|本期目录/Table of Contents|

[1]李婷婷,聂富育,杨万勤,等.四川盆地西缘4种人工林土壤活性氮季节动态[J].应用与环境生物学报,2018,24(04):744-750.[doi:10.19675/j.cnki.1006-687x.2017.11037]
 LI Tingting,NIE Fuyu,et al.Seasonal dynamics of labile soil nitrogen from four plantations at the western edge of the Sichuan Basin[J].Chinese Journal of Applied & Environmental Biology,2018,24(04):744-750.[doi:10.19675/j.cnki.1006-687x.2017.11037]
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四川盆地西缘4种人工林土壤活性氮季节动态()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年04期
页码:
744-750
栏目:
研究论文
出版日期:
2018-08-20

文章信息/Info

Title:
Seasonal dynamics of labile soil nitrogen from four plantations at the western edge of the Sichuan Basin
作者:
李婷婷聂富育杨万勤杨开军贺若阳庄丽燕李志杰徐振锋
1四川农业大学生态林业研究所,四川省林业生态工程重点实验室 成都 611130 2四川农业大学华西雨屏区生态环境监测站,长江上游生态安全协同创新中心 成都 611130
Author(s):
LI Tingting1 2 NIE Fuyu1 YANG Wanqin1 2 YANG Kaijun1 HE Ruoyang1 ZHUANG Liyan1 LI Zhijie1 & XU Zhenfeng1 2**
1 Key Laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forest, Sichuan Agricultural University, Chengdu 611130, China 2 Monitoring Station for Eco-environments in the Rainy Zone of Southwest China, Collaborative Innovation Center of Ecological Security in the Upper Reaches of Yangtze River, Chengdu 611130, China
关键词:
土壤铵态氮硝态氮微生物生物量氮季节动态
Keywords:
soil ammonium nitrate microbial biomass nitrogen seasonal dynamic
分类号:
S714.8
DOI:
10.19675/j.cnki.1006-687x.2017.11037
摘要:
于2015年3月、6月、9月和12月采集四川盆地西缘都江堰灵岩山4种人工林(柳杉Cryptomeria fortunei、含笑Michelia wilsonii、桢楠Phoebe zhennan、麻栎Quercus acutissima)2个土层(0-20 cm和20-40 cm)的土壤样品,比较分析土壤铵态氮、硝态氮和微生物生物量氮,并同步监测环境因子季节动态. 结果显示:4种人工林土壤无机氮均以硝态氮为主;各土壤活性氮组分都呈现出显著季节动态,土壤铵态氮含量在生长季(6月和9月)高于非生长季(3月和12月),而硝态氮、微生物生物量氮和无机氮呈相反的季节模式(生长季低于非生长季);0-20 cm土层活性氮组分总体高于20-40 cm土层,土壤活性氮受林型显著影响,且与季节和土层密切相关;活性氮组分之间及活性氮组分与土壤温度、水分及月降水量总体上显著相关. 综上所述,土壤的活性氮季节变化远大于林型及土层之间的变异,相比林木的生物作用,环境因子对土壤活性氮的驱动作用更为强烈. (图4 表2 参36)
Abstract:
The objective of this study was to investigate the soil nitrogen components of four native artificial plantations at the western edge of the Sichuan Basin. Soil samples from two layers (0-20 cm and 20-40 cm) were collected from 4 plantations (Cryptomeria fortunei, Michelia wilsonii, Phoebe zhennan, and Quercus acutissima) during March, June, September, and December 2015 at the western edge of Sichuan Basin, to perform a comparative analysis on seasonal dynamics. Soil ammonium, nitrate, microbial biomass nitrogen, and environmental factors were synchronously monitored. The results showed that soil inorganic nitrogen was mainly the result of nitrate. The components of labile soil nitrogen showed significant seasonal dynamics. Soil ammonium during the growing season (June and September) was higher than that during the non-growing season (March and December), but soil nitrate, microbial biomass nitrogen, and inorganic nitrogen showed the opposite pattern. Labile nitrogen components in the 0-20 cm layer were generally higher than those in the 20-40 cm layer. Labile soil nitrogen was significantly affected by forest type, which was dependent on season and soil layer. In general, there were significant correlations between the soil nitrogen pools and labile soil nitrogen and the environmental factors, including soil temperature, water content, and monthly rainfall. In conclusion, the variation of labile soil nitrogen was influenced more by season than forest type or soil layer. Compared to the biological effects of tree species, the environmental factors had a stronger effect on labile soil nitrogen.

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更新日期/Last Update: 2018-08-25