干旱区生态环境知识资源中心(Arid): 马衔山不同海拔土壤碳、氮、磷含量及生态化学计量特征

Arid

	马衔山不同海拔土壤碳、氮、磷含量及生态化学计量特征
其他题名	Elevational distribution of soil organic carbon,nitrogen and phosphorus contents and their ecological stoichiometry on Maxian Mountain
	李新星; 刘桂民; 吴小丽; 纪庚好; 李莉莎; 毛楠; 徐海燕; 吴晓东
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2020
卷号	39 期号:3 页码:758-765
中文摘要	研究半干旱地区土壤碳、氮、磷化学计量特征,了解其空间变化规律,有助于揭示半干旱地区C、N、P循环对全球气候变化的响应。本研究以半干旱区的马衔山为对象,选择5个海拔的7个样地,采集0~15、15~30 cm层的土壤,测定其有机碳(SOC) 、全氮(TN) 、全磷(TP) 、pH、含水率等理化性质,分析其SOC、TN、TP化学计量与土壤理化因子之间的关系。结果表明:(1) 0~15 cm土壤SOC、TN、TP含量高于15 ~ 30 cm土壤。表层土壤SOC、 TN含量随海拔升高呈增加趋势,TP含量随海拔升高变化较小。(2) C : N随海拔增加呈先增加后降低趋势,C : P、N : P随海拔升高均呈增加趋势。(3)在0 ~ 15 cm土壤中,pH与SOC、TN含量及C : P呈显著负相关,在15 ~ 30 cm土层中,pH与SOC、TN、TP含量及化学计量特征关系不显著;土壤含水率与0 ~ 15、15 ~ 30 cm层土壤中SOC、TN含量均呈极显著正相关。本研究显示,在半干旱区的马衔山地区,土壤含水率随海拔增加而增加,而SOC、 TN含量及C : P、N : P也呈增加趋势,土壤养分含量及化学计量均受土壤含水率影响。
英文摘要	The stoichiometric characteristics and spatial patterns of soil organic carbon(SOC),total nitrogen(TN) and total phosphorus(TP) are useful indicators for understanding their responses to global climate change in semi-arid areas. In this study,we collected 0-15 cm and 15-30 cm soil samples from seven plots at five altitudes in Maxian Mountain,which is located in the semi-arid area,to determine the physicochemical properties of SOC,TN,TP,pH and soil moisture content. The relationships among soil SOC,TN,TP stoichiometry and soil physical and chemical factors were examined. The results showed that:(1) The contents of SOC,TN,TP in the 0-15 cm soil layer were higher than those in 15-30 cm layer. The SOC and TN contents in the top soils increased with elevation,while the TP content did not change.(2) The C : N ratios first increased and then decreased,while C : P and N : P ratios increased with elevation.(3) Soil pH was significantly negatively correlated with SOC,TN content and C : P ratio in the 0-15 cm soil layer. In the 15-30 cm soil layer,soil pH had no relationship with SOC,TN,TP contents and their stoichiometric characteristics. Soil moisture content was significantly positively correlated with SOC and TN contents both in 0-15 cm and 15-30 cm soil layers. Soil moisture increased with elevation,coinciding with the increases of SOC,TN contents and C : P,N : P ratios. Taken together,our results indicated that soil nutrient contents and stoichiometry in the study area were mainly influenced by soil moisture.
中文关键词	土壤养分 ; 半干旱区 ; 化学计量特征 ; 海拔
英文关键词	soil nutrient semi-arid area stoichiometric characteristics elevation
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:6670495
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318398
作者单位	李新星, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730000, 中国.; 刘桂民, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730000, 中国.; 吴小丽, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730000, 中国.; 纪庚好, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730000, 中国.; 李莉莎, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730000, 中国.; 毛楠, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730000, 中国.; 徐海燕, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730000, 中国.; 吴晓东, 中国科学院西北生态环境资源研究院, 冰冻圈国家重点实验室青藏高原冰冻圈观测研究站, 兰州, 甘肃 730000, 中国.
推荐引用方式 GB/T 7714	李新星,刘桂民,吴小丽,等. 马衔山不同海拔土壤碳、氮、磷含量及生态化学计量特征[J]. 中国科学院西北生态环境资源研究院,2020,39(3):758-765.
APA	李新星.,刘桂民.,吴小丽.,纪庚好.,李莉莎.,...&吴晓东.(2020).马衔山不同海拔土壤碳、氮、磷含量及生态化学计量特征.生态学杂志,39(3),758-765.
MLA	李新星,et al."马衔山不同海拔土壤碳、氮、磷含量及生态化学计量特征".生态学杂志 39.3(2020):758-765.