中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 不同林龄杉木养分重吸收率及其C∶N∶P化学计量特征 西北林学院学报 2017 (4) 22-27
Position: Home > Articles > Nutrient Resorption Efficiency and C∶N∶P Stoichiometry of Cunninghamia lanceolata Plantations with Different Ages Journal of Northwest Forestry University 2017 (4) 22-27

不同林龄杉木养分重吸收率及其C∶N∶P化学计量特征

作  者：
邱岭军;胡欢甜;林宝平;汪凤林;林宇;何宗明;刘桌明
单  位：
福建农林大学林学院;福建省长乐大鹤国有防护林场;国家林业局杉木工程技术研究中心
关键词：
杉木;C∶N∶P;养分重吸收;生态计量化学;养分限制
摘  要：
为探究不同林龄杉木成熟叶与衰老叶之间的重吸收率及其C∶N∶P化学计量特征,以8、14、21、46年生杉木为研究对象,测定并计算其鲜叶、凋落叶和表层土壤的养分含量、重吸收率及其C∶N∶P化学计量比。结果表明:1)不同林龄间叶片C、N含量差异显著(P<0.05),叶片、凋落叶P含量差异性均极显著(P<0.01),14年生杉木叶片N含量显著高于其他3个年龄的树木(P<0.05),呈单峰型;2)较高的C∶N、C∶P比是植物对养分较高利用率的体现,杉木鲜叶养分含量均与其重吸收率均呈负相关,N、P利用效率在一定范围随N、P含量的升高而降低;3)本区植物N、P重吸收率分别在33.89%~38.40%和37.49%~46.35%之间,P重吸收率>N,且不同林龄杉木成熟鲜叶N∶P>16,表明该地区杉木的生长可能受到P元素限制。
译  名：
Nutrient Resorption Efficiency and C∶N∶P Stoichiometry of Cunninghamia lanceolata Plantations with Different Ages
作  者：
QIU Ling-jun;HU Huan-tian;LIN Bao-ping;WANG Feng-lin;LIN Yu;HE Zong-ming;LIU Zhuo-ming;Forestry College of Fujian Agriculture and Forestry University;Chinese Fir Engineering Technology Research Center,State Forestry Administration;Changle Dahe State-Owned Protection Forest Farm of Fujian Province;
关键词：
Cunninghamia lanceolata;;C∶N∶P;;resorption efficiency;;egcological stoichometry;;nutrition limitation
摘  要：
To explore nutrient resorption efficiency and C∶N∶P stoichiometry of Cunninghamia lanceolata plantations with different ages,8-,14-,21-,and 46-year-old C.lanceolatatrees were used as research objectives.Nutrient contents in the fresh mature leaves,fallen leaves,and facial soil were measured.The rate of resorption and C∶N∶P stoichiometry were calculated.The results showed that 1)the contents of C,N and P in the trees was significantly higher than those in soil.The differences in the contents of C and N between the trees with different ages were significant(P<0.05),P contents in the fresh leaves and litter were very significantly different(P<0.01).The content of N in the leaves of 14-year-old trees was significantly higher than that in other three age groups(P<0.05).2)Leaf C∶N and C∶P were less than that of litter,higher C∶N and C∶P ratio was the embodiment of higher utilization efficiency of the trees.3)The N and P reabsorption rates of the plants in this area ranged from 33.89%to 38.40% and from 37.49%to46.35,P resorption efficiency was greater than N.The ratio of N∶P in the fresh mature leaves in all age groups was greater than 16,indicating that P might be the main limiting factor for C.lanceolatagrowth.

相似文章

导出引用
计量
文章访问数: 12
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46