包气带反硝化强度空间分布规律的整合分析

耿宏志; 郇环; 李鸣晓; 张莹; 张军军; 席北斗

doi:10.16030/j.cnki.issn.1000-3665.2018.03.20

包气带反硝化强度空间分布规律的整合分析

基金项目:

国家自然科学基金项目（41602260）；中央高校基本科研业务费专项基金（ZY20170312）；北京市自然科学基金（8164066）

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出版历程
- 收稿日期: 2017-07-21
- 修回日期: 2017-09-28

包气带反硝化强度空间分布规律的整合分析

GENGHongzhi,

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摘要

摘要:
依据1970~2017年间发表的3955篇包气带反硝化强度相关论文,筛选出197组反硝化强度数据,利用整合分析,重点研究了包气带反硝化强度在典型生态类型（水平）和不同采样深度（垂向）的空间分布规律,识别了包气带反硝化强度的主控因素并研究其函数关系。结果表明：水平空间上,包气带表层0~0.5 m反硝化强度的分布特征显著,由大到小排序为：森林（8.03±0.21 mg/（kg·d））、农田（3.54±0.08 mg/（kg·d））、草地（3.38±0.12 mg/（kg·d））、湿地（2.32±0.23 mg/（kg·d））、沙漠（2.15±0.56 mg/（kg·d））。垂向空间上（6 m内）,各生态类型反硝化强度随深度的增加均呈“S”型变化规律。不同生态类型和不同采样深度下包气带反硝化强度的主控因素存在一定差异,主要为黏粒、有机质、全氮、硝态氮、有效磷,并给出了包气带反硝化强度与主控因素的回归方程。
- 包气带 /
- 反硝化强度 /
- 生态类型 /
- 采样深度 /
- 整合分析
Abstract:
依据1970~2017年间发表的3955篇包气带反硝化强度相关论文,筛选出197组反硝化强度数据,利用整合分析,重点研究了包气带反硝化强度在典型生态类型（水平）和不同采样深度（垂向）的空间分布规律,识别了包气带反硝化强度的主控因素并研究其函数关系。结果表明：水平空间上,包气带表层0~0.5 m反硝化强度的分布特征显著,由大到小排序为：森林（8.03±0.21 mg/（kg·d））、农田（3.54±0.08 mg/（kg·d））、草地（3.38±0.12 mg/（kg·d））、湿地（2.32±0.23 mg/（kg·d））、沙漠（2.15±0.56 mg/（kg·d））。垂向空间上（6 m内）,各生态类型反硝化强度随深度的增加均呈“S”型变化规律。不同生态类型和不同采样深度下包气带反硝化强度的主控因素存在一定差异,主要为黏粒、有机质、全氮、硝态氮、有效磷,并给出了包气带反硝化强度与主控因素的回归方程。
- vadose zone /
- denitrification intensity /
- ecological type /
- sampling depth /
- meta-analysis

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