小卷发
发表于 2025-3-25 07:01:47
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天文台
发表于 2025-3-25 09:21:13
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立即
发表于 2025-3-25 12:09:58
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Nibble
发表于 2025-3-25 17:32:27
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处理
发表于 2025-3-25 23:33:12
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西瓜
发表于 2025-3-26 00:10:34
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dissent
发表于 2025-3-26 08:22:51
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变形词
发表于 2025-3-26 11:37:21
,Universitätsgründung anno 1229,ere retained mainly in the E-horizon. The output of total N from the E-horizon was only 5 % of the total N deposition in the forest stand during the study period and it was mainly as organic N. The output of inorganic N forms from under B-horizon was seasonal and occurred mainly at spring snowmelt.
通便
发表于 2025-3-26 14:21:44
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Allege
发表于 2025-3-26 18:24:01
Evidence of Current Soil Acidification in Spruce Stands in the Vosges Mountains, North-Eastern Franlow levels of Mg in the ecosystem, may explain this discrepancy. Since 1987, a general decrease of the (Ca. Mg.)/Al. ratio in soil solution was observed at both sites. These results are consistent with present day acidification of soils poor in weatherable minerals under spruce stands in the Vosges Mountains.