Total aboveground plant biomass is more strongly affected by climate than species diversity on a grassland in Liaoning, China

Total aboveground plant biomass is more strongly affected by climate than species diversity on a grassland in Liaoning, China
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中国辽宁草原地上植物总生物量受气候影响大于物种多样性

DOI:
10.32604/phyton.2016.85.125
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发表时间:
2016-06
影响因子:
1.7
通讯作者:
Yang Y F
Yang Y F
中科院分区:
生物学4区
文献类型:
--
作者:
Zhou C;Busso C;Liu J;Yang Y G;Sun Y;Fang Y Z;Zhang Q Q;Zhou Y B;Wang Y N;Zhang Z;Wang Z W;Yang Y F

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本研究的目的是分析海拔高度、经纬度、年平均气温、年平均降水量和物种多样性与地上植物总生物量的关系。采用简单的线性回归分析来研究这些关系。结果表明,海拔高度与植物地上总生物量呈极显著正相关(R2= 0.038, P<0.01)。同时,随着经度(R2= 0.124, P<0.001)和纬度(R2= 0.221, P<0.001)的增加,地上总生物量减少。生物量与年平均降水量呈显著的正线性关系(R2= 0.149, P<0.001)。年平均气温与生物量呈显著负相关(R2= 0.145, P<0.001)。物种多样性与生物量的关系显著,但与气候变量的关系相对较弱(R2<0.063, P<0.05)。也就是说,物种多样性对地上植物生物量总变异的解释不足7%。这一结果与物种多样性变化时生态系统功能发生变化的特质响应假说一致,但由于单个植物物种的作用是复杂多变的,因此这些变化的幅度和方向是不可预测的。
The objective of this study was to analyze the relationshipsbetween total aboveground plant biomass versus altitude, latitude,longitude, mean annual temperature, mean annual precipitation,and species diversity. Simple linear regression analysis was usedto study these relationships. Results showed that altitude was significantly,positively (R2= 0.038, P<0.01) related with total plant abovegroundbiomass. Meanwhile, when longitude (R2= 0.124, P<0.001)and latitude (R2= 0.221, P<0.001) increased, total aboveground biomassdecreased. The relationship between biomass and mean annualprecipitation was significantly, positively linear (R2= 0.149, P<0.001).Mean annual temperature was significantly, negatively correlatedwith biomass (R2= 0.145, P<0.001). The relationship between speciesdiversity and biomass was significant, but relatively weaker (i.e.,R2<0.063, P<0.05) compared with those for the climatic variables.This is, species diversity explained less than 7% of the total variabilityin total aboveground plant biomass. This result agrees with theidiosyncratic response hypothesis which suggests that ecosystem functionchanges when species diversity changes, but the magnitude anddirection of these changes are unpredictable because the roles of individualplant species are complex and varied.
DOI: 10.1007/bf00344971
发表时间: 1981-09
期刊: Oecologia
影响因子: 2.7
作者:
S. Oberbauer;W. D. Billings
通讯作者: S. Oberbauer;W. D. Billings
DOI: 10.1111/j.0906-7590.2003.03604.x
发表时间: 2003-12
期刊: Ecography
影响因子: 5.9
作者:
J. Lundholm;D. Larson
通讯作者: J. Lundholm;D. Larson
DOI: 10.1111/j.1600-0587.2012.07903.x
发表时间: 2013-03
期刊: Ecography
影响因子: 5.9
作者:
R. Virtanen;J. Grytnes;J. Lenoir;M. Luoto;J. Oksanen;L. Oksanen;Jens‐Christian Svenning
通讯作者: R. Virtanen;J. Grytnes;J. Lenoir;M. Luoto;J. Oksanen;L. Oksanen;Jens‐Christian Svenning
DOI: 10.2307/3899515
发表时间: 1988-11-01
期刊: JOURNAL OF RANGE MANAGEMENT
影响因子: --
作者:
ELLIS, JE;SWIFT, DM
通讯作者: SWIFT, DM
DOI: --
发表时间: 1973-12
影响因子: 8.7
作者:
J. P. Grime
通讯作者: J. P. Grime