Fractal Characteristics of Soil Particle Size on Different Vegetation Types in the Source Area of the Heihe River

doi:10.11733/j.issn.1007-0435.2024.05.016

Acta Agrestia Sinica ›› 2024, Vol. 32 ›› Issue (5): 1459-1470.DOI: 10.11733/j.issn.1007-0435.2024.05.016

Fractal Characteristics of Soil Particle Size on Different Vegetation Types in the Source Area of the Heihe River

DIAO Er-long^1,2, CAO Guang-chao^2,3, LIU Ying⁴, ZHAO Qing-lin^1,2, CAO Sheng-kui^1,2, YUAN Jie^1,2, HAN Guang-zhao^1,2, ZHANG Fu-ling^1,5

1. Qinghai Provincial Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining, Qinghai Province 810008, China;
2. Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation (Ministry of Education), Qinghai Normal University, Xining, Qinghai Province 810008, China;
3. Academy of Plateau Science and Sustainability, People’s Government of Qinghai Province and Beijing Normal University, Xining, Qinghai Province 810008, China;
4. Qinghai Agriculture and Animal Husbandry Engineering Consulting Corporation, Xining, Qinghai Province 810008, China;
5. Provincial Natural Resources Remote Sensing Center of Qinghai Province, Xining, Qinghai Province 810008, China

Received:2023-08-20 Revised:2023-11-21 Published:2024-06-01

黑河源区不同植被类型土壤粒径分形特征研究

刁二龙^1,2, 曹广超^2,3, 刘英⁴, 赵青林^1,2, 曹生奎^1,2, 袁杰^1,2, 汉光昭^1,2, 张富玲^1,5

1. 青海师范大学, 地理科学学院, 青海省自然地理与环境过程重点实验室, 青海西宁 810008;
2. 青海师范大学, 青藏高原地表过程与生态保育教育部重点实验室, 青海西宁 810008;
3. 青海省人民政府-北京师范大学高原科学与可持续发展研究院, 青海西宁 810008;
4. 青海农牧业工程咨询有限公司, 青海西宁 810008;
5. 青海省自然资源遥感中心, 青海西宁 810008

通讯作者: 曹广超，E-mail:Caoguangchao@qhnu.edu.cn
作者简介:刁二龙(1991-)，男，汉族，山西大同人，博士研究生，主要从事环境地表过程与生态响应研究，E-mail：1530875132@qq.com
基金资助:
青海省科技厅自然科学项目(2023-ZJ-907M)；青海省创新平台建设专项(2020-ZJ-Y06)；祁连山国家公园青海研究中心开放课题(GKQ2019-1) 资助

Abstract

Abstract: Taking the source area of the Heihe River as the research area,the fractal theory was applied to study the fractal characteristics of soil particles under three main vegetation types. The relationship was analyzed between soil particle fractals and environmental factors. The results showed that the forestland had the lowest sand content (22.76%),followed by shrubland (26.11%),and the sand content of grassland was the highest (38.83%). The order of soil single fractal dimension (D) was grassland (2.60) 0),information dimension (D₁),and association dimension (D₂) and soil particle sizes was opposite to D. In addition,topography,vegetation cover and soil physicochemical factors affected the soil fractal dimension of the three vegetation types in different degrees. In conclusion,there are apparent differences in soil fractal characteristics among different vegetation types,and the fractal dimension is mainly affected by soil grain size,while other factors affect the fractal dimension by influencing the composition of soil particles. The results of this study provide a reference for the scientific management and rational use of the land resources in the source area of the Heihe River.

Key words: Heihe River source area, Soil particle size, Fractal dimension, Vegetation type

摘要： 本研究以黑河源区为研究区，运用分形理论研究了该区域3种主要植被类型土壤粒径分形特征，并分析了土壤粒径分形与环境因子的关系。结果表明：草地砂粒含量最大(38.83%)，灌木林地次之(26.11%)，乔木林地砂粒含量最低(22.76%)，土壤单重分形维数(Single fractal dimension，D)大小表现为草地(2.60)<灌木林地(2.64)<乔木林地(2.65)；乔木林地、灌木林地和草地的土壤粒径均呈非均匀性分布，与乔木林地和灌木林地相比，草地的土壤粒径分布非均匀性最高；D与土壤粘粒、粉粒含量呈极显著正相关关系，与砂粒含量呈极显著负相关关系，而容量维(D₀)，信息维(D₁)，关联维(D₂)与土壤各粒级含量的关系与D相反。此外，地形、植被盖度和土壤理化因子对3种植被类型土壤分形维数产生不同程度的影响。综上，不同植被类型土壤粒径分形特征差异明显，分形维数主要受土壤粒径影响，其它因子通过影响土壤颗粒组成从而对分形维数产生影响。研究结果可为黑河源区土地资源的科学管理和合理利用提供参考。

关键词: 黑河源区, 土壤粒径, 分形维数, 植被类型

CLC Number:

S152

DIAO Er-long, CAO Guang-chao, LIU Ying, ZHAO Qing-lin, CAO Sheng-kui, YUAN Jie, HAN Guang-zhao, ZHANG Fu-ling. Fractal Characteristics of Soil Particle Size on Different Vegetation Types in the Source Area of the Heihe River[J]. Acta Agrestia Sinica, 2024, 32(5): 1459-1470.

刁二龙, 曹广超, 刘英, 赵青林, 曹生奎, 袁杰, 汉光昭, 张富玲. 黑河源区不同植被类型土壤粒径分形特征研究[J]. 草地学报, 2024, 32(5): 1459-1470.

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Fractal Characteristics of Soil Particle Size on Different Vegetation Types in the Source Area of the Heihe River

黑河源区不同植被类型土壤粒径分形特征研究

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