现浇网格护坡技术建设初期植物的生态适应性  

Ecological adaptability of plants in beginning period of slope protection by cast-in-situ grids

作　　者：梅雪梅[1] 高甲荣[1] 马岚[1] 王建军 王兵 郭凯力 张栋[1] 陈琼[1] 

机构地区：[1]北京林业大学水土保持学院,北京100083 [2]内蒙古和信源生态工程研发中心,呼和浩特010000 [3]北京沃尔德防灾绿化技术有限公司,北京100048

出　　处：《中国水土保持科学》2015年第5期79-85,共7页Science of Soil and Water Conservation

基　　金：北京市科技计划课题"怀柔小流域河岸带生态恢复技术研究"(Z151100001115001)

摘　　要：为探讨公路边坡上现浇网格护坡技术建设初期不同植物的生态适应性,以内蒙古自治区千里山公路为例,分别测定了现浇网格技术施工1个月、4个月和2年后网格内种植的4种典型乡土植物的保存率、株高、基径、枝条生物量、冠幅、地上生物量和地下生物量,运用主成分分析方法探讨了植物的生态适应性。结果表明:施工4个月后与施工1个月后相比胡枝子的保存率基本不变,而金叶莸、杨柴和柽柳的保存率均下降;施工2年后植物的保存率基本保持稳定,表现为胡枝子(92%)>金叶莸(85%)>杨柴(75%)>柽柳(73%);虽然不同植物的生长指标增量明显不同,但各生长指标增长速度总体表现为胡枝子、金叶莸均大于杨柴、柽柳;基径的变化与地上和地下生物量的变化之间呈显著正相关,相关系数分别为0.999和0.915,地上和地下生物量之间也呈显著正相关,相关系数为0.901,其他生长指标之间没有显著相关性;生态适应能力高低表现为:胡枝子>金叶莸>杨柴>柽柳。该研究结果可为内蒙古及类似地区的公路边坡植被建设和现浇网格技术的推广提供参考。Slope protection by cast-in-situ grids is a technique using reinforced concrete grids with shrub or grass to get the structures with some engineering and ecological functions,which contributes to stabilizing slope. In the Inner Mongolia Autonomous Region in China,a road slope in the Qianlishan Road by cast-in-situ grids was selected to determine ecological adaptability of different plants in the beginning period of the protection by cast-in-situ grids. Four bush plant species planted in the cast-in-situ grids were taken as the research object to analyze the ecological adaptability. The main characteristics of these plants were investigated in the first and fourth month and the second year after construction of castin-situ grids,including preserving rate,height,collar diameter,biomass of branch,crown width,underground biomass and aboveground biomass of plants,based on which their ecological adaptability was analyzed by principal component analysis method. The results showed that preserving rate of Lespedeza bicolor Turcz tended to remain stable,while those of other plant species decreased from the first to fourth month after construction of cast-in-situ grids. But preserving rate of the four bush plant species tended toremain stable in the second year after construction,and the order of preserving rate from high to low was：L. bicolor（ 92%）〉 Caryopteris clandonensis ‘Worcester Gold ＇（ 85%）〉 Hedysarum mongolicum Turez（ 75%） 〉Tamarix chinensis Lour（ 73%）. In addition,the four bush plant species had obviously fast growth speed,although the growth indexes increment of different local plants were significantly different during the research period. And the growth rate of growth indexes of Lespedeza bicolor and C.clandonensis ‘Worcester Gold＇was higher than those of H. mongolicum and T. chinensis. On the whole,compared with the other bush plant species,L. bicolor grew best. A significant positive correlation could be found between collar diameter and underground biomass,aboveground biomass,

关 键 词：现浇网格 公路边坡 生态适应性 护坡技术 

分 类 号：S157.1[农业科学—土壤学]