不同季节杉木幼苗叶片养分和代谢组分对增温和减少降水的响应

	不同季节杉木幼苗叶片养分和代谢组分对增温和减少降水的响应
其他题名	Nutrient and metabolic responses of the leaves of Cunninghamia lanceolata seedlings to warming and reduced precipitation in different seasons
	张秋芳 1; 吕春平 2; 周嘉聪 3; 李晓杰 4; 郑永 5; 熊德成 6; 陈岳民 7; 杨玉盛 8
	2019
发表期刊	应用生态学报
ISSN	1001-9332
卷号	30 期号:2 页码:420-428
摘要	We examined the effects of warming ( +5 ℃) and reduced natural precipitation ( -50%) on nutrient status and physiological indices of Cunninghamia lanceolata seedlings during winter and summer in subtropical China. The results showed that seasonal changes in temperature and precipitation caused the seasonal differences in plant nutrient contents and metabolites levels. Contents of carbon,nitrogen,phosphorus,and potassium in leaves in winter were significantly higher than those in summer. In summer,reduced precipitation and warming had no significant effects on antioxidant enzyme activities in C. lanceolata leaves. In winter,superoxide dismutase and peroxidase activities in the leaves significantly decreased with reduced precipitation by 20.7% and 17.8%. Additionally,in winter,warming treatment significantly increased non-enzymatic ascorbic acid content by 132. 5%. Carbon content decreased,whereas proline accumulation and nitrogen content increased under stress induced by combined warming and reduced precipitation in winter. However,carbon content increased by 3. 3% under the treatment of simultaneous warming and reduced precipitation in summer. In addition,combined warming and reduced precipitation had no significant effects on the antioxidant system irrespective of the season. In conclusion,the adaptation mechanism of C. lanceolata to warming in summer might be different from that in winter. The changes in nutrient contents in C. lanceolata leaves were more sensitive to stress induced by combined warming and reduced precipitation. Nutrient demand and supply and seasonal changes in plant responses under climate change scenarios should be considered for better managing forest plantations and improving plant productivity.
其他摘要	研究冬季和夏季亚热带杉木幼苗在增温5 ℃和减少50%自然降水处理下叶片养分和代谢组分的变化.结果表明:由于不同季节温度和水分差异,杉木叶片的养分和生理代谢组分在不同季节有不同的表现.冬季杉木叶片碳、氮、磷和钾含量显著高于夏季.夏季减少降水、增温处理对杉木叶片各类抗氧化酶活性均无显著影响,冬季减少降水处理分别显著降低超氧化物歧化酶活性20.7%和过氧化物酶活性17.8%.冬季增温后杉木叶片非酶促的抗坏血酸含量显著增加132.5%.冬季增温+减少降水处理降低杉木碳含量,促进渗透物质脯氨酸和氮含量的累积.夏季增温+减少降水处理显著提高杉木叶片碳含量3.3%.无论是冬季还是夏季,增温+减少降水处理对杉木叶片抗氧化系统无显著影响.植物对夏季增温的适应机制与冬季增温不同,杉木叶片的养分变化对同时增温+减少降水更加敏感.为了更好地管理种植林,以提高植物的生产力,在未来气候变化下,应提高植物对养分供需和对季节响应的关注.
关键词	季节增温减少降水养分代谢组分 season warming reduced precipitation nutrient metabolome
收录类别	CSCD
语种	中文
WOS关键词	Forestry
WOS研究方向	Science & Technology
WOS类目	FORESTRY
CSCD记录号	CSCD:6426863
引用统计	被引频次：1[CSCD] [CSCD记录]
文献类型	期刊论文
专题	任务一_子任务一循证社会科学证据集成任务一
作者单位	1.福建师范大学地理科学学院, 湿润亚热带山地生态国家重点实验室培育基地, 福州, 福建 350007, 中国 2.福建师范大学地理科学学院, 湿润亚热带山地生态国家重点实验室培育基地, 福州, 福建 350007, 中国 3.福建师范大学地理科学学院, 湿润亚热带山地生态国家重点实验室培育基地, 福州, 福建 350007, 中国 4.福建师范大学地理科学学院, 湿润亚热带山地生态国家重点实验室培育基地, 福州, 福建 350007, 中国 5.福建师范大学地理科学学院, 湿润亚热带山地生态国家重点实验室培育基地, 福州, 福建 350007, 中国 6.福建师范大学地理科学学院, 湿润亚热带山地生态国家重点实验室培育基地, 福州, 福建 350007, 中国 7.福建师范大学地理科学学院, 湿润亚热带山地生态国家重点实验室培育基地, 福州, 福建 350007, 中国 8.福建师范大学地理科学学院, 湿润亚热带山地生态国家重点实验室培育基地, 福州, 福建 350007, 中国
推荐引用方式 GB/T 7714	张秋芳,吕春平,周嘉聪,等. 不同季节杉木幼苗叶片养分和代谢组分对增温和减少降水的响应[J]. 应用生态学报,2019,30(2):420-428.
APA	张秋芳.,吕春平.,周嘉聪.,李晓杰.,郑永.,...&杨玉盛.(2019).不同季节杉木幼苗叶片养分和代谢组分对增温和减少降水的响应.应用生态学报,30(2),420-428.
MLA	张秋芳,et al."不同季节杉木幼苗叶片养分和代谢组分对增温和减少降水的响应".应用生态学报 30.2(2019):420-428.