|本期目录/Table of Contents|

[1]刘君洋,王明力,赵来朋,等.干旱区胡杨肥岛对土壤生态化学计量的影响[J].江苏农业科学,2020,48(20):282-287.
 Liu Junyang,et al.‘Fertile island’ effects of Populus euphratica Oliv. on soil ecological stoichiometry in arid area[J].Jiangsu Agricultural Sciences,2020,48(20):282-287.
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干旱区胡杨肥岛对土壤生态化学计量的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第48卷
期数:
2020年第20期
页码:
282-287
栏目:
资源与环境
出版日期:
2020-10-20

文章信息/Info

Title:
‘Fertile island’ effects of Populus euphratica Oliv. on soil ecological stoichiometry in arid area
作者:
刘君洋1王明力2赵来朋1葛翔宇1杨建军1
1.新疆大学资源与环境科学学院/教育部绿洲生态重点实验室,新疆乌鲁木齐 830046; 2.核工业二一六大队,新疆乌鲁木齐 830011
Author(s):
Liu Junyanget al
关键词:
生态化学计量肥岛胡杨艾比湖流域
Keywords:
-
分类号:
S718.5
DOI:
-
文献标志码:
A
摘要:
综合分析艾比湖流域胡杨冠下土壤有机碳(SOC)、全氮(TN)、全磷(TP)分布及生态化学计量特征,对土壤SOC、TN、TP含量及C/N、N/P、C/P的水平和垂直变化进行单因素方差分析,用最小显著性差(LSD)对数据进行多重比较。结果表明,从肥岛外至冠幅中央,随着距离的增加肥岛效应不断增强,SOC、TN含量显著增加(P<0.05),0~5、5~10、10~15 cm这3个土层深度下SOC和TN含量分别增加85%、83%、83%和87%、75%、78%,而TP含量变化不显著;随着深度的增加,TN、SOC和TP含量都表现出减小的趋势,0~5 cm的TN、SOC含量显著大于10~15 cm(P<005),各土层深度下TP差异均不显著;从肥岛外至冠幅中央随着肥岛效应不断增强,0~5、5~10、10~15 cm这3个土层的N/P和C/P显著增加(P<0.05),分别增加83%、66%、74%和80%、77%、80%,而C/N变化不明显;随着深度的增加,N/P和C/P都呈减小趋势,0~5 cm的N/P显著大于10~15 cm(P<0.05)。说明胡杨冠下土壤C、N变化显著,空间异质性强,表现出明显的肥岛效应,但P变化不显著;N/P和C/P受肥岛效应显著影响,随着肥岛效应的增强明显增加,而C/P几乎不受影响;胡杨冠下肥岛的P素有效性较高,有机质矿化分解速率较快,同时表现出较为严重的N素限制。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2019-11-18
基金项目:国家自然科学基金(编号:51269030)。
作者简介:刘君洋(1994—),男,四川宜宾人,硕士,主要研究方向为水土保持与荒漠化治理。E-mail:ljylhl123@sina.com。
通信作者:杨建军,博士,副教授,主要从事干旱区水土保持与荒漠化防治研究。E-mail:yjjdfly@sina.com。
更新日期/Last Update: 2020-11-09