Spatial Variability of Soil Moisture in Different Models of Rehabilitated Forest in Degraded Red Soil Region

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Spatial Variability of Soil Moisture in Different Models of Rehabilitated Forest in Degraded Red Soil Region

更新时间：2024-11-07

- Spatial Variability of Soil Moisture in Different Models of Rehabilitated Forest in Degraded Red Soil Region
- Issue 5, Pages: 101-105(2007)
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- Published：2007
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Spatial Variability of Soil Moisture in Different Models of Rehabilitated Forest in Degraded Red Soil Region[J]. 2007, (5): 101-105.
DOI：

Spatial Variability of Soil Moisture in Different Models of Rehabilitated Forest in Degraded Red Soil Region[J]. 2007, (5): 101-105. DOI：

摘要

采用地统计学的方法

研究了江西泰和退化红壤区不同模式重建森林在高温干旱季节土壤水分空间变异规律及其分布格局。结果表明

在该研究尺度下

湿地松纯林、枫香纯林、湿地松与枫香混交林0~20 cm

20~40cm土层含水量分布都符合正态分布

都可较好地拟合成球状模型

表现出明显的空间相关性和空间分布格局。3种重建模式样地0~20 cm

20~40 cm层土壤含水量变异函数的基台值、变程都较无林荒地明显增大

而且基台值和变程在0~20 cm

20~40 cm两土层间的差异明显大于无林荒地

说明植被恢复以后

土壤水分的空间分布特征明显改变

空间变异性增强

空间变异的程度和尺度都明显增大

土壤水分的空间变异也具有较为明显的层次性。与纯林相比

湿地松×枫香混交林土壤水分的空间变异程度较低

水分分布趋于均匀化。

Abstract

In this paper geostatistical theory and methods are used to study the spatial variability and the spatial distributing characters of soil moisture of different models of rehabilitated forest in dry season in Taihe county

Jiangxi province.The results showed that the soil moisture in 0~20 cm and 20~40 cm soil layers of grassland

Pinus elliottii plantation

Liquidambar formosana plantation and the forest mixed Liquidambar formosana with Pinus elliottii could be expressed by spherical model

and the soil moisture showed medium or strong spatial correlation and obvious spatial distributing patterns.The sills and ranges of semivariogram of three models of rehabilitated forest were obviously larger than that of grassland

and the differences between the two layers are also larger than that of grassland

which showed that variation extent

and the ranges of soil moisture are larger after rehabilitation

and spatial variability changed with layers.Compared with pure forests

soil moisture of the model mixed with Liquidambar formosana with Pinus elliottii had lower spatial variability

and the distribution of soil moisture tended to become homogeneous.

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