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应用生态学报 ›› 2019, Vol. 30 ›› Issue (2): 370-378.doi: 10.13287/j.1001-9332.201902.013

• 土壤物理与生态环境专栏 • 上一篇    下一篇

黄土高原不同生态治理小流域土壤有机质、容重及黏粒含量的对比

黄艳丽1,2,李占斌1,3,4*,苏辉5,王杉杉4,李垚林6,刘晨光1   

  1. (1西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌 712100;
    2河南理工大学测绘与国土信息工程学院, 河南焦作 454000;
    3西安理工大学西北水资源与环境生态教育部重点实验室, 西安 710048;
    4中国科学院水利部水土保持研究所, 陕西杨凌 712100;
    5新乡学院生命科学技术学院, 河南新乡 453003;
    6黄河水利委员会西峰水土保持科学试验站, 甘肃西峰 745000
  • 收稿日期:2018-06-27 修回日期:2018-12-17 出版日期:2019-02-20 发布日期:2019-02-20
  • 通讯作者: E-mail:zhanbinli@126.com
  • 作者简介:黄艳丽,女,1978年生,博士研究生.主要从事生态水文研究.E-mail:hyl@hpu.edu.cn
  • 基金资助:
    本文由国家自然科学基金重点项目(41330858)资助

Comparison of soil organic matter, bulk density and clay content in small watersheds under different ecological managements of Loess Plateau, China.

HUANG Yan-li1,2, LI Zhan-bin1,3,4*, SU Hui5, WANG Shan-shan4, LI Yao-lin6, LIU Chen-guang1   

  1. 1State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, Shaanxi, China;
    2College of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China;
    3Ministry of Education Key Laboratory of Northwest Water Resources and Environment Ecology, Xi’an University of Technology, Xi’an 710048, China;
    4Institute of Soil and Water Conservation, Chinese Acade-my of Sciences and Ministry of Water Resources, Yangling 712100, Shaanxi, China;
    5School of Life Science and Technology, Xinxiang University, Xinxiang 453003, Henan, China;
    6Xifeng Experiment Station of Soil and Water Conservation, Yellow River Conservancy Committee, Xifeng 745000, Gansu, China
  • Received:2018-06-27 Revised:2018-12-17 Online:2019-02-20 Published:2019-02-20
  • Supported by:
    This work was supported by the Key Project of National Natural Science Foundation of China (41330858).

摘要: 为探讨不同生态治理小流域土壤性质的差异,本研究分别从坡向、坡位、区段和土层4个方面分析了人工刺槐林流域杨家沟(YJG)与封禁荒草地流域董庄沟(DZG)土壤有机质(SOM)、土壤容重(BD)和黏粒含量(CC)的空间分异.结果表明: YJG与DZG的SOM、BD、CC分别为12.78 g·kg-1、1.24 g·cm-3、19.2%与11.13 g·kg-1、1.21 g·cm-3、18.2%,前者均略高,但差异不显著.各指标均为东坡大于西坡;SOM和CC顺坡向下有增加趋势,BD变异最小;SOM由上游至下游呈增大趋势,BD和CC不断减小;由土表向下至60 cm土深,BD和CC不断增大,SOM不断减小.各指标的空间敏感性依次为CC>SOM>BD,空间因素的影响效用依次为土层>区段>坡向>坡位.上游CC、中游BD和CC在两流域间的差异显著,各指标对坡位、区段、土层的敏感性均为YJG<DZG.

关键词: 小流域, 土壤有机质, 生态治理, 黏粒含量, 土壤容重

Abstract: To explore the effects of small watersheds with different ecological managements on soil properties, the spatial differences of soil organic matter (SOM), bulk density (BD), and clay content (CC) in the four facets, including slope aspect, slope position, zone, and soil layer, were analyzed between Yangjiagou (YJG, artificial Robinia pseudoacacia forest watershed) and Dongzhuanggou (DZG, closed grassland watershed). The results showed that SOM, BD and CC were 12.78 g·kg-1, 1.24 g·cm-3, 19.2% for YJG and 11.13 g·kg-1, 1.21 g·cm-3, 18.2% for DZG, respectively. The values for YJG were slightly higher than those for DZG, but the difference was insignificant. All indices in the east slope were bigger than those in the west slope. Across different slope positions, the variation of BD was small, SOM and CC showed increasing trends from top to bottom. BD and CC declined downward the watershed, whereas SOM changed in an opposite trend. From the soil surface down to 60 cm soil depth, BD and CC increased and SOM decreased. The spatial sensitivity followed CC > SOM > BD, and the effects of the spatial factors can be ordered as soil layer > zone > slope aspect > slope position. There were significant differences in CC of the upper reaches, BD and CC of the middle reaches between the two basins. The sensitivity of each index to slope position, zone and soil layer in YJG was lower than that in DZG.

Key words: ecological management, small watershed, soil bulk density, clay content, soil organic matter