Lands of industrial regions are often subjected to long-term contamination with heavy metals such as cadmium, zinc, lead, copper etc. Heavy metals circulate mostly due to water flows, and in the areas with humid (micro) climate, the heavy metal pollution propagates from sources with increased intensity because of acidic environment and soil water logging. We established that natural or artificial drainage effectively increases the washout of heavy metal pollutants due to subsurface and groundwater flows.
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Library ResourceConference Papers & ReportsDecember, 2017Russia, Latvia
Library ResourceConference Papers & ReportsDecember, 2017Kazakhstan, Latvia
The agricultural lands have a special legal regime and are subject to the protection aimed at limiting the seizure of these lands, preserving and increasing their fertility. The area of lands of this category in the structure of land Fund accounts for 100.8 million hа, or 38.6% of used land. Their share in the land Fund of the regions ranges from 70-75% (North-Kazakhstan, Akmola region) to 10-20% (Kyzylorda, Atyrau region). It is mainly related to different climatic conditions and vast areas of desert and semi-desert rangelands.
Library ResourceConference Papers & ReportsDecember, 2010Latvia
Both forestry theory and practice have proved that amelioration favours the growth of forest stands significantly. The growing stock increases even 10 times, if the amelioration system is well-functioning. Joint Stock Company Latvia State Forests that is managing half of forests in Latvia has started renovation of old amelioration systems aiming to improve the productivity of state owned forests in Latvia. In order to evaluate the impact of the renovation of the old amelioration systems, a tree ring width in 7 pine stands, 5 spruce stands and 3 birch stands was analysed.