干旱区研究 ›› 2022, Vol. 39 ›› Issue (4): 1282-1292.doi: 10.13866/j.azr.2022.04.28

• 农业生态 • 上一篇    下一篇

锡尔河流域哈萨克斯坦境内农田土壤粒度特征及空间异质性

贺静1,2(),吉力力·阿不都外力2,3,4(),马龙2,3,4   

  1. 1.新疆大学资源与环境科学学院,新疆 乌鲁木齐 830046
    2.中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室,新疆 乌鲁木齐 830011
    3.中国科学院中亚生态与环境研究中心,新疆 乌鲁木齐 830011
    4.中国科学院大学,北京 100049
    5.哈萨克斯坦土壤与农业化学研究所,哈萨克斯坦 阿拉木图 050060
    6.哈萨克斯坦国立大学地理与环境科学学院,哈萨克斯坦 阿拉木图 050040
  • 收稿日期:2021-10-18 修回日期:2021-12-06 出版日期:2022-07-15 发布日期:2022-09-26
  • 通讯作者: 吉力力·阿不都外力
  • 作者简介:贺静(1992-),女,硕士研究生,主要从事干旱区湖泊资源与环境研究. E-mail: 1130062311@qq.com
  • 基金资助:
    新疆维吾尔自治区区域协同创新专项(上海合作组织科技伙伴计划及国际科技合作计划)(2020E01013);国家自然科学基金(42171014)

Grain size characteristics and spatial heterogeneity of farmland soils in the Syr Darya River Basin of Kazakhstan

HE Jing1,2(),Jilili ABUDUWAILI2,3,4(),MA Long2,3,4,Galymzhan SAPAROV3,5,Gulnura ISSANOVA3,6   

  1. 1. College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, Xinjiang, China
    2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
    3. Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
    4. University of Chinese Academy of Sciences, Beijing 100049, China
    5. Kazakh Research Institute of Soil Science and Agrochemistry Named after U. U. Uspanov, Almaty 050060, Kazakhstan
    6. Faculty of Geography and Environmental Sciences, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
  • Received:2021-10-18 Revised:2021-12-06 Online:2022-07-15 Published:2022-09-26
  • Contact: ABUDUWAILI Jilili

摘要:

以锡尔河流域哈萨克斯坦境内农田土壤为研究对象,结合经典统计学和地统计学方法,开展了0~20 cm土层土壤粒度特征及空间异质性研究。结果表明:(1) 各子研究区内不同粒径土壤颗粒的分布特征较为相似,均以0.25~0.05 mm和0.05~0.01 mm粒径颗粒的平均含量占比最高,除子区3中粒径为1.0~0.25 mm土壤颗粒含量具有较强的变异性,其他各粒径土壤颗粒含量都具有中等程度变异性;(2) 子区1中除粒径为1.0~0.05 mm土壤颗粒以外,其他粒径土壤颗粒含量的块金系数均<40%,子区2各粒径土壤颗粒含量块金系数均<50%,子区3除粒径<0.001 mm土壤颗粒以外,其他粒径土壤颗粒含量的块金系数均<40%,表明各研究区内土壤颗粒组成已经受到不同程度随机性因素的影响;(3) 利用克里金插值方法对研究区不同粒径土壤颗粒含量进行空间插值,插值结果表明研究区内不同粒径土壤颗粒含量在空间分布上表现出不同的分布特征。研究结果可为农田土壤的合理利用以及退化土壤改良提供科学依据。

关键词: 锡尔河流域, 土壤粒度, 空间异质性, 半方差函数

Abstract:

This article takes the farmland soils in the Syr Darya River Basin of Kazakhstan as the research object, combining classical statistics and geostatistics methods, and investigates the characteristics of soil grain size and spatial heterogeneity in the 0-20 cm soil layer. Results showed that the distribution characteristics of soil particles with different particle sizes in each study area were similar, and the average content of particles with particle sizes of 0.25-0.05 mm and 0.05-0.01 mm is the highest. Except for subzone 3, the content of soil particles with a particle size of 1.0-0.25 mm has strong variability, while that of other sizes has a moderate degree of variability; Except for soil particles with a particle size of 1.0-0.05 mm in subzone 1, the nugget coefficient of soil particle content of other particle sizes is all < 40%, and that of each particle size in subzone 2 is all < 50%, in subzone 3, except for soil particles with a particle size of < 0.001 mm, the nugget coefficient of soil particle content of other particle sizes is < 40%. These findings revealed that the composition of soil particles in each study area has been affected by varying degrees of random factors; The Kriging interpolation method was used to interpolate the content of soil particles of different sizes in the study area. The interpolation results showed that the content of soil particles of different sizes in the study area demonstrated different distribution characteristics in the spatial distribution. The research results can provide a scientific basis for the rational use of farmland soil and the improvement of degraded soil.

Key words: Syr Darya River Basin, soil grain size, spatial heterogeneity, semi-variogram