| 郑桂莲,张月莹,强方方,李宗伦,盛昌昌.北京平原地区不同土地利用类型对土壤颗粒组成及其分形特征的影响[J].林业调查规划,2024,49(1):172-177 |
| 北京平原地区不同土地利用类型对土壤颗粒组成及其分形特征的影响 |
| Effects of Different Land Use Types on Soil Particle Distribution and Fractal Dimension in Plain Afforestation Area of Beijing |
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| DOI： |
| 中文关键词: 土地利用类型 土壤颗粒 分形维数 体积分数 |
| 英文关键词: land use type soil particle size fractal dimension volume fraction |
| 基金项目:北京市平原造林工程绿化废弃物资源化利用研究与示范（LC-6-01）. |
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| 中文摘要: |
| 选取农田、撂荒草地、人工乔木林、人工灌木林和次生林5种不同土地利用类型土壤颗粒为研究对象，采用Microtrac S3500激光粒度仪测定土壤样品粒径，利用土壤分形学理论和方法，分析不同土地利用类型对土壤颗粒组成及其分形特征的影响。结果表明，土壤粒径在不同土地利用方式下存在显著差异，其中撂荒草地以砂粒为主，农田、人工乔木林、人工灌木林和次生林以粉粒为主；次生林、人工乔木林黏粒体积分数最大，且显著大于其他土地利用类型，撂荒草地最小；次生林、人工乔木林、人工灌木林粉粒体积分数最大，且显著大于农田与撂荒草地；砂粒体积分数则与粉粒相反。土壤分形维数的大小依次为撂荒草地＜农田＜人工灌木林＜次生林＜人工乔木林；土壤分形维数与土壤黏粒含量、粉粒含量均呈显著正相关，与土壤砂粒含量呈显著负相关。 |
| 英文摘要: |
| In order to study the effects of different land use types on soil particle composition, the soil particles of five different land use types were selected, including farmland, abandoned grassland, artificial arbor forest, artificial shrub forest and secondary forest. The particle size of soil samples was measured by Microtrac S3500 laser particle sizer, and fractal characteristics were analyzed by using soil fractal theory and method. The results revealed that there were significant differences in soil particle size among different land use types, in which abandoned grassland was dominated by sand, while farmland, artificial arbor forest, artificial shrub forest and secondary forest was dominated by silt; the clay volume fraction of secondary forest and artificial arbor forest was the highest, which was significantly higher than that of other land use types, and the abandoned grassland was the lowest; the silt volume fraction of secondary forest, artificial arbor forest and artificial shrub forest was the highest, which was significantly higher than that of farmland and abandoned grassland; the sand volume fraction was opposite to the silt volume fraction; the order of soil fractal dimension from high to low was abandoned grassland |
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