植物生态学报 ›› 2014, Vol. 38 ›› Issue (5): 417-424.DOI: 10.3724/SP.J.1258.2014.00038
所属专题: 生物多样性
收稿日期:
2013-12-10
接受日期:
2014-03-03
出版日期:
2014-12-10
发布日期:
2014-05-13
通讯作者:
张荣
基金资助:
GAO Ben-Qiang,YUAN Zi-Qiang,WANG Bin-Xian,GAO Hui,ZHANG Rong()
Received:
2013-12-10
Accepted:
2014-03-03
Online:
2014-12-10
Published:
2014-05-13
Contact:
ZHANG Rong
摘要:
施肥和刈割分别对植物群落物种多样性和生产力有重要的影响。采用不同施肥水平和刈割频度, 研究了施肥和刈割对亚高山草甸植物群落物种多样性与生产力及其关系的影响。结果显示, 5年的施肥和刈割处理对群落地上生物量均有显著影响, 但对物种多样性影响不显著; 物种多样性与生产力之间的关系因施肥和刈割次数的不同而不同, 有负相关、二次函数关系和不相关等几种类型, 多数为不相关。此结果表明施肥和刈割并不总是一致性地影响群落物种多样性与生产力。因此, 不同施肥和刈割处理下的亚高山草甸植物群落生产力与物种多样性之间并没有确定的关系。
高本强,袁自强,王斌先,高慧,张荣. 施肥和刈割对亚高山草甸物种多样性与生产力及其关系的影响. 植物生态学报, 2014, 38(5): 417-424. DOI: 10.3724/SP.J.1258.2014.00038
GAO Ben-Qiang,YUAN Zi-Qiang,WANG Bin-Xian,GAO Hui,ZHANG Rong. Effects of fertilization and clipping on species diversity, productivity and their relationship in subalpine meadow. Chinese Journal of Plant Ecology, 2014, 38(5): 417-424. DOI: 10.3724/SP.J.1258.2014.00038
变异来源 Source of variation | 自由度 df | 地上生物量 Aboveground biomass | 物种数 Number of species |
---|---|---|---|
F | F | ||
刈割 Clipping | 2 | 144.403*** | 3.040* |
施肥 Fertilization | 2 | 31.521*** | 8.548*** |
年份 Year | 4 | 216.930*** | 121.041*** |
刈割×施肥 Clipping × Fertilization | 4 | 4.327** | 2.140ns |
刈割×年份 Clipping × Year | 8 | 2.851** | 0.727ns |
施肥×年份 Fertilization × Year | 8 | 0.879ns | 1.873ns |
刈割×施肥×年份 Clipping × Fertilization × Year | 16 | 0.432ns | 0.473ns |
表1 2008-2012年施肥、刈割和年份对亚高山草甸地上生物量和物种数的方差分析结果
Table 1 Summary of ANOVA on effects of fertilization, clipping and time on aboveground biomass and species number during 2008-2012
变异来源 Source of variation | 自由度 df | 地上生物量 Aboveground biomass | 物种数 Number of species |
---|---|---|---|
F | F | ||
刈割 Clipping | 2 | 144.403*** | 3.040* |
施肥 Fertilization | 2 | 31.521*** | 8.548*** |
年份 Year | 4 | 216.930*** | 121.041*** |
刈割×施肥 Clipping × Fertilization | 4 | 4.327** | 2.140ns |
刈割×年份 Clipping × Year | 8 | 2.851** | 0.727ns |
施肥×年份 Fertilization × Year | 8 | 0.879ns | 1.873ns |
刈割×施肥×年份 Clipping × Fertilization × Year | 16 | 0.432ns | 0.473ns |
图1 2008-2012年施肥和刈割对亚高山草甸地上生物量的影响(平均值±标准偏差)。不同字母表示处理间差异显著(p < 0.05)。
Fig. 1 Effects of fertilization and clipping on aboveground biomass during 2008-2012 (mean ± SD). Different letters indicate significant differences between treatments (p < 0.05).
图2 2008-2012年施肥和刈割对物种数的影响(平均值±标准偏差)。不同字母表示处理间差异显著(p < 0.05)。
Fig. 2 Effects of fertilization and clipping on species number during 2008-2012 (mean ± SD). Different letters indicate significant differences between treatments (p < 0.05).
图3 2008-2012年在不同的施肥和刈割处理下物种数和地上生物量的线性和二次项回归关系(n = 8)。同一处理下达到显著相关者给出了拟合直线或曲线。
Fig. 3 The linear and quadratic regression relationships between species number and aboveground biomass for different fertilization and clipping treatments during 2008-2012 (n = 8). The straight line or curve fitting is illustrated when the relationship between species diversity and productivity under the same treatment is significant (p < 0.05).
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