Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2016, Vol. 24 ›› Issue (2): 258-262.DOI: 10.11733/j.issn.1007-0435.2016.02.003

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The Relationship of Soil Particle Fractal Characteristics and Organic Carbon Pool Stability under Different Types of Utilization

GUAN Guang-yu1, FAN Yan-min1, WU Hong-qi1, YAN De-zhi2   

  1. 1. College of Grassland and Environmental Sciences, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China;
    2. College of geographical Sciences, Nantong University, Nantong, Jiangsu Province 226007, China
  • Received:2014-12-11 Revised:2015-04-07 Online:2016-04-15 Published:2016-06-06

不同利用方式土壤颗粒分形特征及其与土壤有机碳库稳定性的关系

管光玉1, 范燕敏1, 武红旗1, 闫德智2   

  1. 1. 新疆农业大学草业与环境科学学院, 新疆 乌鲁木齐 830052;
    2. 南通大学地理科学学院, 江苏 南通 226007
  • 通讯作者: 范燕敏
  • 作者简介:管光玉(1989-),男,浙江瑞安人,硕士研究生,主要从事土壤与植物营养方面研究,E-mail:xjndggy@126.com
  • 基金资助:

    国家自然科学基金项目(41161051);自治区土壤学重点学科基金资助

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Abstract:

The relationships among 0~50 cm soil particle composition, soil fractal characteristics and its soil organic carbon pool activity under different utilization types were studied in the Bayinbuluke alpine grassland. Results showed that the soil in this study area was mostly silt, and the fractal dimension distribution ranged from 2.675 to 2.845, which were closely related with the 0.05 particle size. Under long-term fencing and long-term heavy grazing conditions, the fractal dimension decreased with deepening of soil, and the relationships among particle fractal dimension and carbon pool activity were significantly correlated; however, fractal characteristics changes small under short-term enclosure and moderate grazing conditions, and no significant relationship existed.

Key words: Alpine grassland, Different utilization types, Fractal characteristics, Carbon pool stability

摘要：

本文研究了不同利用方式下巴音布鲁克高寒草原0~50 cm土层土壤颗粒组成及其分形特征与土壤有机碳库活度的关系。结果表明:该区土壤颗粒以粉粒为主,分形维数分布在2.675~2.845之间,与0.05 mm粒径关系密切。长期封育和重度放牧分形维数随土层加深而降低,且与碳库活度显著相关;短期封育和中度放牧分形维数变化小,与碳库活度无显著相关性。

关键词: 高寒草原, 不同利用方式, 分形特征, 碳库稳定性

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