WANG Ling-ling,DAI Quan-hou.Distribution Characteristics of Soil Nutrient in Shahe Small Watershed of Guizhou Weining Caohai[J].Northern Horticulture,2013,37(07):181-184.
贵州威宁草海沙河小流域土壤养分分布特征研究
- Title:
- Distribution Characteristics of Soil Nutrient in Shahe Small Watershed of Guizhou Weining Caohai
- 文章编号:
- 1001-0009(2013)07-0181-04
- Keywords:
- soil nutrient; land use type; small watershed; spatial variation
- 分类号:
- S 155.5(273)
- 文献标志码:
- A
- 摘要:
- 采用全地表网格采样法，贵州威宁草海沙河小流域内不同土地利用类型为单元，研究了沙河小流域土壤养分分布特征及分布规律。结果表明：小流域土壤有机质、有效氮、有效磷、有效钾含量较高，达到了中、高肥力水平；而全氮、全磷、全钾都处于低、很低的肥力水平上。不同土地利用方式下，养分含量也不同。有机质的含量为人工草场>灌丛地>坡耕地>人工疏幼林地>荒草地，有效氮含量变化趋势是人工草场>灌丛地>坡耕地>荒草地>人工疏幼林地，有效磷含量的变化趋势与全磷变化趋势基本相同：坡耕地>人工草场>荒草地>灌丛地>人工疏幼林地，有效钾的分布规律是人工草场>坡耕地>灌丛地>荒草地>人工疏幼林地，全氮与全钾的含量与土地利用类型关系不大。总体上看，人工草场的养分含量最高，人工疏幼林地的养分含量最低。从变异程度上看，所有的养分都属于中等程度的变异。
- Abstract:
- Using full surface grid sampling method,the distribution characteristics of soil nutrient in Shahe small watershed of Guizhou Weining Caohai was carried out.The results showed that organic matter，available N，available P and available K were at a high level；contrary，total N，total P and total K were very poor in the studied area.Different land use type had different soil nutrition content.The variation trend of organic matter content was：artificial grassland>natural shrubland>sloping farmland>planted woodland>wild grassland；the variation trend of available N was：artificial grassland>natural shrubland>sloping farmland>wild grassland>planted woodland；the variation trend of available P was almost the same as the total P：sloping farmland>artificial grassland>wild grassland>natural shrubland>planted woodland；the variation trend of available K was：artificial grassland>sloping farmland>natural shrubland>wild grassland>planted woodland.The research also showed that total N and total K didn’t have much more relationship with land use type.In generally，soil nutrient content was the highest in artificial grassland and the lowest in planted woodland，the variability coefficients showed that all of the nutrients belonged to middle intensity variation.
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备注/Memo
第一作者简介：王玲玲(1987-)，女，吉林长白人，硕士，研究方向为恢复生态学及水土保持与沙漠化防治。E-mail:wanglingling1217@163.com.