The change of soil nutrient elements during restoration succession processes of high mountain meadow in Na＇qu County, Tibet, was investigated. The results showed that with the trampling disturbance, the normal struct...The change of soil nutrient elements during restoration succession processes of high mountain meadow in Na＇qu County, Tibet, was investigated. The results showed that with the trampling disturbance, the normal structure of soil is violated, soil quality worsened, leading to soil erosion and nutrient loss. The recoverage of soil is lagged behind vegetation when change depends on elements of soil nutrient increase in mass. The content of total nitrogen, total phosphorus and total potassium changed accordingly with total nutrient, and is remarkably correlated to the content of organic matter. The content of available phosphorus is complex and changes with biomass and soil pH. The content of available potassium change was different from that of total nitrogen, total phosphorus and total potassium, and was increasing with trampiing, and the change was relatively little during successive stages.展开更多
基金Supported by the Plan of Tibet Autonomous Region State Ecological Safe Shelter Zone on the Tibet Plateau(2004CCA03600)Sichuan Agricultural University Creating Foundation (D00233100)
文摘The change of soil nutrient elements during restoration succession processes of high mountain meadow in Na＇qu County, Tibet, was investigated. The results showed that with the trampling disturbance, the normal structure of soil is violated, soil quality worsened, leading to soil erosion and nutrient loss. The recoverage of soil is lagged behind vegetation when change depends on elements of soil nutrient increase in mass. The content of total nitrogen, total phosphorus and total potassium changed accordingly with total nutrient, and is remarkably correlated to the content of organic matter. The content of available phosphorus is complex and changes with biomass and soil pH. The content of available potassium change was different from that of total nitrogen, total phosphorus and total potassium, and was increasing with trampiing, and the change was relatively little during successive stages.
