不同海拔对戴云山黄山松林土壤速效养分和微生物生物量的影响
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摘要
黄山松(Pinus taiwanensis)是亚热带中山地区气候变化研究的热点物种之一,本研究以中亚热带戴云山不同海拔黄山松林1300 m、1450 m、1600 m为研究对象,探究不同海拔对土壤速效养分和微生物生物量的影响。结果表明:在淋溶层和沉积层(A层和B层)土壤速效养分和微生物生物量变化趋势基本一致,具有一定的海拔梯度特征。可溶性有机氮、硝态氮和铵态氮随海拔梯度呈驼峰型,1450 m海拔均高于1300 m和1600 m海拔。随海拔升高,有效磷含量显著增加。微生物生物量随海拔梯度也呈驼峰型,1450 m海拔均显著高与1300 m和1600 m海拔。这表明土壤速效养分和微生物生物量含量的空间分布规律与其分布的海拔高度密切相关。
Pinus taiwanensis is a species for the hot topic study of the subtropical mid-mountain climate change. P.taiwanensis with different elevations of 1300 m, 1450 m, 1600 in the central subtropical Daiyunshan mountain were taken as the study object to explore different elevations effecting soil available nutrients and microbial biomass. The results showed that the variation trend of soil available nutrients and microbial biomass in eluvial horizon and illuvial horizon(layer A and B) was basically the same, with certain elevation gradient characteristics. Soluble organic nitrogen, nitrate nitrogen and ammonium nitrogen showed a hump with the altitude gradient, and that of the altitude of 1450 m was higher than that of 1300 m and 1600 m. The content of available phosphorus increased significantly with elevations. The microbial biomass also presented hump type with the elevation gradient. The elevation of 1450 m was significantly higher than that of1300 m and 1600 m. This indicated that the spatial distribution of available nutrients and microbial biomass in soil was closely related to the elevation.
Pinus taiwanensis is a species for the hot topic study of the subtropical mid-mountain climate change. P.taiwanensis with different elevations of 1300 m, 1450 m, 1600 in the central subtropical Daiyunshan mountain were taken as the study object to explore different elevations effecting soil available nutrients and microbial biomass. The results showed that the variation trend of soil available nutrients and microbial biomass in eluvial horizon and illuvial horizon(layer A and B) was basically the same, with certain elevation gradient characteristics. Soluble organic nitrogen, nitrate nitrogen and ammonium nitrogen showed a hump with the altitude gradient, and that of the altitude of 1450 m was higher than that of 1300 m and 1600 m. The content of available phosphorus increased significantly with elevations. The microbial biomass also presented hump type with the elevation gradient. The elevation of 1450 m was significantly higher than that of1300 m and 1600 m. This indicated that the spatial distribution of available nutrients and microbial biomass in soil was closely related to the elevation.
引文
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[3]郑世群,刘金福,黄志森,等.戴云山罗浮栲林主要乔木树种营养生态位研究[J].热带亚热带植物学报,2012,20(2):177-183.
[4]林开淼,徐建国,李文周,等.戴云山黄山松林森林群落类型分类及环境梯度解释[J].内蒙古林业调查设计,2018,41(6):51-58.
[5] Zhang M,Zhang X K,Liang W J,et al.Distribution of soil organic carbon fractions along the altitudinal gradient in Changbai Mountain,China[J].Pedosphere,2011,21(5):615-620.
[6] Fierer N,Mccain C M,Meir P,et al.Microbes do not follow the elevational diversity patterns of plants and animals[J].Ecology,2011,92(4):797-804.
[7] Gaston K J.Global patterns in biodiversity[J].Nature,2000,405(6783):220-227.
[8]卫云燕,尹华军,刘庆,黎云祥.气候变暖背景下森林土壤碳循环研究进展[J].应用与环境生物学报,2009,15(6):888-894.
[9] Janssens F,Peeters A,Tallowin J,et al.Relationship between soil chemical factors and grassland diversity[J].Plant and Soil,1998,202(1):69-78.
[10] Wijesinghe DK,John EA,Hutchings MJ.Does pattern of soil resource heterogeneity determine plant community structure? An experimental investigation[J].Journal of Ecology,2005,93(1):99-112.
[11]袁磊,李文周,陈文伟,等.戴云山国家级自然保护区大气氮沉降特点[J].环境科学,2016,37(11):4142-4146.
[12]鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,1999.
[13]赵盼盼,周嘉聪,林开淼,等.海拔梯度变化对中亚热带黄山松土壤微生物生物量和群落结构的影响[J].生态学报,2019(6):1-10
[14] García-Palacios P,Vandegehuchte M L,Shaw E A,et al.Are there links between responses of soil microbes and ecosystem functioning to elevated CO2,N deposition and warming? A global perspective[J].Global Change Biology,2015,21(4):1590-1600.
[15]胡嵩,张颖,史荣久,等.长白山原始红松林次生演替过程中土壤微生物生物量和酶活性变化[J].应用生态学报,2013,24(2):366-372.
[16]胡宗达,刘世荣,史作民,等.川滇高山栎林土壤氮素和微生物量碳氮随海拔变化的特征[J].林业科学研究,2012,25(3):261-268.
[17] Powlson D S,Prookes P C,Christensen B T.Measurement of soil microbial biomass provides an early indication of changes in total soil or ganic matter due to straw incorporation[J].Soil Biology and Biochemistry,1987,19(2):159-164.
[18] Lovell R D,Jarvis S C,Bardgett R D.Soil microbial biomass and activity in long-term grassland:effects of management changes[J].Soil Biology and Biochemistry,1995,27(7):969-975.