武夷山不同海拔黄山松新叶和老叶氮磷化学计量特征

	武夷山不同海拔黄山松新叶和老叶氮磷化学计量特征
其他题名	Nitrogen and phosphorus stoichiometric characteristics of new and old leaves in Pinus taiwanensis at different altitudes in Wuyi Mountain
	付作琴 1; 吕茂奎 2; 李晓杰 3; 任寅榜 4; 聂阳意 5; 邓翠 6; 曾敏 7; 张康靖 8; 阮超越 9; 谢锦升 10
	2019
发表期刊	生态学杂志
ISSN	1000-4890
卷号	38 期号:3 页码:648-654
摘要	Foliar nitrogen to phosphorus ratio ( N ∶ P) is widely used as an indicator of soil nutrient availability and nutrient limitation. Therefore,it is necessary to determine the most sensitive plant tissue as the indicator of soil nutrient status. Pinus taiwanensis occupies a wide range of habitats in the Wuyi Mountain,China. Here,soil,new and old leaves of P. taiwanensis from three altitudes ( 1100,1500,and 1900 m a.l.s.) were sampled in Wuyi Mountain. The concentrations of carbon ( C),nitrogen ( N) and phosphorus ( P) as well as delta~(15)N values of soil,new and old leaves were measured. The stoichiometric ratios of C,N and P ( i. e. C ∶ N,C ∶ P, N ∶ P) in soil and leaves were calculated,respectively. Results showed that there was no significant difference in soil N availability among different altitudes,while the delta~(15)N of soil and leaves increased with altitude,indicating that N availability for plants increased with elevations. Soil total P and available P concentrations,and P concentration of leaves at 1100 m altitude were lower than those at 1500 and 1900 m altitudes,indicating that the availability of soil N and P may serve as a limiting factor to the growth of P. taiwanensis at low altitude. There was no significant difference in the N and P concentrations and N ∶ P of the new leaves of P. taiwanensis among different altitudes. There was no correlation between N ∶ P in new leaves and soil nutrients. However,the variation patterns of N and P concentrations in old leaves were similar to those in soils,and the N ∶ P ratio in old leaves were closely related to soil nutrients. Our results indicated that old leaves of P. taiwanensis were more sensitive to soil nutrient status than the new leaves along the altitudinal gradient,which is beneficial to exploring the response of plant growth to variation in soil nutrients in the context of future climate change.
其他摘要	土壤是植物养分的直接来源,植物叶片的养分特征在一定程度上能反映土壤养分状况.叶片氮磷比( N ∶ P)被广泛用于指示土壤养分有效性和养分限制性,选择对土壤养分最敏感的叶片来指示土壤养分状况具有重要意义.为比较黄山松新叶和老叶指示土壤养分状况的准确性,在福建武夷山选择了3个海拔( 1100、1500和1900 m)的黄山松新叶和老叶作为研究对象,通过测定土壤碳( C) 、氮( N) 、磷( P)含量,黄山松叶片N、P含量及土壤和叶片~(15)N丰度值,并计算土壤和叶片的化学计量比,从而揭示黄山松新叶和老叶对不同海拔土壤养分状况的敏感性.结果表明:( 1)不同海拔土壤氮有效性无显著差异,而土壤和叶片15N丰度值随海拔呈递增趋势,说明土壤氮素对植物的有效性随海拔升高而增加;低海拔( 1100 m)土壤总P和有效P含量低于高海拔( 1500和1900 m)处,且低海拔叶片P含量也显著低于高海拔;( 2)黄山松新叶N、P和N ∶ P随海拔升高均无显著变化,且新叶N ∶ P与土壤养分相关性不大;老叶N、P含量与土壤养分相关性较密切,表明黄山松老叶较新叶对不同海拔土壤养分状况响应更敏感,更能指示土壤养分状况.因此,这些研究结果明晰了不同海拔植物新叶和老叶对土壤养分状况的敏感性差异,对于我们进一步了解未来气候变化背景下不同海拔植物生长对土壤养分状况变化的响应具有重要意义.
关键词	武夷山黄山松新叶老叶土壤养分海拔梯度 Wuyi Mountain Pinus taiwanensis new leaf old leaf soil nutrient elevation gradient
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:6443681
引用统计	被引频次：9[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, 福州, 福建 350007, 中国 2.福建师范大学地理科学学院, 福州, 福建 350007, 中国 3.福建师范大学地理科学学院, 福州, 福建 350007, 中国 4.福建师范大学地理科学学院, 福州, 福建 350007, 中国 5.福建师范大学地理科学学院, 福州, 福建 350007, 中国 6.福建师范大学地理科学学院, 福州, 福建 350007, 中国 7.福建师范大学地理科学学院, 福州, 福建 350007, 中国 8.福建师范大学地理科学学院, 福州, 福建 350007, 中国 9.福建师范大学地理科学学院, 福州, 福建 350007, 中国 10.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, ;;湿润亚热带山地生态国家重点实验室培育基地, 福州;;福州, ;; 350007;;350007
推荐引用方式 GB/T 7714	付作琴,吕茂奎,李晓杰,等. 武夷山不同海拔黄山松新叶和老叶氮磷化学计量特征[J]. 生态学杂志,2019,38(3):648-654.
APA	付作琴.,吕茂奎.,李晓杰.,任寅榜.,聂阳意.,...&谢锦升.(2019).武夷山不同海拔黄山松新叶和老叶氮磷化学计量特征.生态学杂志,38(3),648-654.
MLA	付作琴,et al."武夷山不同海拔黄山松新叶和老叶氮磷化学计量特征".生态学杂志 38.3(2019):648-654.