[1]ZHANG Xiaoyan,LI Qinshu.Effects of Land Use Types on Soil Erosion and Soil Nutrient Losses in Purple Soil[J].Research of Soil and Water Conservation,2018,25(05):12-17.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 05
Page number:
12-17
Column:
Public date:
2018-09-06
- Title:
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Effects of Land Use Types on Soil Erosion and Soil Nutrient Losses in Purple Soil
- Author(s):
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ZHANG Xiaoyan1, LI Qinshu2
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1. Yunnan College of Business Managent, Kunming 650106, China;
2. Faculty of Environmental Sciences and Engineering, Kunming University of Science and Technology, Kunming 650093, China
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- Keywords:
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land use type; soil erosion; soil nutrients loss
- CLC:
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S157.1
- DOI:
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- Abstract:
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Characteristics of soil nutrient losses under different land use types in purple soil during course of rainfall were studied. The results indicated that:(1) the surface runoff under different land use types had a logarithmic change tendency with the duration of rainfall, which followed the order:farmland > orchard > grassland > shrub land > woodland; (2) the increasing range of soil erosion of grassland was larger, and farmland, woodland, orchard was lower, which decreased in the order:farmland > orchard > grassland > shrubland > woodland; (3) the surface runoff and interflow of orchard and farmland were significant higher than those in the woodland and shrub land (p < 0.05), which decreased in the order:farmland > orchard > grassland > shrubland > woodland; (4) the sediment accumulation under different land use types had a exponential function change tendency with the increase of rainfall; (5) the nitrogen and phosphorus losses along with runoff, nitrogen and phosphorus losses along with sediment and the total losses of nitrogen and phosphorus decreased in the order:farmland > orchard > grassland > shrubland > woodland; (6) the total contents of nitrogen and phosphorus under different land use types decreased in the order:farmland > orchard > grassland > shrubland > woodland before rainfall; contents of nitrogen and phosphorus in the sediment was higher, indicating that erosion and sediment had the enrichment effect of nitrogen and phosphorus, and the nitrogen enrichment was higher than phosphorus enrichment, the nutrient enrichment is the highest in the grassland.