岩石边坡植被恢复初期土壤养分特征及其影响因素.pdfVIP

第 33 卷第 3 期 水土保持通报 Vo 1. 33 , No.3 2013 年 6 月 Bulletin of Soil and Water Conservation Jun. , 2013 岩石边坡植被恢复初期土壤养分特征及其影晌因素 马帅帅1 ，王英宇2 ，宋桂龙1 ，徐洪雨1 ，王峰2 ，刘小鸿2 (1.北京林业大学草坪研究所，北京 100083; 2. 北京市京石园林绿化有限公司，北京 100026) 摘 要:以北京 承德(简称京承)高速公路。期)边坡 3 a 恢复期植被为研究对象，对土壤养分状况进行 了调研，并分析了影响养分变化的主要因素。结果表明，pH 值绝大部分在 6.5 左右，86.73% 边坡的有机 质含量和 88.78%边坡的全氮含量都处于中上水平，90.82% 边坡的速效磷含量处于较丰富水平，73.74% 边坡的速效御含量处于中下水平，表明在目前施工技术及养护条件下，速效何成为植物生长的关键养分因 子。影响因素中，坡质、坡向和施工工艺对基质养分含量影响较大。 关键词:京承 3 期高速公路;边坡;植被恢复;养分特征 文献标识码:A 文章编号: 1000-288X(2013)03-0024-05 中国分类号: S688.4 Soil Nutrient Characteristics and Their Influence Factors in Vegetation Restoration on Rocky Slope MA Shuai-shuai1 , W ANG Ying-yu2 , SONG Gui-long1 , XU Hong-yu 1 , W AN G-Feng2 , LIU Xiao-hong2 (1. Key Institute 01 Tur1grass Science , Beijing Forestry University , Beijing 100083 , China; 2. Beijing ] ingshi Landscaρing Co. , Ltd , Beijing 100026 , China) Abstract: Regarding the vegetation recovered for 3 years on Beijing-Chengde third-phase freeway slopes as the study object , we conducted an investigation of soil nutrient status and analyzed the main factors affecting soil nutrients. Results showed that soil pH values were mostly about 6. 5; soil organic matter contents on 86.73% of the slopes and total nitrogen contents on 88. 78% of the slopes , in upper level; available phos phorus contents on 90. 82 % of the slopes , in rich level; and available potassium contents on 73. 74% of the slopes , in low-middle leve l. This indicated that available phosphorus was the key nutrient factor for plant growth undere the current construction techni