水土保持学报2012，Vol.26Issue(1)：190-194,199,6.
退化花岗岩植被恢复对团聚体及其有机碳的影响
Soil Water-Stable Aggregates and Organic Carbon Affected by Forestland Restoration of Degraded Granite
摘要
Abstract
In this paper,the distribution of soil water-stable aggregates（WSA） and its organic carbon contents in different forestland restoration were studied.Results showed that forestland resoration increased the content of WSA 0.25 mm and mean weight diameter（MWD） in 0-20 cm,and 20-40 cm soil layers,and enhanced the soil water stability significantly.In the 0-20 cm layer of erosion forestland＇s soil,the contents of WSA and organic carbon reduced as the increasing of soil particle size.On the contrary,the contents of WSA and organic carbon increased with the increasing of soil particle size in restore forestland soils,and organic carbon enriched in aggregates fractions over 2 mm.There were significant（P0.05） differences among soil erosion,restored forest and the secondary forest.In the 20-40 cm layer soil,the content of WSA and its organic carbon were similar to the surface layer in the secondary forest and Acacia mearnsii planting recovery soils,other newly recovery forestland＇s WSA and its organic carbon mostly appeared in aggregate fractions of 5～2 mm and 1～0.5 mm.The content of WSA was enriched in the surface layer,and mostly depended on the recovery time and the restoration measures.关键词
水稳性团聚体/土壤有机碳/退化红壤Key words
water-stable aggregate/soil organic carbon/degraded red soils分类
农业科技引用本文复制引用
蓝良就,张野,黄炎和,李德成,林金石,彭绍云..退化花岗岩植被恢复对团聚体及其有机碳的影响[J].水土保持学报,2012,26(1):190-194,199,6.基金项目
国家“十一五”科技支撑计划项目 （）
