土壤肥力及其影响因素的尺度效应——以北京市平谷区为例

葛畅, 刘慧琳, 聂超甲, 沈强, 张世文

Scale effect of soil fertility spatial variability and its influencing factors

Chang GE, Huilin LIU, ChaoJia NIE, Qiang SHEN, Shiwen ZHANG

表3 各指标隶属度转折点取值

Table 3 Turning point value of subordination degree of fertility indicators

转折点 pH TN/(g/kg) AP/(mg/kg) AK/(mg/kg) CEC/(cmol/kg) SOM/(g/kg) AFe/(mg/kg) AZn/(mg/kg) AB/(mg/kg) x1 5.50 0.60 15.00 90.00 10.00 15.00 6.00 0.50 0.15 x2 6.50 1.10 40.00 180.00 25.00 30.00 16.00 3.00 1.00 x3 7.50 1.50 90.00 230.00 x4 8.50 2.40 160.00 260.00