Recovery approach affects soil quality in the water level fluctuation zone of the Three Gorges Reservoir, China: implications for revegetation
Recovery approach affects soil quality in the water level fluctuation zone of the Three Gorges Reservoir, China: implications for revegetation
复制标题
恢复方法对中国三峡水库水位波动区土壤质量的影响：对植被恢复的影响
DOI：
10.1007/s11356-013-2128-5
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发表时间：
2014-02
期刊：
影响因子：
--
通讯作者：
Q Zhang
中科院分区：
文献类型：
--
作者：
Ye C;Q Zhang
三峡库区水位消落区因冬季洪涝和长时间淹水，植被消失。近年来，促进了恢复和保护河岸生态系统的植被重建(种植和自然恢复)。植被重建可能会影响土壤质量，并对生态服务和土壤恢复具有广泛而重要的影响。对三峡库区人工林和自然恢复条件下的土壤pH值、容重、土壤有机质、土壤养分和重金属、土壤微生物群落结构、微生物生物量和土壤质量指数进行了研究。大多数土壤性质在人工林和自然恢复区都表现出显著的时间和空间差异。人工区土壤有机质和硝态氮含量较高，自然恢复区土壤pH值、容重和全钾含量较高。然而，两种恢复方式在植物丰富度和多样性以及土壤微生物群落结构方面没有显著差异。土壤质量指数由土壤有机质、容重、锌、镉和汞组成，表明草本植物盖度越大的自然恢复区土壤恢复能力越强。
Plants in the water level fluctuation zone of the Three Gorges Reservoir Region disappeared due to winter-flooding and prolonged inundation. Revegetation (plantation and natural recovery) have been promoted to restore and protect the riparian ecosystem in recent years. Revegetation may affect soil qualities and have broad important implications both for ecological services and soil recovery. In this study, we investigated soil properties including soil pH values, bulk density, soil organic matter (SOM), soil nutrients and heavy metals, soil microbial community structure, microbial biomass, and soil quality index under plantation and natural recovery in the Three Gorges Reservoir Region. Most soil properties showed significant temporal and spatial variations in both the plantation and natural recovery areas. Higher contents of SOM and NO3-N were found in plantation area, while higher contents of soil pH values, bulk density, and total potassium were observed in the natural recovery area. However, there were no significant differences in plant richness and diversity and soil microbial community structure between the two restoration approaches. A soil quality index derived from SOM, bulk density, Zn, Cd, and Hg indicated that natural recovery areas with larger herbaceous coverage had more effective capacity for soil restoration.
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