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皆伐油松林不同恢复措施下团聚体与球囊霉素分布特征
Authors
史君怡
周昊翔
+4 more
景航
梁楚涛
王国梁
薛萐
Publication date
1 January 2017
Publisher
Abstract
以未扰动油松林为对照,研究了油松林皆伐后在不同措施下恢复为幼林地、灌木地和撂荒地0~20cm土层团聚体稳定性、团聚体中 球囊霉素相关土壤蛋白(GRSP)和有机碳(SOC)含量变化特征.结果表明:与对照相比,幼林地团聚体稳定性显著降低(P<0.05),而灌木地及撂 荒地团聚体稳定性显著增加.不同恢复措施团聚体中易提取球囊霉素相关土壤蛋白(EE-GRSP)分布的变化趋势与团聚体稳定性一致,灌木 地团聚体中EE-GRSP 含量相比对照显著增加且最大.灌木地和撂荒地大团聚体(>250μm)中总量球囊霉素相关土壤蛋白(T-GRSP)含量相 比对照显著增加而撂荒地粉黏粒团聚体(<53μm)中T-GRSP含量显著减小.粉黏粒团聚体中EE-GRSP含量普遍大于其他粒径团聚体;微团 聚体(53~250μm)中T-GRSP 含量普遍大于其他粒径团聚体.相比于其他粒径团聚体,大团聚体中T-GRSP 可以更准确的反映土壤碳库的变 化,团聚体稳定性更依赖于大团聚GRSP.</p
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 20/05/2019