干旱区生态环境知识资源中心(Arid): 氮沉降背景下藓类植物齿肋赤藓的氮磷特征及异速生长关系

Arid

	氮沉降背景下藓类植物齿肋赤藓的氮磷特征及异速生长关系
其他题名	Characteristics of nitrogen and phosphorus concentrations and their allometric relationship in moss plants Syntrichia caninervis under elevated nitrogen deposition
	梅月磊; 陶冶; 李永刚; 张元明; 张玲卫; 周晓兵
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2021
卷号	40 期号:10 页码:3159-3166
中文摘要	随着全球变化的加剧,氮沉降的生态效应越发受到关注,尤其是氮缺乏且对氮响应敏感的荒漠生态系统。藓类结皮是荒漠生物土壤结皮发育的高级阶段,对荒漠生态系统氮素循环具有重要作用,但藓类植物养分状况对氮沉降的响应特征尚不明晰。以古尔班通古特沙漠优势藓类齿肋赤藓(Syntrichia caninervis)为研究对象,通过模拟不同氮沉降水平(0~3 g N·m~(-2)·a~(-1)),对比研究了齿肋赤藓地上和地下部分氮磷化学计量对氮沉降的响应特征。结果表明:藓类植物地上部分氮(17.89 g·kg~(-1)) 、磷(1.81 g·kg~(-1))含量高于地下部分(氮13.95 g·kg~(-1)、磷1.28 g·kg~(-1)),但两部分氮磷比差异不显著;随氮沉降增加,地上部分氮、磷含量均呈现先升后降趋势,地下部分氮含量与地上部分变化趋势相同,但磷含量受氮影响不显著。地上部分氮磷比随氮沉降增加保持相对稳定,而地下部分氮磷比有显著增加趋势;齿肋赤藓植物化学计量响应与其生长状态一致,呈低氮促进而高氮抑制的效应,但地上与地下部分氮、磷之间能够协同变化,具有异速生长特征。本研究加深了对荒漠藓类植物适应荒漠环境能力的理解,为评估长期氮沉降下荒漠藓类植物生长趋势提供依据。
英文摘要	Along with the intensification of global change,more and more researches have been focused on the ecological effects of nitrogen deposition,especially for the deserts which are limited by nitrogen availability and sensitive to changes in nitrogen inputs. Moss crust is the late successional stage of biological soil crusts,which plays an important role in nitrogen cycling of deserts. However,the responses of moss nutrient to nitrogen deposition are still unclear. In this study, different nitrogen deposition levels (0 - 3 g N·m~(-2)·a~(-1)) were simulated on moss crust dominated by S. caninervis in the Gurbantunggut Desert. Nitrogen and phosphorus stoichiometry in aboveground and belowground parts of S. caninervis under nitrogen deposition were examined. Concentrations of nitrogen (17.89 g·kg~(-1)) and phosphorus (1.81 g·kg~(-1)) in the aboveground part of moss were higher than that in the belowground part (13.95 vs. 1.28 g·kg~(-1)),while there was no difference in ratio of nitrogen to phosphorus between the two parts. With increasing nitrogen deposition level,the concentrations of nitrogen and phosphorus in the aboveground part increased firstly and then decreased. The nitrogen concentration in the belowground part had a similar trend to that in the aboveground part,whereas the phosphorus concentration was not affected by nitrogen addition. The ratio of nitrogen to phosphorus in aboveground part remained relatively stable,while the ratio in belowground part increased with increasing nitrogen deposition level. Our results showed that the stoichiometric response of S. caninervis was consistent with its growth responses,with positive effects of low nitrogen addition dose and negative effects of high dose. Nitrogen and phosphorus concentrations can vary coordinately between the aboveground and belowground parts and showed an allometric relationship. This study improved our understanding of the adaptive ability of desert mosses,and provided scientific basis to assess the growth trend of desert mosses under long-term nitrogen deposition.
中文关键词	氮沉降 ; 齿肋赤藓 ; 化学计量 ; 异速生长 ; 古尔班通古特沙漠
英文关键词	nitrogen deposition Syntrichia caninervis stoichiometry allometric growth Gurbantunggut Desert
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:7066832
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377875
作者单位	梅月磊, 新疆农业大学草业与环境科学学院;;中国科学院新疆生态与地理研究所, ;;荒漠与绿洲生态国家重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830052;;830011.; 陶冶, 中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国.; 李永刚, 中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国.; 张元明, 中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国.; 周晓兵, 中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国.; 张玲卫, 新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国.
推荐引用方式 GB/T 7714	梅月磊,陶冶,李永刚,等. 氮沉降背景下藓类植物齿肋赤藓的氮磷特征及异速生长关系[J],2021,40(10):3159-3166.
APA	梅月磊,陶冶,李永刚,张元明,张玲卫,&周晓兵.(2021).氮沉降背景下藓类植物齿肋赤藓的氮磷特征及异速生长关系.生态学杂志,40(10),3159-3166.
MLA	梅月磊,et al."氮沉降背景下藓类植物齿肋赤藓的氮磷特征及异速生长关系".生态学杂志 40.10(2021):3159-3166.