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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (18): 60-66.doi: 10.11924/j.issn.1000-6850.casb19030028

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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

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

CLC Number: