Study on Spatial Variability of Soil Organic Carbon in Pailugou Catchment of Qilian Mountains

LU Qian; LI Yi; LIU Xiande; ZHAO Weijun

doi:10.13870/j.cnki.stbcxb.2020.05.033

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Study on Spatial Variability of Soil Organic Carbon in Pailugou Catchment of Qilian Mountains

更新时间：2025-03-12

- Study on Spatial Variability of Soil Organic Carbon in Pailugou Catchment of Qilian Mountains
- Vol. 34, Issue 5, Pages: 238-243(2020)
- 作者机构：
  
  1. 甘肃农业大学林学院,兰州,730070
  2. 甘肃省祁连山水源涵养林研究院,甘肃,张掖,734000
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2020.05.033
  CLC： S153.6
- Published：2020
- 稿件说明：
移动端阅览
LU Qian, LI Yi, LIU Xiande, et al. Study on Spatial Variability of Soil Organic Carbon in Pailugou Catchment of Qilian Mountains[J]. 2020, 34(5): 238-243.
DOI：

LU Qian, LI Yi, LIU Xiande, et al. Study on Spatial Variability of Soil Organic Carbon in Pailugou Catchment of Qilian Mountains[J]. 2020, 34(5): 238-243. DOI： 10.13870/j.cnki.stbcxb.2020.05.033.

摘要

为研究小流域尺度下土壤有机碳的变异规律，运用地统计学方法对研究区0—10，10—20，20—40 cm土壤有机碳含量的空间变异性进行了研究。结果表明：流域内不同土层有机碳含量属于中等强度变异，具有强烈的空间自相关性；土壤有机碳含量在0，135°方向上空间变异程度明显，空间分布的各向异性显著；克里格插值结果显示流域内阴坡土壤有机碳含量明显高于阳坡，高海拔区域土壤有机碳含量高于低海拔区域；不同土层间，土壤有机碳含量均表现为青海云杉 > 灌丛 > 草地，表明不同植被类型对土壤有机碳含量和分布有着重要影响。土壤有机碳含量的空间变异性特征，与土壤性质、地形因子等结构性因素有关，为研究祁连山小流域土壤信息差异性的测量和描述提供科学依据。

Abstract

In order to study the variation of soil organic carbon in small watershed scale

the spatial variability of soil organic carbon contents in 0-10

10-20

20-40 cm was studied by geostatistical method. The results showed that the organic carbon contents in different soil layers in the watershed had a moderate intensity variation with strong spatial autocorrelation. The spatial variation of soil organic carbon content was obvious in the directions of 0 and 135°

and the spatial distribution was anisotropic. The results of Kriging interpolation showed that the contents of soil organic carbon in the shady slope were significantly higher than those in the sunny slope

and the contents of soil organic carbon in the high altitude area were higher than those in the low altitude area. Among the different soil layers

the contents of soil organic carbon were represented by Picea crassifolia > shrub > grassland

indicating that the different vegetation types had an important influence on the content and distribution of soil organic carbon. The spatial variability of soil organic carbon content was related to structural factors such as soil properties and topography factors

which provided a scientific basis for the measurement and description of soil information differences in the small watershed of Qilian Mountain.

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