In the long-term field provenance experiment at the Pogorelskoye Field Experiment Station of the Sukachev’s Institute of Forest in the Krasnoyarsk region (Russia) we studied a range of  chemical properties of a grey wooded soil under 15 various larch (Larix sibirica L.) climatypes, namely Motyginsky, Ono-Chuna, Jidginsky, Irkutsk, Shira, Katun 490, Manna, Kaa-Khem (781, 778-1 and 778-2), Son, Tashtyp, Vikherevka, Chemal 528, Petrovsk-Zabaikalsky.

Soil was sampled from the 0-20 cm layer at the 60sm radii from the tree. Six individual soil monoliths were bulked together to produce one thoroughly mixed sample. Soil organic matter C and N were determined by wet digestion, pH and labile nutrients contents were measured by standardized agrochemical techniques. On average the studied soil did not differ from other soils of the same type in soil organic matter and total N content, as well as C/N ratio, but had rather high levels of labile and extractable p and exchangeable K. Soil elemental composition  (К,Ca, Ti, V, Cr, Mn, Fe, Zn, Cu, Co, Ni, Pb, Sr, Ga, As, Br, Ru, Y, Zr, Nb, Mo) was measured by X-ray fluorescence analysis with synchrotron radiation. Microbial biomass C, N and P contents were estimated by fumigation-extraction method.

The obtained data were analyzed by principal components extraction, and the structure of relationship between various climatypes analyzed visually by their location on the plane of the first two principal components, together accounting for 43% of the total original data variance. There were differences between larch climatypes both along the 1^st (Chemal – Motyginsky, Katun 490, Vikherevka) and 2^nd (Shira, Kaa-Khem 778-2, Manna, Motyginsky on the positive pole, and Son, Katn 490, Vikherevka on the negative one) principal components. The soil sample from under Chemal climatype was located further aside from all the other samples, mostly due to nitrate N content and total ash.

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