喀斯特石漠化过程中小生境及岩性的演替对土壤有机碳的影响

王兴富; 黄先飞; 胡继伟; 张珍明

doi:10.13870/j.cnki.stbcxb.2020.04.043

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喀斯特石漠化过程中小生境及岩性的演替对土壤有机碳的影响

更新时间：2025-03-12

- 喀斯特石漠化过程中小生境及岩性的演替对土壤有机碳的影响
- Relationship Among Soil Organic Carbon and Small Environment and Lithology in the Rocky Desertification Process in Different Karst Landforms
- 水土保持学报 2020年34卷第4期页码：295-303
- 作者机构：
  
  1. 贵州师范大学喀斯特研究院,贵阳,550001
  2. 贵州师范大学贵州省山地环境信息系统与生态环境保护重点实验室,贵阳,550001
  3. 贵州科学院生物研究所,贵阳,550001
- 作者简介：
  
  [ "王兴富(1990-),男,贵州榕江人,在读博士研究生,主要从事喀斯特环境演变与生态建设研究。E-mail:754957282@qq.com" ]
- 基金信息：
  
  贵州省科学技术项目（黔科合基础[2019]1217）贵州师范大学博士科研基金项目（GZNUD[2017]11号）
- DOI：10.13870/j.cnki.stbcxb.2020.04.043
  中图分类号：
- 纸质出版：2020
- 稿件说明：
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王兴富, 黄先飞, 胡继伟, 等. 喀斯特石漠化过程中小生境及岩性的演替对土壤有机碳的影响[J]. 水土保持学报, 2020,34(4):295-303.

WANG Xingfu, HUANG Xianfei, HU Jiwei, et al. Relationship Among Soil Organic Carbon and Small Environment and Lithology in the Rocky Desertification Process in Different Karst Landforms[J]. 2020, 34(4): 295-303.
王兴富, 黄先飞, 胡继伟, 等. 喀斯特石漠化过程中小生境及岩性的演替对土壤有机碳的影响[J]. 水土保持学报, 2020,34(4):295-303. DOI： 10.13870/j.cnki.stbcxb.2020.04.043.

WANG Xingfu, HUANG Xianfei, HU Jiwei, et al. Relationship Among Soil Organic Carbon and Small Environment and Lithology in the Rocky Desertification Process in Different Karst Landforms[J]. 2020, 34(4): 295-303. DOI： 10.13870/j.cnki.stbcxb.2020.04.043.

摘要

为探讨喀斯特石漠化过程中地表小生境及成土母质岩性的演变对土壤有机碳的影响，以不同喀斯特地貌类型的角度出发，分别从贵州普定、兴义、关岭、荔波及印江县选取对应的喀斯特高原（KG）、峰丛洼地（KF）、峡谷（KX）、原始森林（KY）及槽谷（KC）作为研究区域，分析了0—40 cm土壤层（0—10，10—20，20—30，30—40 cm）及土壤与基岩交界面土层的有机碳含量，分别计算土壤有机碳密度及储量，并分析其空间分布特征及演变规律。结果表明：不同石漠化等级下土壤有机碳含量、密度及储量分别为113.18~163.98 g/kg，1.08~7.32 kg/m2及4.07~24.29 kg，并且呈现出随着石漠化程度的增加而逐渐降低的趋势，同时小生境为石槽以及成土母质岩性为石灰岩及泥灰岩的土壤有机碳含量相对较高。不同喀斯特地貌类型之间土壤有机碳存在较大的差异，在同等的条件下KY及KC土壤有机碳储量相对要高于其他地貌类型。土壤有机碳在喀斯特石漠化演变链上迁移，而小生境及成土岩性的更迭对不同喀斯特地貌类型土壤有机碳在重构空间分布格局具有重要的指示意义。同时喀斯特岩溶地区生态环境复杂多变，要获得评估喀斯特地区土壤有机碳更灵敏的方法，仍需开展进一步研究。

Abstract

In order to investigate the relationship among soil organic carbon and small environment and lithology in different karst landforms that the Karst plateau (KG)

Karts peak-cluster depression (KF)

Karst canyon (KX)

Karst virgin forests (KY) and Karst trough valley (KC) were taken from Puding

Xingyi

Guanling

Libo and Yinjiang in Guizhou province

respectively. The content of soil organic carbon in soil horizons (0-10

10-20

20-30 and 30-40 cm) and organic carbon in the critical surface between bottom soil layer and bedrock were was tested by the method of potassium dichromate

and then counting out the density and storage of Soil organic carbon

the spatial distribution characteristics of soil organic carbon in different karst landforms was analyzed. The results showed that the content

density and storage of soil organic carbon in different rocky desertification class were 113.18~163.98 g/kg

1.08~7.32 kg/m3 and 4.07~24.29 kg

respectively. The soil organic carbon is gradually reduce with the increasing of kasrt rocky desertification degree

and then the soil organic carbon concentration in stone trough is higher than other small environment types

and the content of soil organic carbon in the soil above on Limestone and Marl are more than other Lithology types as well. There is a large discrepancy of soil organic carbon among different karst landforms

in same ecology environment the soil organic carbon storage in KY and KC are more than other landform types. The soil organic carbon move along the evolution chain of Karst rocky desertification process

and the change of Small environment and Lithology in different karst landforms are play an important role in the spatial rebuild of soil organic carbon. The ecology environment of karst mountainous area is complex. If we want to get a more sensitive method to estimate the soil organic carbon in different karst landforms

further studies concerning soil organic carbon among different karst landforms were required.

关键词

Keywords

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