河北坝上地区不同坡向植物根系分布特征研究  

Research on Root Distribution Characteristics of Vegetation on Different Slope Aspects in Bashang Region of Hebei Province

作　　者：王诗楠 张卓栋[1] 韩玥[1] 贾颖芳 

机构地区：[1]北京师范大学地理学与遥感科学学院,北京100875

出　　处：《水土保持研究》2014年第2期152-157,共6页Research of Soil and Water Conservation

基　　金：国家自然科学基金项目(41301282);国家基础科学人才培养基金项目(J1103403);中央高校基本科研业务费专项资金

摘　　要：植物的根系分布特征具有重要的生态意义,能够反映植物适应和改变环境的能力,且根系的固持水土作用明显。采用根钻法研究了河北坝上地区不同坡向植物的根系分布特征。结果表明,河北坝上地区植物的根系分布特征在不同坡向表现出明显差异。各个坡向根系生物量与土层深度的回归关系式的系数各不相同。北坡的根系生物量明显大于南坡、西坡和东坡,北坡的草原植物较之其他坡向具有更大的生长潜势,水土保持的作用也更为明显。Root distribution characteristics of vegetation have a significant impact on ecological environment and reflect the vegetation ability of adapting to the environment. Root systems can also conserve the soil and water effectively. Soil drilling method was used for investigation of root distribution characteristics of vegetation on different slopes in Bashang Region, Hebei Province. The results indicate that there are obvious differences in the root distribution characteristics on different slopes. The coefficients of the regression equa tion of root biomass and soil depth on four slopes are different. Root biomass of the northern aspect slope is significantly larger than that of the southern, western and eastern aspect slopes. The vegetation on the northern aspect slope has greater growth potential than that on other slopes and so has stronger ability of soil and water conservation.

关 键 词：根系分布特征 坡向 根钻法 河北坝上地区 水土保持 

分 类 号：Q944.54[生物学—植物学] Q948.114