摘要
为揭示不同竹种对采煤沉陷区土壤环境的适应能力,研究了山东省肥城市石横镇采煤沉陷区百竹园4个竹种的根系功能性状及其与土壤理化特性的关系。结果表明:(1)土壤含水率和速效钾含量均与根长密度、根表面密度存在显著正相关,与根组织密度呈显著负相关(P<0.05);pH值、有机质含量与比根长、比表面积存在显著正相关,与根组织密度、平均根直径呈显著负相关(P<0.05)。(2)淡竹竹根系总根长密度(737.784 m·m^(-3))、根表面积密度(1.121 m^(2)·m^(-3))均为最大,表明淡竹吸收养分与水分的能力最强;金镶玉竹根系的比根长(5.213 m·g^(-1))与比表面积(66.214 cm^(2)·g^(-1))最大,表明其资源获取速率最强;其中淡竹通过高根组织密度和低比根长获取资源的策略适应土壤环境。(3)根系生物量与根长密度、根表面密度呈显著正相关(P<0.05),淡竹根系总生物量显著大于其他竹种,可见淡竹通过增加根系生物量和密集鞭根网络系统可抑制采煤沉陷区土壤侵蚀。
In order to reveal the adaptability of different bamboo species to soil environment in coal mining subsidence area,the root functional characters of four bamboo species and their relationship with soil physical and chemical properties were studied in Baizhu Garden in coal mining subsidence area of Shiheng Town,Feicheng City,Shandong Province.The results showed:(1)Soil moisture content and available potassium content were significantly and positively correlated with root length density and root surface density,but significantly and negatively correlated with root tissue density(P<0.05).pH value and organic matter content were significantly and positively correlated with specific root length and specific root surface area,but significantly and negatively correlated with root tissue density and average root diameter(P<0.05).(2)The total root length density(737.784 m·m^(-3))and root surface area density(1.121 m^(2)·m^(-3))of Phyllostachys glauca were the highest,indicating this bamboo species had the strongest ability to absorb nutrients and water.The specific root length(5.213 m·g^(-1))and specific root surface area(66.214 c m^(2)·g^(-1))of Phyllostachys aureosulcata‘Spectabilis’were the largest,indicating the highest resource acquisition rate.The high root tissue density and low specific root length can be the resource acquisition strategy of Phyllostachys glauca as it′s adapted to the soil environment.(3)There was a significant positive correlation between root biomass and root length density or root surface density(P<0.05).Total root biomass of Phyllostachys glauca was significantly higher than that of the other bamboo species.It was concluded that Phyllostachys glauca could control soil erosion in coal mining subsidence area by increasing root biomass and dense root network system.
作者
王杰慧
李丹
张伟丽
李旭东
张忠峰
李霞
张仲超
赵红霞
WANG Jie-hui;LI Dan;ZHANG Wei-li;LI Xu-dong;ZHANG Zhong-feng;LI Xia;ZHANG Zhong-chao;ZHAO Hong-xia(College of Agronomy and Agricultural Engineering,Liaocheng University,Liaocheng 252059,Shandong,China;College of Innovation and Entrepreneurship,Shandong Agriculture and Engineering University,Jinan 250100,Shandong,China;Shandong Xingrun Landscape&Ecology Share Co.,Ltd.,Feicheng 271600,Shandong,China)
出处
《竹子学报》
2022年第3期72-79,共8页
Journal of Bamboo Research
基金
聊城大学博士科研启动基金(31805)
横向课题(K20LD2201)。
关键词
采煤沉陷区
根系功能性状
形态特征
土壤因子
竹种
Coal mining subsidence area
Root functional character
Morphological characteristics
Soil factor
Bamboo species
