QIU Li-ping,ZHANG Xing-chang.Vegetation Types Effects on Soil Properties in Small Watershed of the Loess Plateau[J].Research of Soil and Water Conservation,2010,17(03):64-68.
黄土高原沟壑区小流域不同植被覆被对土壤性质的影响
- Title:
- Vegetation Types Effects on Soil Properties in Small Watershed of the Loess Plateau
- Keywords:
- the Loess Plateau; re-vegetation; soil properties; soil quality
- 分类号:
- S153;X171.1
- 摘要:
- 为揭示不同植被覆盖对土壤性质的影响，运用野外调查和室内分析的方法对南小河沟流域不同植被覆盖土壤13种基本性质及土壤质量进行研究，结果发现：草地土壤物理结构在三种植被恢复土壤中为最佳。不同植被恢复土壤养分含量在剖面中均具有不等的表聚性，土壤有机质、全氮、矿质氮、速效钾和CEC在剖面中均表现为随土层加深而降低，pH随土层加深而增加，而全磷则无太大规律。在相同土层，不同植被恢复土壤表现不一。51 a的油松林地0-105 cm土层土壤质量均有明显提高，51 a的刺槐林地0-45 cm土层土壤质量有所改善，而45-105 cm土层土壤质量则有所退化。
- Abstract:
- Re-vegetation in the Loess Plateau poses great significance on eco-environmental rehabilitation and exerts important influences on soil properties and soil quality, which is essential for maintaining and improving for the ecosystem functions in the re-vegetation systems. In this study, field investigation and laboratory analysis were combined to reveal the changes of soil properties and subsequently soil quality in various vegetation coverage conditions in the loessial gully region of the Loess Plateau. The results showed that the optimal soil physical properties were occurred in grassland. In the studied vegetation types, most nutrients and soil properties were all decreased with soil depth apart from pH and total P. Additionally, soil properties varied greatly with vegetations. After 51 years, Chinese pine improved soil quality in 0-105 cm soil depths, while black locust improved soil quality in 0-45 cm. Soils in 45-105 cm were degraded after 51 years’ growth of black locust.
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备注/Memo
收稿日期:2009-12-18。
基金项目:国家自然基金（40901145）；西部之光博士资助项目（B28013400）；国家科技支撑计划（2006BAD09B06）
作者简介:邱莉萍（1979- ），女，江西赣州人，博士，主要从事土壤质量评价的研究。E-mail：qiulp79@tom.com