Effect of Subsurface Drainage Combined with Biochar on the Bacterial Community Composition of Coastal Saline Soil

文献类型： 外文期刊

第一作者： Tian, Yuyu

作者： Tian, Yuyu;Li, Dongwei;Wang, Yuting;Zhao, Qingqing;Li, Zongpeng;Jing, Rui;Zhou, Xinguo;Tian, Yuyu;Wang, Yuting;Zhao, Qingqing;Li, Zongpeng;Jing, Rui

作者机构：

关键词： subsurface drainage; biochar; waterlogging; composition of soil bacterial community; soil enzyme activity

期刊名称：WATER （ 影响因子：3.4； 五年影响因子：3.5 ）

ISSN：

年卷期： 2023 年 15 卷 15 期

页码：

收录情况： SCI

摘要： Waterlogging and salinization are considered to be the main threats to agricultural productivity and land resources in coastal areas of China. Thus far, drainage and field soil improvement programs have been ineffective. In this article, we investigated the effect of subsurface drainage combined with biochar (B-S) on soil physicochemical properties and soil bacterial community structure in coastal saline soil. In this study, B-S significantly reduced soil electrical conductivity (EC) and soil water content (W) by 35% and 10.65% compared to no drainage (CK). Compared to CK and drainage alone (S), B-S significantly increased soil total nitrogen (TN) by 24.78% and 39.62%, soil available phosphorus (AP) by 28.29% and 69.82%, soil nitrate (NO3--N) by 64.65% and 35.45%, and significantly increased soil organic matter (SOM) by 74.69% and 66.10%, respectively. It also significantly increased alkaline phosphatase (ALP) and urease activities. The results of redundancy analysis (RDA) showed that CAT and urease made the greatest response to changes in environmental factors, indicating that CAT is more sensitive to changes in environmental alterations than ALP. AP was the dominant factor in the change in enzyme activity (R-2 = 53.0%, p < 0.05), followed by NO3--N (R-2 = 14.8%). SOM was the dominant factor in the variation in microbial abundance content (R-2 = 38.5%, p < 0.05), followed by ALP (R-2 = 20.0%, p < 0.05). The results of the study can provide guidance for effective land use and sustainable development of agricultural soil ecology in coastal areas.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序