欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

毛乌素沙地丘间低地主要植物群落土壤酶活性

朱媛君1,张璞进3,牛明丽2,龚德明2,赵利清1,清华2*
  

  1. (1内蒙古大学生命科学学院, 呼和浩特 010021; 2内蒙古大学环境与资源学院, 呼和浩特 010021; 3内蒙古自治区农牧业科学院草业研究中心, 呼和浩特 010030)
  • 出版日期:2016-08-10 发布日期:2016-08-10

Soil enzyme activities of the main plant communities in inter-dune lowland of Mu Us Sandy Land.

ZHU Yuan-jun1, ZHANG Pu-jin3, NIU Ming-li2, GONG De-ming1, ZHAO Li-qing1, QING Hua2*#br#   

  1. (1School of Life Sciences, Inner Mongolia University, Hohhot 010021, China; 2Gollege of Environment and Resources, Inner Mongolia University, Hohhot 010021, China; 3Prataculture Research Center, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010030, China).
  • Online:2016-08-10 Published:2016-08-10

摘要: 为研究毛乌素沙地丘间低地主要植物群落在不同土壤环境下土壤酶活性的变化以及土壤酶活性与土壤理化因子之间的关系,本文对毛乌素沙地丘间低地的6类主要植物群落类型的14种土壤理化因子和4种土壤酶(过氧化氢酶、脲酶、多酚氧化酶、转化酶)活性进行了测定,并对不同植物群落之间土壤酶活性的差异以及土壤酶活性与土壤理化因子间的相关性进行了分析。结果表明:(1)寸草苔群落和碱茅群落的过氧化氢酶活性显著高于北沙柳灌丛和芦苇群落;各群落之间脲酶活性不存在显著性差异;碱茅群落和假苇拂子茅群落的多酚氧化酶活性显著高于其他群落;北沙柳灌丛、芦苇群落和寸草苔群落的转化酶活性显著高于尖被灯心草群落。(2)4个土壤酶活性之间只有转化酶和多酚氧化酶活性呈显著负相关,而其他酶活性之间并不存在显著相关关系。(3)与过氧化氢酶活性显著相关的土壤理化因子有HCO3-、Cl-、K+、Na+、土壤全磷含量以及pH;与脲酶活性显著相关的土壤理化因子有pH;与多酚氧化酶活性显著相关的理化因子有HCO3-、Ca2+、土壤全氮、全碳、有机碳含量以及pH;与转化酶活性显著相关的理化因子有土壤容重和土壤有机碳含量。总之,毛乌素沙地丘间低地主要植物群落的土壤酶活性受到植物群落类型和土壤理化因子的共同影响。

关键词: 交互作用, 水动力特征, 河岸带, 坡面侵蚀, 径流冲刷

Abstract:

In order to explore the change of soil enzyme activities of main plant communities under different soil environments in interdune lowland of Mu Us Sandy Land and their relationship with soil physical and chemical properties, 14 kinds of soil physical and chemical properties and 4 kinds of soil enzyme activities (catalase, urease, polyphenol oxidase, invertase) of 6 main plant communities (Phragmites australis, Juncus turczaninowii, Carex duriuscula, Puccinellia tenuiflora, Calamagrostis pseudophragmites and Salix psammophila) were measured, and their difference and the correlation between soil physical and chemical properties and soil enzyme activities of each plant community were analyzed. The results showed that: (1) Catalase activities of C. duriuscula and P. tenuiflora communities were significantly higher than those of S. psammophila and P. australis communities. There was no significant difference in urease activity among the six plant communities. P. tenuiflora and C. pseudophragmites communities had significantly higher soil polyphenol oxidase activity than other plant communities. Invertase activities of S. psammophila, P. australis and C. duriuscula communities were significantly higher than that of S. psammophila community. (2) There was a significant negative correlation between the activities of polyphenol oxidase and invertase, but no significant correlation between other soil enzyme activities was found. (3) The soil physical and chemical properties, including the content of HCO3-, Cl-, K+, Na+, total P and pH, correlated significantly with hydrogen peroxide enzyme activity. Soil pH showed significant correlation with urease activity. The contents of soil HCO3-, Ca2+, total N, total C, total organic C and soil pH correlated with polyphenol oxidase activity significantly. Additionally, soil bulk density and soil organic C content showed significant correlation with invertase activity. On the whole, the soil enzyme activities of the main plant communities in interdune lowland of Mu Us Sandy Land were influenced by both plant community types and soil physical and chemical properties.
 

Key words: interaction, runoff scouring, hydrodynamic characteristics, slope erosion, riparian zone.