摘要
对拉林高等级公路以生态袋技术建植的护坡不同坡向植被和土壤特征进行测定,结果表明阴坡植被地上生物量和盖度明显高于阳坡,阴坡植被地上生物量和盖度随着坡度的增加而下降;护坡不同调查样地土壤有机质含量在2.95~14.83 g/kg之间,全氮含量在0.16~0.80 g/kg之间,全磷含量在0.25~0.62 g/kg之间,速效氮含量在0.67~8.27 mg/kg之间,均处于较低水平。相关分析表明,土壤有机质、速效钾含量与植被生物量呈极显著正相关,土壤pH值与植被盖度呈极显著负相关,土壤养分含量对植被特征的影响较大。因此,应及时采取养护管理措施,科学补充肥料,才能长期维持高等级公路护坡的生态稳定性和绿化美观效果。
The vegetation and soil characteristics of slope protection in different slop directions built by ecological bag technology on Lalin high-grade highway were measured by conventional method.The results showed that the aboveground biomass and coverage of the vegetation on shady slope were significantly higher than those of sunny slope,and the aboveground biomass and coverage of vegetation on the shady slope decreased with the increase of slope.The content of organic matter in slop protection soil was 2.95~14.83 g/kg,the content of total nitrogen was 0.16~0.80 g/kg,the content of total phosphorus was 0.25~0.62 g/kg,and the content of available nitrogen was 0.67~8.27 mg/kg,all of which were at a low level.The correlation analysis showed that the contents of soil organic matter and available potassium were significantly positively correlated with vegetation biomass,and the soil pH value was significantly negatively correlated with the vegetation coverage,and the soil nutrient content had a great impact on the vegetation characteristics.Therefore,maintenance and management measures should be taken in time and fertilizer should be supplemented scientifically,so as to maintain the ecological stability and greening aesthetic effect of high-grade highway slope protection for a long time.
作者
王明涛
高国荣
苗彦军
赵玉红
包赛很那
雷变霞
WANG Mingtao;GAO Guorong;MIAO Yanjun;ZHAO Yuhong;Baosaihenna;LEI Bianxia(Animal Science College,Tibet Agriculture&Animal Husbandry University,Nyingchi 860000,China;Yakeshi Rural Revitalization Promotion Center of Inner Mongolia Autonomous Region,Hulun Buir 022150,China;Nyingchi Guangdong Experimental School,Nyingchi 860000,China)
出处
《中国草地学报》
CSCD
北大核心
2023年第4期67-73,89,共8页
Chinese Journal of Grassland
基金
西藏自治区科技厅重点项目(XZ202001ZY00057G)
国家自然科学基金项目(U21A20240,U20A2050)。
关键词
高等级公路
生态袋
土壤养分
西藏
林芝
High-grade highway
Ecological bag
Soil nutrients
Tibet
Nyingchi
