Shahrekord
Extended abstract 1- Introduction Land-use change has been extensively considered by farmers as an easily available approach with the aim of finding new resources for producing more agricultural products. Deforestation, the most common type of land-use change, has led to the extensive parts of productive lands in different parts of the world being highly degraded. Rainfed farming can be liste...
متن کاملBio-indicators in the tropical forest of western Ghats environment
Introduction: Investigation on the natural radionuclides 238U, 232Th, 40K and natural fallout radionuclide 210Po in the prominent plants species of Western Ghats tropical forest near Kotagiri have been carried out as a part of baseline background radiation studies in the forest environment. Materials and Methods: The prominent plants species of the region Evodia roxburghiana and Eleaocarpus obl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015