青海省天然游憩草地耐践踏性研究  

Studies on traffic tolerance of natural recreational turf in Qinghai Province

作　　者：唐红[1] 孙吉雄[1] 李福源 胡文忠 陈建宁 

机构地区：[1]甘肃农业大学,甘肃兰州730070 [2]青海省大通县东峡林场,青海大通810100 [3]青海省农技推广总站,青海西宁810102

出　　处：《草业科学》2008年第11期103-110,共8页Pratacultural Science

基　　金：甘肃省自然科学基金暨中青年科技基金项目(YS021-A21-001)

摘　　要：通过实施践踏胁迫试验,对青海省天然游憩草地进行了耐践踏性研究,综合践踏胁迫下草地表观质量、各草种生长状况及叶绿素含量的变化分析,确定了高山草甸类游憩草地适应轻度及中度践踏,对重度践踏抗性差。群落内各草种对践踏胁迫存在耐性差异,冰草Agropyron cristatum、平车前Plantago major、冷地早熟禾Poa crymophila耐践踏性强;优势种鹅绒委陵菜Potentilla anserine耐践踏能力适中,是决定草地整体耐践踏能力的关键草种。短期践踏胁迫对土壤容重影响小,草地恢复能力较强。重度践踏可引起群落结构的改变,影响草地生态系统的稳定性。The traffic tolerance of the natural recreational turf in Qinghai Province was studied through traffic stress experiment. Based on the comprehensive analysis of natural turf with apparent quality, growth performance and chlorophyll content, it could be concluded that the alpine meadow as recreational turf was suitable for light or moderate traffic stress. The resistance of recreational turf to heavy traffic stress was poor. The grasses in the community showed different resistance to traffic stress, in which, Plantago depressa , Agropyron cristatum and Poet crymophila performed stronger traffic tolerance. The dominant species, Potentilla anserin, shown moderate traffic tolerance ability, and the general capacity of traffic resistance of community was decided by this dominant species. Short--term traffic stress had less influence on the soil bulk density and the turf could recover soon. Heavy traffic stress could cause the structure change of the turf community and even the stability of turf ecosystem.

关 键 词：耐践踏性 天然游憩草地 高山草甸 青海省 

分 类 号：S688.4[农业科学—观赏园艺]