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https://www.selleckchem.com/products/l-arginine-l-glutamate.html The spatial distribution patterns of the nine heavy metals are significantly different. Pb, Zn, and Co present an obvious zonal distribution pattern, while Cr, Cu, Ni, V, Cd, and Hg present a point-like distribution pattern. Moreover, the correlation analysis between heavy metal content and physicochemical properties of different soils showed that the correlation between heavy metal content and physicochemical properties of latosolic red soil was the most significant. Stepwise regression analysis was used to elucidate the relationship between heavy metal content in latosolic red soil, and physicochemical properties were quantified. The physicochemical properties affecting heavy metal content in latosolic red soil were found to be mechanical composition, pH, organic matter, and cation exchange capacity.In this study, we hypothesized that the distribution patterns of trace metal elements in montane regions would be controlled by the local climate, human activities, vegetation distribution and soil development. Hence, we selected nine forest sites among the elevation of 850 m to 2650 m on the windward (western slope) and leeward (eastern slope) slopes of Ailao Mountain in Yunnan Province of China to determine the typical heavy metal concentrations in forest surface soils, and their differences for distribution trends along with the increasing elevations, and the corresponding environmental factors. The results showed that surface soil Cd, Sb, As, Cr, and Pb had relatively higher concentrations and distinct enrichment factors both on eastern and western slopes. Specifically, the concentrations of Cd and Sb in surface soils of the eastern and western slopes and Pb on the western slope all had obvious altitude distribution trends, which showed their concentrations increased with the increasing elevation. In addition, we found the concentrations of Cd, Sb, As, and Cr in surface soils of the western slope were

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