[1]HE Xiao-rong,HE Bing-hui,QIN Wei,et al.Analysis of Soil Nutrient Characteristics in Disturbed Surface and Different Slope Positions[J].Research of Soil and Water Conservation,2014,21(02):17-21,26.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 02
Page number:
17-21,26
Column:
Public date:
2014-04-28
- Title:
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Analysis of Soil Nutrient Characteristics in Disturbed Surface and Different Slope Positions
- Author(s):
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HE Xiao-rong1, HE Bing-hui1, QIN Wei2, ZUO Chang-qing2
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1. College of Resources and Environment, Southwest University;Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Chongqing 400715, China;
2. Department of Sediment Research, China Institute of Water Resources and Hydropower Research, Beijing 100048, China
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- Keywords:
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disturbed surface; runoff plots; soil nutrient; slope position
- CLC:
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S153.6;S158.2
- DOI:
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- Abstract:
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Through experiments in runoff plots, this paper studied the soil nutrient characteristics in slope with 20 m long under disturbed surface and different slope positions. The results showed that the soil nutrient contents of upper and lower slope in disturbed surface plots were lower than the natural plots under the same slope position. In upper slope position, for all soil nutrients, there were very significant difference between the two kinds of plots(P < 0.01). In lower slope position, in addition to the organic matter, the other soil nutrient contents also had the very significant difference between the two kinds of plots(P < 0.01). In middle slope position, the contents of total nitrogen, organic matter and total phosphorus in disturbed surface plots were significantly higher than those in the natural plots; the contents of other soil nutrients in disturbed surface plots were also very significantly lower than those in the natural plots(P < 0.01). But judged from the all runoff plots, the contents of soil nutrients in the natural plots were significantly higher than disturbed surface plots. The nutrient contents of different slope positions, for disturbed surface plots, the contents of nitrogen, potassium and organic matter followed the sequence of lower slope > middle slope > upper slope; the content of phosphorus was in the order of middle slope > lower slope > upper slope. For the natural plots, the contents of nitrogen, potassium and organic matter followed the sequence of lower slope > upper slope > middle slope; the content of phosphorus indicated lower slope > middle slope > upper slope.