Vertical Changes of Soil Moisture and Water Holding Capacity of Hani Terraces Landscape in Water Conservation Forest Region
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    Abstract:

    Using soil moisture monitor(ThetaProbeML2x) and soil ring sampler methods, we analyzed the soil moisture and water capacity of the main landscape(forest, grassland)soil with a 300 cm depth in the water conservation forest region in the Hani terraces landscape in Yuanyang County, Yunnan Province. The results indicated that:(1) The distribution features of the three soil profile sample plot Ⅰ(forest), sample plot Ⅱ(forest), sample plot Ⅲ(grass) were "double-peak fluctuation" type with turning points at nearby the 60, 140 and 230 cm.(2) The coefficient of variation of sandy soil moisture was higher than clay soil(sample plot Ⅰ, Ⅲ), and the coefficient of variation of forest was higher than grass while both soil samples were clay.(3) The water storage capacity of both sample plot Ⅰ(forest) and on of sample plot Ⅲ(grass) were higher than sample plot Ⅱ(forest), and values were similar, the water storage ability of clay loam was better than that of silty sand soil.(4) Both the max water holding capacity and capillary moisture capacity at the 0-160 cm depth were ordered as: sample plot Ⅰ(forest) higher than sample plot Ⅲ(grass) and higher than sample plot Ⅱ(forest), this indicated the water retention function of sample plot Ⅰ(forest) and sample plot Ⅲ(grass) were higher, however, soil water regulation function of sample plotⅡ(forest) was higher.

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宗路平,角媛梅,华红莲,向东福,何礼平,胡志昕,王大琼.哈尼梯田景观水源林区土壤水分垂直变化与持水性能[J].水土保持通报英文版,2014,(4):59-64

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History
  • Received:March 11,2014
  • Revised:March 25,2014
  • Adopted:
  • Online: April 05,2016
  • Published: