短花针茅荒漠草原不同斑块优势种植物的C，N，P化学计量特征

于瑞鑫; 王磊; 杨新国; 田娜; 王兴; 宋乃平

doi:10.13961/j.cnki.stbctb.2019.04.006

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短花针茅荒漠草原不同斑块优势种植物的C，N，P化学计量特征

试验研究

- 短花针茅荒漠草原不同斑块优势种植物的C，N，P化学计量特征
- C, N, P Stoichiometric Characteristics of Different Dominant Species in Stipa Breviflora Desert Steppe
- 水土保持通报 2019年39卷第4期页码：36-43
- 作者机构：
  
  1. 宁夏大学西北土地退化与生态系统恢复省部共建国家重点实验室培育基地,宁夏,银川,750021
  2. 宁夏大学西北退化生态系统恢复与重建教育部重点实验室,宁夏,银川,750021
  3. 南京大学国际地球系统科学研究所,江苏,南京,210093
- 作者简介：
- 基金信息：
  
  国家重点研发计划专题"限制放牧退化草地补播和改良技术集成与示范"（2016YFC0500700）;国家自然科学基金项目"荒漠草原不同叶型草地群落冠层光谱尺度效应及叶面积指数反演"（31760707）;宁夏回族自治区西部一流学科建设项目（NXYLXK2017B06）
- DOI：10.13961/j.cnki.stbctb.2019.04.006
  中图分类号： Q948.1
- 纸质出版：2019
- 稿件说明：
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于瑞鑫, 王磊, 杨新国, 等. 短花针茅荒漠草原不同斑块优势种植物的C，N，P化学计量特征[J]. 水土保持通报, 2019,39(4):36-43.

Yu Ruixin, Wang Lei, Yang Xinguo, et al. C, N, P Stoichiometric Characteristics of Different Dominant Species in Stipa Breviflora Desert Steppe[J]. Bulletin of Soiland Water Conservation, 2019, 39(4): 36-43.
于瑞鑫, 王磊, 杨新国, 等. 短花针茅荒漠草原不同斑块优势种植物的C，N，P化学计量特征[J]. 水土保持通报, 2019,39(4):36-43. DOI： 10.13961/j.cnki.stbctb.2019.04.006.

Yu Ruixin, Wang Lei, Yang Xinguo, et al. C, N, P Stoichiometric Characteristics of Different Dominant Species in Stipa Breviflora Desert Steppe[J]. Bulletin of Soiland Water Conservation, 2019, 39(4): 36-43. DOI： 10.13961/j.cnki.stbctb.2019.04.006.

摘要

[目的]研究斑块中优势种的生活史策略及对养分限制的响应，以及优势种生态化学计量学特征随季节变化的响应规律，为植物种群演替及变化过程研究提供科学依据。[方法]确定3类典型斑块：斑块A （短花针茅）、斑块B （短花针茅+草木樨状黄耆）、斑块C （猪毛蒿+苦豆子+老瓜头），测定优势种的全碳、全氮、全磷含量，计算C：N，C：P，N：P并进行方差分析。采用线性回归分析法对不同斑块C，N，P化学计量进行逐步回归分析。[结果]各斑块优势种的C，N，P及其计量比特征在生长季内的变化规律不同，且各指标季节间的变化特征在不同斑块之间也存在差异；植物C含量在不同优势种和不同斑块间的差异均不显著；短花针茅N含量显著小于其他优势种，导致斑块A的N含量总体显著小于另外两个斑块；植物P含量在斑块A中随着季节的变化表现为增长的趋势，而在斑块C中表现为先减小后增大的变化过程；斑块A植物的C：N值无显著的季节变化，C：P和N：P值在春季显著高于夏秋季；斑块B和斑块C不同优势种的C：N，C：P和N：P值均表现出显著的差异性，但随季节变化过程不同，斑块B除C：N值外均表现出下降的趋势，而斑块C各比值均表现出先增大后减小的变化规律。[结论]3种斑块C，N，P含量表现出不同的相关性；斑块A表现为防御性策略，斑块B表现为竞争性策略，而斑块C表现为竞争性和防御性策略共存。

Abstract

[Objective] The life history strategies of dominant species in patches and their responses to nutrient restriction

stoichiometry characterization of dominant species were studied in response to seasonal variation

which was expected to provid a scientific basis for the study of plant population succession and change process.[Methods] 3 typical patches

patch A(Stipa breviflora)

patch B(Stipa breviflora+Astragalus melilotoides)

patch C(Artemisia scoparia+Sophora alopecuroides+Cynanchum komarovii) were recognized and in which the dominated species were sampled

and its total carbon

total nitrogen

and total phosphorus contents were measured. Ratios of C:N

C:P

N:P were calculated and analysis of their variances were conducted. Stepwise linear regression analysis of stoichiometry of the patches was performed.[Results] The results showed that the changes of carbon(C)

nitrogen(N)

phosphorus(P) and their stoichiometry characterization of the dominant species in three patches were different during the growing season

and the seasonal variation characteristics were also different among the three patchesseason. The contents of C among the dominant species

and among the patches as well

had no significant differences. N content of S. breviflora was lower than than the values of other dominant species

which resulted to the significantly smaller level of the N content in patch A. P content of patch A increased along the growing season

while of patch C

it experienced an initial decrease and a succeeding increased. For patch A plants

there was no significant seasonal variation in C:N values

the values of C:P and N:P were significantly higher in spring than those in summer and in autumn. C:N

C:P and N:P values of the dominant species in patches B and C had significant differences. However

the seasonal variation was different:for patch B all values decreased except of C:N value

C:N

C:P and N:P values of patch C all increased first and then decreased.[Conclusion] The C

and P contents of three patches showed different correlations

patch A showed a defensive strategy

patch B showed a competitive strategy

while patch C showed a coexistence of competitive and defensive strategies.

关键词

Keywords

references

Reich P B, Tjoelker M G, Machado J L, et al. Universal scaling of respiratory metabolism, size and nitrogen in plants[J]. Nature, 2006,439(7075):457-461.

Elser J J, Bracken M E S, Cleland E E, et al. Global analysis of nitrogen and phosphorus limitation of primary producers in fresh water, marine and terrestrial ecosystems[J]. Ecology Letters, 2007,10(12):1135-1142.

Vitousek P M, Howarth V R W. Nitrogen limitation on land and in the sea:How can it occur?[J]. Biogeochemistry, 1991,13(2):87-115.

Vitousek, P M. Nutrient cycling and nutrient use efficiency[J]. The American Naturalist, 1982,119(4):553-572.

佘淑凤,胡玉福,舒向阳,等.川西北高寒沙地不同年限高山柳林下优势植物碳、氮、磷生态化学计量特征[J].草业学报,2018,27(4):123-130.

Elser J J, Sterner R W, Gorokhova E, et al. Biological stoichiometry from genes to ecosystems[J]. Ecology Letters, 2000,3(6):540-550.

He Jinsheng, Fang Jingyun, Wang Zhiheng, et al. Stoichiometry and large-scale patterns of leaf carbon and nitrogen in the grassland biomes of China[J]. Oecologia, 2006,149(1):115-122.

He Jinsheng, Wang Liang, Flynn D F B, et al. Leaf nitrogen:phosphorus stoichiometry across Chinese grassland biomes[J]. Oecologia, 2008,155(2):301-310.

牛得草,董晓玉,傅华.长芒草不同季节碳氮磷生态化学计量特征[J].草业科学,2011,28(6):915-920.

牛得草,李茜,江世高,等.阿拉善荒漠区6种主要灌木植物叶片C:N:P化学计量比的季节变化[J].植物生态学报,2013,37(4):317-325.

王凯博,上官周平.黄土丘陵区燕沟流域典型植物叶片C,N,P化学计量特征季节变化.生态学报,2011,31(17):4985-4991.

Göran I A. Stoichiometry and nutrition of plant growth in natural communities[J]. Annual Review of Ecology Evolution & Systematics, 2008,39(39):153-170.

Yu Qiang, Chen Quansheng, Elser J J, et al. Linking stoichiometric homeostasis with ecosystem structure, functioning, and stability[J]. Ecology Letters, 2010,13(11):1390-1399.

赵爱桃,郭思加.宁夏草地类型、特点及其利用[J].中国草地,1996(6):18-22.

沈彦.宁夏盐池沙化草地植被动态特征及围封效应研究[D].北京:北京林业大学,2008.

郝心敏.沙漠草原的中草药分布[J].内蒙古中医药,1999(3):17-19.

鲍士旦.土壤农化分析[M].北京:中国农业出版社,2000.

Güsewell S. N:P ratios in terrestrial plants:Variation and functional significance[J]. New Phytologist, 2010,164(2):243-266.

Craine J M, Jackson R D. Plant nitrogen and phosphorus limitation in 98 North American grassland soils[J]. Plant and Soil, 2010,334(1/2):73-84.

Harpole W S, Ngai J T, Cleland E E, et al. Nutrient co-limitation of primary producer communities[J]. Ecology Letters, 2011,14(9):852-862.

张珂,何明珠,李新荣,等.阿拉善荒漠典型植物叶片碳、氮、磷化学计量特征[J].生态学报,2014,34(22):6538-6547.

Aerts R, Chapin F S. The mineral nutrition of wild plants revisited:A re-evaluation of processes and patterns[J]. Advances in Ecological Research, 2000,30(3):1-67.

Han Wenxuan, Fang Jingyun, Guo D, et al. Leaf nitrogen and phosphorus stoichiometry across753 terrestrial plant species in China[J]. New Phytologist, 2005,168(2):377-385.

Elser J J, Fagan W F, Denno R F, et al. Nutritional constraints in terrestrial and freshwater food webs[J]. Nature, 2000,408(6812):578-580.

阎凯,付登高,何峰,等.滇池流域富磷区不同土壤磷水平下植物叶片的养分化学计量特征[J].植物生态学报,2011,35(4):353-361.

李征,韩琳,刘玉虹,等.滨海盐地碱蓬不同生长阶段叶片C,N,P化学计量特征[J].植物生态学报,2012.36(10):1054-1061.

Poorter L, Bongers F. Leaf traits are good predictors of plant performance across 53 rain forest species[J]. Ecology, 2006,87(7):1733-1743.

Shipley B, Lechowicz M J, Wright I, et al. Fundamental trade-offs generating the worldwide leaf economics spectrum[J]. Ecology, 2006,87(3):535-541.

Wright I J, Reich P B, Westoby M, et al. The worldwide leaf economics spectrum[J]. Nature, 2004,428(6985):821-827.

崔东,陈亚宁,李卫红,等.伊犁河谷苦豆子C,N,P含量变化及化学计量特征[J].生态学报,2018,38(17):6163-6170.

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