|本期目录/Table of Contents|

[1]贾昌梅,牛显春,张冬梅,等.广州市农田生态系统土壤养分和微生物量的分布特征[J].江苏农业科学,2016,44(07):446-451.
 Jia Changmei,et al.Distribution characteristics of soil nutrient and soil microbial biomass of farmland ecosystem in Guangzhou City[J].Jiangsu Agricultural Sciences,2016,44(07):446-451.
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广州市农田生态系统土壤养分和微生物量的分布特征(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第44卷
期数:
2016年07期
页码:
446-451
栏目:
资源与环境
出版日期:
2016-07-25

文章信息/Info

Title:
Distribution characteristics of soil nutrient and soil microbial biomass of farmland ecosystem in Guangzhou City
作者:
贾昌梅 牛显春 张冬梅 陈梅芹
广东石油化工学院环境与生物工程学院,广东茂名 525000
Author(s):
Jia Changmeiet al
关键词:
广州市农田生态系统土壤养分土壤微生物量分布特征
Keywords:
-
分类号:
S154.3;S606+.1
DOI:
-
文献标志码:
A
摘要:
通过野外调查与室内分析,研究广州市农田生态系统土壤养分和微生物量及其垂直分布特征。结果表明,广州市土壤有机碳含量、全氮含量、全钾含量基本呈现出一致性规律,依次表现为花都区>黄浦区、白云区>天河区,全磷含量在4个地区没有显著差异;通过变异系数分析可知,广州市微生物量具有高度的空间变异性,而土壤全磷含量的变异系数最低,由此可知土壤微生物量是可以表征土壤肥力的敏感因子;线性回归分析可知,广州市土壤养分之间均具有良好的线性正相关性(P<0.01);广州市土壤微生物量碳、微生物量氮基本呈现出一致性规律,依次表现为花都区>黄浦区、白云区>天河区;土壤微生物活度的变化范围在0.41~0.69,依次表现为花都区>黄浦区>白云区>天河区;广州市土壤微生物量碳周转率高于氮周转率,说明微生物量碳更新比微生物量氮快;广州市土壤养分含量、微生物量随土层深度的增加呈下降趋势,表现出上肥下瘦的特点,均以0~10 cm土层(表层)最高,呈现出明显的“表聚性”,20~30 cm土层基本相等,也即广州市农田生态系统土壤养分和微生物量差异表现在土壤表层,在深层并没有明显的差异。相关性分析可知,广州市土壤有机碳与全氮呈极显著线性正相关(P<0.01),土壤养分和土壤微生物量均呈现出一定的相关性。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2016-01-02
基金项目:广东省科技计划(编号:2012B031000024、2012B010500028);广东省本科高校教育改革建设项目(编号:650260,286);广东省本科高校质量工程建设项目(编号:650244);广东省高等教育教学改革综合类项目(编号:GDJG20141219)。
作者简介:贾昌梅(1963—),女,江西南昌人,教授,工程师,研究方向为环境污染和环境工程。E-mail:JIA_Changmei@163.com。
更新日期/Last Update: 2016-07-25