「褐色森林土壌」及びこれに類縁ある土壌型に関する論議
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概要
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In the preceeding paper the opinions of Dr. W. LAATSCH (Halle) expressed by him in his latest work, Dynamik der deutschen Wald-und Ackerboden (1938) in regard to the "brown forest soils" and allied soil types are interpreted with some critical and explanatory notes. The most important matters to be remarked here are as follows : 1. He designates Ramann's "brown earths" as "brown forest soils" with a very little modification of the original meaning. 2. He rejects the name, "Erubasboden", as unadequate from the evolutional point of view and designates the soils as "immature brown forest soils." 3. He calls the very faintly podsolized varieties "podsolic brown forest soils" and the distinctly podsolized ones "podsolized forest soils" 4. He recognizes the alteration of the "steppe black earths" and "rendzinas" to the "brown forest soils" by degradation. 5. He looks the "rust-stained forest soils" and "brown forest soils" of Prof. H. STREMME as the accidental phases of the "podsolic brown soils" and partly of the "podsolized forest soils" due to the difference of soil texture, the former being sandy and the latter loamy. (The present writer observed another phase in the clayey soils of the western part of Northeast Japan several years ago). LAATSCH'S opinions, above-mentioned, seem to be right for the most part, but the present writer thinks it is unreasonable to incorporate the soils which did not developed under the forest vegetations or whose origins are ambiguous into the group of the "brown forest soils" which are called so from the fact that they are found in the climate of the primitive, deciduous of mixed forests of the Middle Europe. It will surely be better to adopt the term, brown soils instead of the term, "brown forest soils", which is rather complex and liable to be misunderstood, and to use the terms, podsolic brown soils and podsols, instead of the terms, "podsolic brown forest soils" and "podsolized forest soils" respectively.
- 一般社団法人日本土壌肥料学会の論文
- 1938-10-15
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