平茬高度对云南松苗木碳氮磷化学计量特征的影响

doi:10.13292/j.1000-4890.202203.012

生态学杂志 ›› 2022, Vol. 41 ›› Issue (5): 849-857.doi: 10.13292/j.1000-4890.202203.012

平茬高度对云南松苗木碳氮磷化学计量特征的影响

蔡年辉^1,2,唐军荣^1,2,车凤仙³,陈诗^1,2,王军民^1,2,许玉兰^1,2,李根前^1,2*

(¹西南林业大学，西南山地森林资源保育与利用教育部重点实验室，昆明 650224； ²西南林业大学，西南地区生物多样性保育国家林业局重点实验室，昆明 650224； ³弥渡县林木良种培育站，云南弥渡 675600）

出版日期:2022-05-10 发布日期:2022-10-10

Effects of stumping height on carbon, nitrogen, and phosphorus stoichiometry in different organs of Pinus yunnanensis seedlings.

CAI Nian-hui^1,2, TANG Jun-rong^1,2, CHE Feng-xian³, CHEN Shi^1,2, WANG Jun-min^1,2, XU Yu-lan^1,2, LI Gen-qian^1,2*

(¹Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; ²Key Laboratory of Biodiversity Conservation in Southwest China, State Forestry Administration, Southwest Forestry University, Kunming 650224, China; ³Tree Breeding Station of Midu County Forestry Bureau, Midu 675600, Yunnan, China).

Online:2022-05-10 Published:2022-10-10

摘要/Abstract

摘要： 为了解平茬对云南松（Pinus yunnanensis）苗木各器官碳（C）、氮（N）、磷（P）含量及其化学计量特征的影响，探讨C、N、P含量间的相关关系及其异速生长关系，本研究对不同平茬高度（对照、5、10和15 cm）的云南松苗木采样测定，分析主根、侧根、茎、侧枝、母株针叶、萌条枝、萌条针叶共7个器官的C、N、P含量及其C∶N、C∶P、N∶P值。结果表明：除C含量在平茬高度间无显著差异外，N含量、P含量、C∶N、C∶P、N∶P在平茬高度、器官、平茬高度×器官间均存在极显著差异；随着平茬高度的增加，N含量、P含量和N∶P呈现先上升后下降趋势，而C∶N和C∶P呈现相反的趋势；不同平茬高度下各器官营养元素含量及比值的变异系数波动低，表明平茬对C、N、P含量及其化学计量稳定性的影响较小；平茬处理下C含量与N、P含量间的相关关系有一定的改变，随着平茬高度的增加，C含量与N、P含量间的相关关系减弱；平茬未改变它们之间的异速生长关系，表现为C的积累速率低于N和P，苗木生长以N调控为主；综合来看，平茬改变植株体内的营养元素含量，进而改变植物体内C、N和P含量的平衡关系，云南松苗木表现以N调控为主，随着平茬高度的增加，苗木对N和P的利用表现为先降低后增加，N受限程度也表现为先降低后增加。

关键词: C∶N∶P, 化学计量, 养分限制, 异速生长

Abstract: To understand the effects of stumping on the contents and stoichiometry of carbon (C), nitrogen (N), and phosphorus (P) in different organs of Pinus yunnanensis seedlings, and the correlations and allometric relationships among C, N and P, the contents of C, N, P and the ratios of C∶N, C∶P and N∶P in seven organs (taproot, lateral root, stem, lateral branch, mother plant needle, sprout branch, sprout needle) of P. yunnanensis seedlings with different stumping heights (CK, 5, 10 and 15 cm) were analyzed. The results showed that N, P, C∶N, C∶P, N∶P had significant differences among stumping heights, organs, stumping heights×organs, except that C content showed no response to stumping height. With the increases of stumping height, N, P, C∶N, C∶P, N∶P showed a trend of first increase and then decrease, while C∶N and C∶P showed an opposite trend. The variation coefficients of contents and ratios of elements in each organ fluctuated slightly under different stumping heights, indicating that stumping had little effect on C, N, P contents and their stoichiometric stability. The correlations between C and N and between C and P changed among different stumping heights, while the correlations between C and N and between C and P were weakened with increasing stumping height. Stumping did not affect the allometric growth relationship between them, with the accumulation rate of C being lower than that of N and P, and the growth of seedlings being mainly regulated by N. In summary, stumping changed nutrient content, and then changed the balance of C, N and P in plants. The performance of P. yunnanensis seedlings was mainly regulated by N. With increasing stumping height, the utilization of N and P in seedlings decreased first and then increased, at the same time the degree of N limitation decreased first and then increased.

Key words: C∶N∶P, stoichiometry, nutrient limitation, allometric growth.

蔡年辉, 唐军荣, 车凤仙, 陈诗, 王军民, 许玉兰, 李根前. 平茬高度对云南松苗木碳氮磷化学计量特征的影响[J]. 生态学杂志, 2022, 41(5): 849-857.

CAI Nian-hui, TANG Jun-rong, CHE Feng-xian, CHEN Shi, WANG Jun-min, XU Yu-lan, LI Gen-qian. Effects of stumping height on carbon, nitrogen, and phosphorus stoichiometry in different organs of Pinus yunnanensis seedlings.[J]. Chinese Journal of Ecology, 2022, 41(5): 849-857.

[1]	何文祥, 施翔, 汪阳东, 罗明杨, 卢孟柱. 栎树幼苗化学计量特征对尾矿库环境的响应 [J]. 生态学杂志, 2024, 43(4): 1025-1035.
[2]	邓雪花, 喻阳华, 熊康宁, 张仕豪, 孔令伟. 不同海拔花椒叶片-凋落物养分化学计量与重吸收的关系 [J]. 生态学杂志, 2024, 43(3): 749-757.
[3]	王凯, 邢仕奇, 张日升, 吕林有, 刘畅. 科尔沁沙地杨树人工林植物-土壤C、N、P化学计量变化 [J]. 生态学杂志, 2024, 43(1): 162-169.
[4]	邹佳何, 王海燕, 李成铭, 崔雪, 赵晗, 陈悦, 董齐琪, 侯文宁. 长白山北坡不同林分类型细根-土壤C、N、P化学计量特征 [J]. 生态学杂志, 2024, 43(1): 170-177.
[5]	申景昕, 范少辉, 刘广路, 魏松坡. 毛竹林带采伐宽度对土壤碳氮磷含量及计量比的影响 [J]. 生态学杂志, 2023, 42(8): 1851-1857.
[6]	陈超, 罗光宇, 金则新, 袁梦, 李月灵, 单方权. 光照强度对景宁木兰幼苗叶片形态结构、化学计量特征和非结构性碳水化合物的影响 [J]. 生态学杂志, 2023, 42(6): 1307-1315.
[7]	苏宇航, 宋晓倩, 郑晶文, 张衷华, 唐中华. 四种藜科植物不同器官主要营养元素化学计量特征比较 [J]. 生态学杂志, 2023, 42(3): 626-634.
[8]	王凯, 齐悦彤, 那恩航, 陶江, 刘建华, 康宏樟. 基于器官凋落叶-土壤生态化学计量特征的樟子松和赤松人工林养分利用策略 [J]. 生态学杂志, 2023, 42(2): 274-281.
[9]	盖杨菊, 刘爽, 张昆, 李文韬, 郭雪莲. 围栏禁牧对纳帕海湿地土壤生态化学计量特征的影响 [J]. 生态学杂志, 2023, 42(10): 2351-2358.
[10]	陈友余, 杨国姣, 梁潇洒, 丁聪, 胡艳宇, 杨雁茹, 张志委, 吕晓涛. 氮素输入对呼伦贝尔草甸草原植物群落氮磷化学计量特征的影响 [J]. 生态学杂志, 2022, 41(8): 1517-1524.
[11]	陈志杰, 肖宇童, 董雄德, 王唯锦, 王建, 翟文芳, 田梦, 韩士杰. 黄河中下游滩区泥沙淤积对土壤化学计量比的影响 [J]. 生态学杂志, 2022, 41(7): 1334-1341.
[12]	李石一宁, 熊德成, 姚晓东, 王小红, 陈廷廷, 姜琦, 贾林巧, 范爱莲, 陈光水. 常绿阔叶林中壳斗科树种细根形态与养分含量的序级变化特征 [J]. 生态学杂志, 2022, 41(5): 833-840.
[13]	程昊天, 孔涛, 吕刚, 王东丽, 黄丽华, 张开, 王翼翔. 不同林龄樟子松人工林土壤-针叶-微生物生态化学计量及稳态性特征 [J]. 生态学杂志, 2022, 41(5): 887-894.
[14]	闫本帅, 孙利鹏, 李晶晶, 高利强, 乔占国, 高小峰, 吴春晓, 王国梁. 辽东栎林次生演替过程中土壤酶化学计量特征变化 [J]. 生态学杂志, 2022, 41(4): 641-647.
[15]	刘西军, 蔡天培, 杜杰, 袁莉芹, 陈杰, 徐小牛. 氮添加和采脂对湿地松林土壤酶活性及酶化学计量比的影响 [J]. 生态学杂志, 2022, 41(2): 227-235.

平茬高度对云南松苗木碳氮磷化学计量特征的影响

Effects of stumping height on carbon, nitrogen, and phosphorus stoichiometry in different organs of Pinus yunnanensis seedlings.

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价