草甸草原放牧场退化定量评估指标体系建立

闫瑞瑞,高娃,沈贝贝,张宇,王淼,朱晓昱,辛晓平

Index System for Quantitative Evaluation of Pasture Degradation in Meadow Grassland of Inner Mongolia

YAN RuiRui,GAO Wa,SHEN BeiBei,ZHANG Yu,WANG Miao,ZHU XiaoYu,XIN XiaoPing

表4 草甸草原放牧退化定量评估指标参考最大值

Table 4 The maximum reference value of quantitative evaluation index of grazing degradation in meadow grassland

指标 Factor 评估指标参考最大值 （Axn） 地上现存量Aboveground stock (kg·hm-2) 3400 盖度Coverage (%) 87 平均高度Average height (cm) 75 植物种数Plants species (种/m2) 50 枯落物量Amount of litter (kg·hm-2) 2600 退化指示植物比例 Degradation indicates plant proportion (%) 90 土壤有机碳含量Soil organic carbon (g·kg-1) 45 土壤容重Soil bulk (g·cm-3) 1.35