不同养分添加对草地群落优势植物叶片化学计量特征的影响
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摘要
为了解不同养分添加对草地群落的影响,通过人工添加氮肥、磷肥、钾肥模拟试验,研究不同施肥水平下植物叶片碳(C)、氮(N)、磷(P)元素含量及植物C∶N、C∶P、N∶P、C∶N∶P化学计量比的变化特征。结果表明:不同养分添加后,裂叶蒿和展枝唐松草双子叶植物较羊草、贝加尔针茅、日阴菅单子叶植物能更好地吸收肥料中的养分,双子叶植物比单子叶植物具有较高的C、N、P的储存能力。
In order to understand the effects of different nutrient additions on the grassland community,simulated experiments of artificial addition of nitrogen,phosphate and potassium fertilizers were conducted to study the changes in element contents of carbon(C),nitrogen(N) and phosphorus(P) in plant leaves and the stoichiometric ratios of plant C∶N,C∶P,N∶P and C∶N∶P under different fertilization levels. The results showed that the dicotyledonous plants Artemisia laciniata and Thalictrum squarrosum could better absorb the nutrients in fertilizer than monocotyledonous Leymus chinensis,Stipa baicalensis and Carex pediformis,and the dicotyledonous plants had higher storage.
In order to understand the effects of different nutrient additions on the grassland community,simulated experiments of artificial addition of nitrogen,phosphate and potassium fertilizers were conducted to study the changes in element contents of carbon(C),nitrogen(N) and phosphorus(P) in plant leaves and the stoichiometric ratios of plant C∶N,C∶P,N∶P and C∶N∶P under different fertilization levels. The results showed that the dicotyledonous plants Artemisia laciniata and Thalictrum squarrosum could better absorb the nutrients in fertilizer than monocotyledonous Leymus chinensis,Stipa baicalensis and Carex pediformis,and the dicotyledonous plants had higher storage.
引文
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[14]任书杰,于贵瑞,陶波,等.中国东部南北样带654种植物叶片氮和磷的化学计量学特征研究[J].环境科学,2007(12):2665-2673.
[15]WILLEM G,BRAAKHEKKE,DANNY A P,et al. The resource balance hypothesis of plant species diversity in grassland[J]. Journal of Vegetation Science,1999(4):197-200.
[16]张丽霞,白永飞,韩兴国. N∶P化学计量学在生态学研究中的应用[J].植物学报,2003(9):1009-1018.
[17]VANNI M J,FLECKER A S,HOOD J M,et al.Stoichiometry of nutrient recycling by vertebrates in a tropical stream:linking biodiversity and ecosystem function[J]. Ecology Letters,2002(5):285-293.
[2] ELSER J J,STERNER R W,GOROKHOVA E,et al.Biological stoichiometry from genes to ecosystems[J].Ecology Letters,2000(3):540-550.
[3] ELSER J J,ACHARYA K,KYLE M,et al.Growth ratestoichiometry couplings in diverse biota[J]. Ecology Letters,2003(6):936-943.
[4]贺金生,韩兴国.生态化学计量学:探索从个体到生态系统的统一化理论[J].植物生态学报,2010,34(1):2-6.
[5]曾德慧,陈广生.生态化学计量学:复杂生命系统奥秘的探索[J].植物生态学报,2005,29(6):1007-1019.
[6]陆景陵.植物营养学(上册)[M].北京:中国农业大学出版社,2003.
[7]银晓瑞,梁存柱,王立新,等.内蒙古典型草原不同恢复演替阶段植物养分化学计量学[J].植物生态学报,2010,34(1):39-47.
[8]高三平,李俊祥,徐明策,等.天童常绿阔叶林不同演替阶段常见种叶片N、P化学计量学特征[J].生态学报,2007,27(3):947-952.
[9]韩文轩,吴漪,汤璐瑛,等.北京及周边地区植物叶的碳氮磷元素计量特征[J].北京大学学报(自然科学版),2008(5):855-860.
[10]陈伏生,胡小飞,葛刚.城市地被植物麦冬叶片氮磷化学计量比和养分再吸收效率[J].草业学报,2007(8):47-54.
[11]李禄军,曾德慧,于占源,等.氮素添加对科尔沁沙质草地物种多样性和生产力的影响[J].应用生态学报,2009,20(8):1838-1844.
[12]曹翠玲,李生秀,苗芳.氮素对植物某些生理生化过程影响的研究进展[J].西北农业大学学报,1999,27(4):96-101.
[13]宋彦涛,周道玮,李强,等.松嫩草地80种草本植物叶片氮磷化学计量特征[J].植物生态学报,2012,36(3):222-230.
[14]任书杰,于贵瑞,陶波,等.中国东部南北样带654种植物叶片氮和磷的化学计量学特征研究[J].环境科学,2007(12):2665-2673.
[15]WILLEM G,BRAAKHEKKE,DANNY A P,et al. The resource balance hypothesis of plant species diversity in grassland[J]. Journal of Vegetation Science,1999(4):197-200.
[16]张丽霞,白永飞,韩兴国. N∶P化学计量学在生态学研究中的应用[J].植物学报,2003(9):1009-1018.
[17]VANNI M J,FLECKER A S,HOOD J M,et al.Stoichiometry of nutrient recycling by vertebrates in a tropical stream:linking biodiversity and ecosystem function[J]. Ecology Letters,2002(5):285-293.