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A Comparison Study on the Biomass Allocation and Growth Increment of Caragana Microphylla Population at Southern and Northern Slope of Jing-wang Expressway Roadbed
Author(s): JING Hongwei1, DING Ning2, TIAN Yin3, WANG Yuan4(1.highwaydepartmentofshaanxiprovince, XI An, SHAAN Xi710068, china, 2.LOCAL Highwayadministrationofyulinmunicipality, yulin, SHAAN Xi719000, china, 3.COMMUNICATION Constructiongroupsofshaanxiprovince, XI An, SHAAN Xi710075, china, 4.JINGWANG Tollingadministrationdepartment, COMMUNICATION Constructiongroupsofshaanxiprovince, jingbian, SHAAN Xi718500, china)
Pages: 169-
172
Year: 2008
Issue:
4
Journal: Central South Highway Engineering
Keyword: 柠条; 生长量; 生物量分配; 生态适应对策; 不同坡向;
Abstract: 以靖王高速路基南、北边坡的柠条种群为对象,依据样地调查结果,通过生长量、生物量及其分配等指标的对比分析,试图揭示坡向对种群生长的影响以及种群对不同坡向的生态适应对策。结果表明,北坡的土壤含水量、种群生长量及生物量显著高于南坡种群,而同一坡向种群之间没有显著差异。同时,种群通过生物量分配调节对坡向差异做出响应。在水分条件较差的南坡,种群将更多的生物量投资于地下部分生长,以利于获取更多的土壤水分资源;在水分条件较好的北坡,种群将更多的生物量投资于地上部分生长,以利于对已占据生境的巩固和利用。
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