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

ZONG Lu-ping; JIAO Yuan-mei; HUA Hong-lan; XIANG Dong-fu; HE Li-ping; HU Zhi-xin; WANG Da-qiong

doi:10.13961/j.cnki.stbctb.2014.04.025

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

- Vertical Changes of Soil Moisture and Water Holding Capacity of Hani Terraces Landscape in Water Conservation Forest Region
- Bulletin of Soiland Water Conservation Vol. 33, Issue 4, Pages: 59-64(2014)
- 作者机构：
  
  云南师范大学旅游与地理科学学院,云南,昆明,650500
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.04.025
  CLC：
- Published：2014
- 稿件说明：
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ZONG Lu-ping, JIAO Yuan-mei, HUA Hong-lan, et al. Vertical Changes of Soil Moisture and Water Holding Capacity of Hani Terraces Landscape in Water Conservation Forest Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 59-64.
DOI：

ZONG Lu-ping, JIAO Yuan-mei, HUA Hong-lan, et al. Vertical Changes of Soil Moisture and Water Holding Capacity of Hani Terraces Landscape in Water Conservation Forest Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 59-64. DOI： 10.13961/j.cnki.stbctb.2014.04.025.

摘要

采用ThetaProbeML2x土壤水分测定仪和环刀取样法对哈尼梯田景观水源林区主要植被类型(林地和草地)下0-300 cm土层的土壤水分特征及其持水性能进行了研究。研究结果表明:(1) 各样地[样地Ⅰ(林地)

样地Ⅱ(林地)

样地Ⅲ(草地)]土壤水分垂直分布为"双峰"波动型

样地Ⅰ和Ⅲ波动弱

样地Ⅱ波动剧烈

拐点出现在60

140和230 cm土层附近

土壤水分运动趋势在拐点处受邻层土壤含水量影响大;(2) 粉沙性质地土壤(样地Ⅱ)水分变异系数高于黏性质地土壤(样地Ⅰ

Ⅲ);林地土壤水分变异系数大于草地土壤;(3) 样地Ⅰ土壤和草地Ⅲ土壤蓄水量均较样地Ⅱ高

且其值相近

黏性壤土的蓄水能力优于粉沙性土壤;(4) 水源林区0-160 cm土层最大持水量和毛管持水量由大到小均表现为:样地Ⅰ > 样地Ⅲ > 样地Ⅱ;非毛管持水量由大到小表现为:样地Ⅱ > 样地Ⅰ > 样地Ⅲ

样地Ⅰ和样地Ⅲ的土壤水源涵蓄能力较强

样地Ⅱ土壤调节水分能力较强。

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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