Daytime xylem sap flow was measured by the compensation heat pulse velocity technique in dipterocarp forest trees growing on sandy loam (haplic acrisol) and in heath forest trees growing on bleached sand (albic arenosol) in Brunei during wet and dry periods. In dipterocarp forest trees, daily sap flow was stable during the dry period but declined on rainy days presumably as a result of reduced ...

Conversions of natural vegetation into pasture can, in a short time, change the carbon stock and abundance δ13C soil. The objective this study was to evaluate changes (C) nitrogen (N) stocks, as well δ15N Argissolo Vermelho distrófico (Acrisol), an area planted Cerrado region Aquidauana (MS), Brazil. In order do this, (PA), cultivated for 25 years with Urochloa brizantha, (NV) were evaluated. S...

ABSTRACT There is an ever-growing need for soil maps, since detailed information directly related to agricultural activities, urbanization and environmental protection. However, there a lack of large-scale maps in developing tropical countries such as Brazil. Albeit are small areas, large regions usually have undetailed maps. Considering the importance finding low-cost alternatives overcome inf...