氮添加对武夷山米槠径向生长的影响

doi:10.13209/j.0479-8023.2017.126

摘要/Abstract

摘要：

通过设置对照(0)、低氮(50 kg N/(hm²·a))、中氮(100 kg N/(hm²·a))和高氮(150 kg N/(hm²·a)) 4 种水平的氮添加实验, 研究武夷山米槠(Castanopsis carlesii)径向生长的季节特征及其对模拟氮沉降的短期响应。结果表明, 米槠的全年生长可分为水分恢复期、快速生长期和缓慢生长期3个阶段。不同生长阶段对施肥的响应不同, 低氮和中氮处理对米槠的全年胸径相对生长速率有显著促进作用, 这种影响主要在快速生长期(6— 10月)产生, 氮添加在缓慢生长期(11—4月)对米槠径向生长无显著影响。氮添加对不同径级树木生长的影响存在差异, 低氮和中氮处理显著促进低径级(5 cm<DBH<15 cm)(p<0.05)的生长速率, 高氮处理的作用不显著; 随着径级增大, 米槠径向生长对氮添加的敏感性下降, 氮添加对高径级(DBH>25 cm)米槠径向生长无显著响应。中氮处理显著提高研究区内米槠群落的生物量增长速率(p<0.05), 其他处理的效果不显著。

关键词: 树木生长, 氮沉降, 生长阶段, 径级

Abstract:

The authors carried out a N enrichment experiment in Wuyi Mountain with four N addition levels (control (0), low N (50 kg N/(hm²·a)), medium N (100 kg N/(hm²·a)) and high N (150 kg N/(hm²·a))) This study was designed to study the seasonal characteristics of DBH (diameter at breast height) growth of Castanopsis carlesii and its short term response to simulated nitrogen deposition. Results show that the Castanopsis carlesii annual growth can be divided into 3 periods: water recovery period, fast growth period and slow growth period. N additions play different roles on the growth of Castanopsis carlesii. In the fast growth period (June to October), low N and medium N significantly increase the relative growth rate of annual DBH. Relative DBH growth in slow growth period (November to April) has no significant response to N addition. Among different diameter classes, N additions affect the DBH growth differently: low and medium N additions significantly promote growth in low diameter class (5 cm<DBH<15 cm) (p<0.05), but the tree growth has no significant response to high N addition. With the increase of tree diameter, the DBH growth of Castanopsis carlesii decreases sensitivity to N additions. High diameter class (DBH>25 cm) does not show significant response to N deposition. The study also finds that medium N addition significantly increase the biomass growth rate of Castanopsis carlesii in the study area (p<0.05).

Key words: tree growth, nitrogen deposition, growth stage, diameter class

张歆阳, 王乔姝怡, 邢娟, 曾发旭, 方福清, 郑成洋. 氮添加对武夷山米槠径向生长的影响[J]. 北京大学学报自然科学版, 2017, 53(6): 1143-1149.

Xinyang ZHANG, Qiaoshuyi WANG, Juan XING, Faxu ZENG, Fuqing FANG, Chengyang ZHENG. Effects of Nitrogen Addition on the Radial Growth of Castanopsis carlesii in Wuyi Mountain[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2017, 53(6): 1143-1149.

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链接本文: https://xbna.pku.edu.cn/CN/10.13209/j.0479-8023.2017.126

https://xbna.pku.edu.cn/CN/Y2017/V53/I6/1143

图/表 6

表1 样地米槠基本信息

Table 1 Basic information of Castanopsis carlesii in the plots

处理	株数	平均胸径/cm	最大胸径/cm	最小胸径/cm	平均树高/m	最大树高/m	最小树高/m
对照(CK)	58	22.4	37.4	9.4	20.1	25.0	6.0
低氮(N5)	31	19.1	29.6	9.2	18.0	24.0	5.5
中氮(N10)	26	20.1	35.5	5.2	19.3	24.0	5.5
高氮(N15)	50	20.1	35.8	8.3	18.8	24.0	6.5

表2 样地4棵米槠样树基本信息

Table 2 The basic information of four sample Castanopsis carlesiis in the plots

样树编号	初始DBH/cm	树高/m
a	26.3	20.1
b	25.7	20.8
c	23.4	19.0
d	27.5	18.7

图1 2014—2015年米槠全年径向累计变化

Fig. 1 Cumulative radial variation of Castanopsis carlesii from 2014 to 2015

图2 2014 年3月15日—2015年3月1日, 以15日为1组的米槠径向变化分布

Fig. 2 Stem radius variation distribution of Castanopsis carlesii grouped at 15 days from 15 Mar. 2014 to 1 Mar. 2015

图3 不同氮浓度处理米槠径向相对生长速率变化

Fig. 3 Responses of Castanopsis carlesii diameter at breast height (DBH) relative growth rate under different N treatments

图4 不同径级米槠全年径向相对生长速率对氮添加的响应

Fig. 4 Responses of Castanopsis carlesii DBH relative growth rate under different N treatments among different tree diameter classes

参考文献 41

[1]	Galloway J N, Schlesinger W H, Levy H, et al.Nitrogen fixation: anthropogenic enhancement-envir-onmental response. Global Biogeochemical Cycles, 1995, 9(2): 235-252
[2]	Vitousek P M, Farrington H.Nutrient limitation and soil development: experimental test of a biogeoche-mical theory. Biogeochemistry, 1997, 37(1): 63-75
[3]	Matthews E.Nitrogenous fertilizers: global distri-bution of consumption and associated emissions of nitrous oxide and ammonia. Global Biogeochemical Cycles, 1994, 8(4): 411-439
[4]	王小治, 朱建国, 高人, 等. 太湖地区氮素湿沉降动态及生态学意义: 以常熟生态站为例. 应用生态学报, 2004, 15(9): 1616-1620
[5]	周国逸, 闫俊华. 鼎湖山区域大气降水特征和物质元素输入对森林生态系统存在和发育的影响. 生态学报, 2001, 21(12): 2002-2012
[6]	李德军, 莫江明, 方运霆, 等. 氮沉降对森林植物的影响. 生态学报, 2003, 23(9): 1891-1900
[7]	Matson P, Hall S J.The globalization of nitrogen deposition: consequences for terrestrial ecosystems. Ambio, 2002, 31(2): 113-119
[8]	Vejre H, Callesen I, Vesterdal L, et al.Carbon and nitrogen in Danish forest soils — contents and distri-bution determined by soil order. Soilence Society of America Journal, 2003, 67(1): 335-343
[9]	周利勋, 刘广平, 王金波. 落叶松人工林的施肥效应. 东北林业大学学报, 2004, 32(2): 16-18
[10]	Hyvönen R, Persson T, Andersson S, et al.Impact of long-term nitrogen addition on carbon stocks in trees and soils in northern Europe. Biogeochemistry, 2008, 89(1): 121-137
[11]	Thomas R Q, Canham C D, Weathers K C, et al.Increased tree carbon storage in response to nitrogen deposition in the US. Nature Geoscience, 2010, 3(1): 13-17
[12]	Aber J, McDowell W, Nadelhoffer K, et al. Nitrogen saturation in temperate forest ecosystems-Hypotheses revisited. Bioscience, 1998, 48(11): 921-934
[13]	Neff J C, Townsend A R, Gleixner G, et al.Variable effects of nitrogen additions on the stability and turnover of soil C. Nature, 2002, 419: 915-917
[14]	Nordin A, Strengbom J, Witzell J, et al.Nitrogen deposition and the biodiversity of boreal forests: implications for the nitrogen critical load. Ambio, 2005, 34(1): 20-24
[15]	Solberg S, Dobbertin M, Reinds G J, et al.Analyses of the impact of changes in atmospheric deposition and climate on forest growth in European monitoring plots: a stand growth approach. Forest Ecology and Management, 2009, 258(8): 1735-1750
[16]	Vries W D, Du E, Butterbach-Bahl K.Short and long-term impacts of nitrogen deposition on carbon sequestration by forest ecosystems. Current Opinion in Environmental Sustainability, 2014, 9/10: 90-104
[17]	Laubhann D, Sterba H, Reinds G J, et al.The impact of atmospheric deposition and climate on forest growth in European monitoring plots: an individual tree growth model. Forest Ecology & Management, 2009, 258(8): 1751-1761
[18]	Cusack D F, Silver W L, Torn M S, et al.Effects of nitrogen additions on above- and belowground carbon dynamics in two tropical forests. Biogeochemistry, 2011, 104: 203-225
[19]	Mirmanto E, Proctor J, Green J, et al.Effects of nitrogen andphosphorus fertilization in a lowland evergreen rainforest. Philosophical Transactions of the Royal Society of London Series B — Biological Sciences, 1999, 354: 1825-1829
[20]	Vitousek P M, Porder S, Houlton B Z, et al.Terre-strial phosphorus limitation: mechanisms, implications, and nitrogen-phosphorus interactions. Ecological Applications, 2010, 20(1): 5-15
[21]	LeBauer D S, Treseder K K. Nitrogen limitation of net primary productivity in terrestrial ecosystems is globally distributed. Ecology, 2008, 89(2): 371-379
[22]	李德军, 莫江明, 方运霆, 等. 模拟氮沉降对南亚热带两种乔木幼苗生物量及其分配的影响. 植物生态学报, 2005, 29(4): 543-549
[23]	李德军, 莫江明, 方运霆, 等. 模拟氮沉降对三种南亚热带树苗生长和光合作用的影响. 生态学报, 2004, 24(5): 876-882
[24]	吴茜, 丁佳, 闫慧, 等. 模拟降水变化和土壤施氮对浙江古田山 5 个树种幼苗生长和生物量的影响. 植物生态学报, 2011, 35(3): 256-267
[25]	陈仁华. 武夷山国家级自然保护区土壤的现状与保护. 林业勘察设计, 2006(2): 133-135
[26]	李明阳, 吴军, 时宇, 等. 武夷山国家级自然保护区森林土壤涵水量估测及空间分析. 西南林业大学学报, 2014, 34(1): 1-7
[27]	Drew D M, Downes G M.The use of precision dendrometers in research on daily stem size and wood property variation: a review. Dendrochronologia, 2009, 27(2): 159-172
[28]	Deslauriers A, Rossi S, Anfodillo T.Dendrometer and intra-annual tree growth: what kind of information can be inferred. Dendrochronologia, 2007, 25(2): 113-124
[29]	李兴欢, 刘瑞鹏, 毛子军, 等. 小兴安岭红松日径向变化及其对气象因子的响应. 生态学报, 2014, 34(7): 1635-1644
[30]	Bouriaud O, Leban J M, Bert D, et al.Intra-annual variations in climate influence growth and wood density of Norway spruce. Tree Physiology, 2005, 25(6): 651-660
[31]	樊后保, 刘文飞, 李燕燕, 等. 亚热带杉木(Cun-ninghamia lanceolata)人工林生长与土壤养分对氮沉降的响应. 生态学报, 2007, 27(11): 4630-4642
[32]	方运霆, 莫江明, 周国逸, 等. 鼎湖山主要森林类型植物胸径生长对氮沉降增加的初期响应. 热带亚热带植物学报, 2005, 13(3): 198-204
[33]	周璋. 氮磷添加对海南热带山地雨林碳循环的影响[D]. 北京: 北京大学, 2013
[34]	Ouyang X J, Zhou G Y, Huang Z L, et al.Effect of simulated acid rain on potential carbon and nitrogen mineralization in forest soils. Pedosphere, 2008, 18(4): 503-514
[35]	Gundersen P, Emmett B A, Kjønaas O J, et al.Impact of nitrogen deposition on nitrogen cycling in forests: a synthesis of NITREX data. Forest Ecology & Management, 1998, 101(1/2/3): 37-55
[36]	Tietema A.Microbial carbon and nitrogen dynamics in coniferous forest floor material collected along a European nitrogen deposition gradient. Forest Ecology & Management, 1998, 101(1): 29-36
[37]	郑威, 闫文德, 梁小翠, 等. 氮添加对樟树林生长的影响. 中南林业科技大学学报, 2013, 33(4): 34-37
[38]	Kajimoto T, Matsuura Y, Sofronov M A, et al.Above- and belowground biomass and primary productivity of a Larix gmelinii stand near Tura, central Siberia. Tree Physiology, 1999, 19(12): 815-822
[39]	Murty D, Mcmurtrie R E, Ryan M G.Declining forest productivity in aging forest stands: a modeling analy-sis of alternative hypotheses. Tree Physiology, 1996, 16(1/2): 187-200
[40]	Ryan M G, Yoder B J.Hydraulic limits to tree height and tree growth. Bioscience, 1997, 47(4): 235-242
[41]	Hérault B, Bachelot B, Poorter L, et al.Functional traits shape ontogenetic growth trajectories of rain forest tree species. Journal of Ecology, 2011, 99(6): 1431-1440