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中国农学通报 ›› 2023, Vol. 39 ›› Issue (21): 103-108.doi: 10.11924/j.issn.1000-6850.casb2022-0672

• 资源·环境·生态·土壤 • 上一篇    下一篇

烟台市典型县域土壤pH时空变化特征及影响因素

李煜婧1(), 夏紫祎1, 申桐2, 王斐2, 郑磊3, 周建利1, 张强3(), 孙楠4(), 徐明岗2,4   

  1. 1 长江大学农学院,湖北荆州 434025
    2 山西农业大学资源环境学院,山西太谷 030800
    3 金正大生态工程集团股份有限公司,山东临沭 276700
    4 中国农业科学院农业资源与农业区划研究所/农业农村部耕地质量监测与评价重点实验室,北京 100081
  • 收稿日期:2022-08-05 修回日期:2022-10-14 出版日期:2023-07-25 发布日期:2023-07-24
  • 通讯作者: 张强,男,1979年出生,山东东营人,高级农艺师,博士,主要从事新型肥料创制与土壤改良研究。通信地址:276700 山东省临沭县兴大西街19号 金正大生态工程集团股份有限公司,Tel:0539-6378876,E-mail:zhangqiang@kingenta.com。孙楠,女,1975年出生,内蒙古呼和浩特人,研究员,博士,主要从事土壤培肥与改良研究。通信地址:100081 北京市海淀区中关村南大街12号 中国农业科学院农业资源与农业区划研究所,Tel:010-82105062,E-mail:sunnan@caas.cn
  • 作者简介:

    李煜婧,女,2001年出生,新疆博乐人,在读本科生,主要从事土壤环境化学方面的研究。通信地址:434025 湖北省荆州市荆州区荆秘路88号 长江大学农学院,E-mail:

  • 基金资助:
    泰山产业领军人才工程项目“土壤酸化综合防治与地力提升关键技术产业化开发与应用”(LJNY201818)

Spatiotemporal Characteristics of Soil pH in Typical Counties of Yantai City and Influencing Factors

LI Yujing1(), XIA Ziyi1, SHEN Tong2, WANG Fei2, ZHENG Lei3, ZHOU Jianli1, ZHANG Qiang3(), SUN Nan4(), XU Minggang2,4   

  1. 1 College of Agriculture, Yangtze University, Jingzhou, Hubei 434025
    2 College of Resources and Environment, Shanxi Agricultural University, Taigu, Shanxi 030800
    3 Kingenta Ecological Engineering Group Co. Ltd, Linshu, Shandong 276700
    4 Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/ Key Laboratory of Cultivated Land Quality Detection and Evaluation, Ministry of Agriculture and Rural Affairs, Beijing 100081
  • Received:2022-08-05 Revised:2022-10-14 Online:2023-07-25 Published:2023-07-24

摘要:

研究烟台市典型县域耕地土壤pH变化及其影响因素,为耕地质量提升提供科学依据。以栖霞市和蓬莱区为研究对象,2010年用网格法采集耕层土壤样品,分析土壤pH、交换性钙、交换性镁等基本性质,与第二次土壤普查(1984年)数据进行对比分析,采用地统计学法分析不同类型土壤pH的时空演变特征并比较不同级别土壤pH的变化情况。结果表明:1984—2010年25年来,烟台市土壤pH呈下降趋势,褐土和潮土pH下降幅度均约10%,棕壤约6%。随时间推移,烟台市土壤pH块金效应升高,空间自相关性减弱,受到随机因素影响的程度增大。烟台市北部及东部边缘等地土壤pH较高,酸化不明显;西南部地区土壤pH较低,酸化严重。与1984年相比,2010年pH≤6.00的耕地占比由5.8%增加至48.8%;pH>6.00的耕地占比则由94.2%下降至51.2%。栖霞市土壤交换性钙、镁含量随pH升高先上升后下降;蓬莱区土壤交换性钙、镁含量与pH呈显著正相关。烟台市耕地土壤呈现酸化的趋势,气候和施肥等是影响该区域耕地土壤酸化的主要因素。

关键词: 烟台市, 土壤酸化, 土壤类型, 地统计学, 时空变化特征

Abstract:

This paper explored the characteristics of soil pH change and its influencing factors in arable land of typical counties in Yantai City and provided a scientific basis for arable land quality improvement. The soil samples of cultivated layer were collected in 2010 by grid sampling method from Qixia City and Penglai District as the research objects. Soil properties, including soil pH, exchangeable calcium and exchangeable magnesium were analyzed and compared with data of the second land survey in 1984. The pH spatiotemporal characteristics of different soil types were analyzed by geostatistics, changes in pH at different soil levels were compared. The results indicated that the soil pH in Yantai City showed a downward trend during 25 years (1984 to 2010). The declining degrees of pH were about 10% for cinnamon and fluvo-aquic soils and 6% for brown soil, respectively. The nugget effect of soil pH increased over time and the spatial autocorrelation of soil pH gradually decreased, and soil pH was greatly affected by random factors. Soil pH values in the northern and eastern edge of Yantai were high, and the acidification was not obvious. In contrast, soil pH values were low in southwest of Yantai where had severe acidification. The proportion of arable land with pH≤6.00 increased significantly from 5.8% in 1984 to 48.8% in 2010, while the proportion of arable land with pH>6.00 decreased significantly from 94.2% in 1984 to 51.2% in 2010. Both exchangeable calcium and exchangeable magnesium in Qixia City increased first and then decreased with the increase of pH, while both exchangeable calcium and exchangeable magnesium in Penglai City were positively correlated with pH. The cultivated land soil presented acidizing trend in Yantai. Climate and fertilization are the main factors affecting arable soil acidification in this region.

Key words: Yantai City, soil acidification, soil type, geostatistics, spatiotemporal characteristics