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中国农学通报 ›› 2020, Vol. 36 ›› Issue (18): 60-66.doi: 10.11924/j.issn.1000-6850.casb19030028

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

绍兴水网平原水耕人为土的发育与发生学性状的协同变化特点

章明奎   

  1. 浙江大学环境与资源学院,杭州 310058
  • 收稿日期:2019-03-08 修回日期:2019-09-20 出版日期:2020-06-25 发布日期:2020-07-10
  • 作者简介:章明奎,男,1964年出生,浙江绍兴人,教授,博士,主要从事土壤资源调查与分类方面的研究。通信地址:310058 浙江省杭州市西湖区余杭塘路866号 浙江大学环境与资源学院,Tel:0571-86946076,E-mail: mkzhang@zju.edu.cn。
  • 基金资助:
    国家自然科学基金面上项目“水耕人为土诊断层/诊断特性的空间分布规律与田间识别模式研究”(41571207)

Stagnic Anthrosols in Shaoxing Water-network Plain: Development and Synergistic Variation of Genetic Characteristics

Zhang Mingkui   

  1. College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058
  • Received:2019-03-08 Revised:2019-09-20 Online:2020-06-25 Published:2020-07-10

摘要:

为了解水网平原水耕人为土发生学性状的空间变异规律,选择浙江省绍兴平原作为研究区,调查与采样分析了水网平原区不同类别水耕人为土诊断层、诊断特性等发生学性状的空间分异规律和不同发生学性状之间的关联及其与成土环境的关系。结果表明,研究区检出的水耕人为土类型主要属潜育水耕人为土、铁聚水耕人为土和简育水耕人为土,以底潜简育水耕人为土的分布最为集中。底潜简育水耕人为土和普通潜育水耕人为土在水网平原区内多呈复区分布。研究区内土壤众多发生学性状均存在一定的空间变异,其中以氧化还原层结构面上斑纹、灰色胶膜数量和氧化铁活化度及耕作层的彩度变异较大,而水耕表层厚度、犁底层与耕层容重比、表土有机质含量的变化相对较小。在水耕人为土演变过程中主要发生学性状存在协同变化的特性,并主要受冬季地下水位和粘粒含量的影响。由潜育水耕人为土向简育水耕人为土、铁聚水耕人为土的演化是研究区土壤演化的主要方向。

关键词: 水耕人为土, 发生, 诊断层, 诊断特征, 协同变化

Abstract:

To understand the spatial variability of genetic characteristics of the stagnic anthrosols in water-network plain, by selecting Shaoxing plain of Zhejiang as the study area, the author investigated the spatial variability of the genetic characteristics, such as diagnostic horizon and diagnostic characteristics of different kinds of stagnic anthrosols in the plain, and the correlations between various genetic characteristics and the soil-forming environments. The results showed that: gleyi-, Fe-accumuli-, and hapli- stagnic anthrosols were the main types of the stagnic anthrosols in the study area, and the distribution of endogleyic hapli- stagnic anthrosols was the most concentrated in the area; in the water-network plain, endogleyic hapli-stagnic anthrosols and typic gleyi-stagnic anthrosols mostly distributed as interlaced zones; all soil genetic characteristics in the study area varied in different degrees; among them, the variations of the numbers of spots and gray film on structure surface of the hydragric horizon, the activation degree of iron oxide in the hydragric horizon, and the color of the anthrostagnic epipedon were greater, while those of the thickness of the anthrostagnic epipedon, bulk density ratio of plow pan to plow layer, and the organic matter content of the topsoil were relatively smaller. In the course of the evolution of the stagnic anthrosols in the area, there were synergistic changes in the main genetic characteristics, which were mainly affected by the winter groundwater level and clay content. The main direction of soil evolution of the stagnic anthrosols is transformed from gleyi-stagnic anthrosols to hapli-, and Fe-accumuli-stagnic anthrosols.

Key words: stagnic anthrosols, formation, diagnostic horizon, diagnostic characteristics, synergistic change

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