Title

不同植物根系对土壤抗冲性的影响

Translated Titles

Effect of Different Plant Roots on Soil Anti-scourbility

Authors

徐文远(Wen-Yuan Xu);王晓春;刘德海

Key Words

根系 ; 土壤抗冲性 ; 生物量 ; Roots ; Soil anti-scourbility ; Biomass

PublicationName

安徽農業科學

Volume or Term/Year and Month of Publication

39卷4期(2011 / 02 / 01)

Page #

2155 - 2157+2160

Content Language

簡體中文

Chinese Abstract

[目的]研究不同植物根系对土壤抗冲性的影响。[方法]采用改进的原状土冲刷水槽法,探讨了不同雨量、不同坡度下,4种植物的土壤抗冲性与根系生物量的关系。[结果]在小雨冲刷下,不同植物上层土壤的抗冲性和根系生物量随着坡度的增大而增强,而下层土壤表现出相反趋势;中雨冲刷下,丁香对上层土壤抗冲性的影响较大,而丁香、红瑞木下层土壤的抗冲性和根系生物量随着坡度的增加而减小;大雨冲刷下,不同植物上层土壤的抗冲性基本上随着坡度的增大逐渐增强,而根系生物量呈相反趋势,在下层土壤中其表现规律不一致。另外,土壤抗冲性与根系生物量密切相关,中雨、大雨冲刷下土壤抗冲指数与根系生物量的相关性明显高于小雨冲刷下。[结论]不同植物根系对土壤抗冲性有明显影响,可为水土流失区的植被修复提供科学依据。

English Abstract

[Objective] The effect of plant roots on soil anti-scourbility was studied. [Method] By means of flume method for original soil, the relationship between soil anti-scourbility and root biomass was studied under different precipitations and slopes. [Result] Affected by light rain, surface soil anti-scourbility and root biomass enhanced with the increase of slope, with the contrary trend in subsoil; under moderate rain, clove had greater effect on surface soil anti-scourbility, while the subsoil anti-scourbility and root biomass of Cornus alba and Syringa oblata went down with the increase of slope; under heavy rainfall, surface soil anti-scourbility improved with the increase of slope, with the contrary trend in subsoil, but there was no inconsistent change in subsoil. In addition, soil anti-scourbility was closely related to root biomass, and the correlation of subsoil anti-scourbility and root biomass under moderate heavy rainfall was obviously higher than that of light rain. [Conclusion] Plant roots had enhancement effect on soil anti-scourbility, which can provide scientific basis for vegetation restoration in soil erosion area.

Topic Category 生物農學 > 農業
生物農學 > 森林
生物農學 > 畜牧
生物農學 > 漁業