Variability of soil moisture and its relationship with environmental factors on Karst hillslope

被引：0
|
作者：
Zhang J. [1 ,2 ]
Chen H. [2 ,3 ]
Su Y. [2 ,3 ]
Liang H. [1 ]
Kong X. [4 ]
Zhang W. [2 ,3 ]
机构：
[1] Key Laboratory of Tobacco Quality Control, Ministry of Agriculture, Tobacco Research Institute, Chinese Academy of Agricultural Sciences
[2] Key Laboratory for Agro-Ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Acad. of Sci.
[3] Huanjiang Experimental Station of Karst Ecosystem, Chinese Acad. of Sci.
[4] College of Life Science and Resource Environment, Yichun University
来源：
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2010年 / 26卷 / 09期
关键词：
Detrended canonical correspondence analysis (DCCA); Hillslope; Karst region; Land use; Soil moisture; Soils; Variability; Vegetation;
D O I：
10.3969/j.issn.1002-6819.2010.09.014
中图分类号：
学科分类号：
摘要：
The aim of the experiment is exploring the influence of environmental factors, such as different land uses, topography and microgeomorphology, on the variability of soil moisture on Karst hillslope. The method of detrended canonical correspondence analysis (DCCA) was used to analyze surface soil moisture (0-15 cm) variability and its relationship with environmental factors on a typical hillslope in Karst region. The results showed that surface soil moisture ranged from 21.36% to 32.58% during the whole sampling periods, and had seasonal changes with middle variability. Soil moisture in different land uses had similar changes with time accompanied with four peak types. Soil moisture was the highest in natural vegetation field, followed in abandoned field and sloping field, and the lowest was in artificial forest. The DCCA ordination analysis indicated that soil depth, soil organic carbon, land use and bare rock ratio had the biggest effects on soil moisture variability and seasonal pattern on the hillslope. Soil density and slope had the less effects, and vertical position and height had the least effects. The sampling spacing and density of soil moisture should be increased, and aspect, curvature, upslope contributing area should also be considered in further studies according to the special physiognomy of Karst hillslope. Furthermore, these results suggested that combined with the soil nutrient characteristics of different land use on the hillslope, some feasible agricultural engineering measures and vegetation restoration modes should be developed on the degraded ecosystems on Karst hillslope in the future.
引用
下载
收藏
页码：87 / 93
页数：6
相关论文
共 25 条
  • [1] Famiglietti J.S., Rudnicki J.W., Rodell M., Variability in surface moisture content along a hillslope transect: Rattlesnake Hill, Texas, Journal of Hydrology, 210, 1-4, pp. 259-281, (1998)
  • [2] Yue Y., Wang K., Zhang W., Et al., Relationships between soil and environment in peak cluster depression areas of Karst region based on canonical correspondence analysis, Environmental Science, 29, 5, pp. 1400-1405, (2008)
  • [3] Ren W., Xie S., Xie D., Changes of soil moisture ecoeffects during process of typical ecosystem restoration in Karst mountain, Journal of Soil and Water Conservation, 23, 5, pp. 128-132, (2009)
  • [4] Zhang J., Chen H., Su Y., Et al., Spatial variability of soil moisture on hillslope in clusterpeak depression areas in Karst region, Transactions of the CSAE, 22, 8, pp. 54-58, (2006)
  • [5] Fu W., Chen H., Wang K., Variability in soil moisture under five land use types in Karst hillslope territory, Chinese Journal of Eco-Agriculture, 15, 5, pp. 59-62, (2007)
  • [6] Zhang X., Wang K., Zhang W., Et al., Effect of land use on soil moisture on hillslope in Karst peak-cluster depression areas of Northwest Guangxi, Chinese Journal of Soil Science, 40, 6, pp. 1250-1254, (2009)
  • [7] Qiu Y., Fu B., Wang J., Et al., Quantitative analysis of relationships between spatial and temporal variation of soil moisture content and environmental factors at a gully catchment of the Loess Plateau, Acta Ecologica Sinica, 20, 5, pp. 741-747, (2000)
  • [8] Qiu Y., Fu B., Wang J., Et al., Spatial heterogeneity of soil moisture content on the Loess Plateau, China and its relation to influencing factors, Chinese Journal of Applied Ecology, 12, 5, pp. 715-720, (2001)
  • [9] Penna D., Borga M., Norbiato D., Et al., Hillslope scale soil moisture variability in a steep alpine terrain, Journal of Hydrology, 364, 3-4, pp. 311-327, (2009)
  • [10] Wang J., Fu B., Qiu Y., Et al., Spatial and temporal relationships between land use and soil moisture in hilly area of the Loess Plateau, Journal of Natural Resources, 16, 6, pp. 521-524, (2001)
123