澜沧江流域水生昆虫群落分类多样性和功能多样性海拔格局的空间尺度依赖性

魏慧玉,陈凯,王备新

The spatial scale dependency of elevational patterns of taxonomic and functional diversity in aquatic insects in the Lancang River, Yunnan, China

Huiyu Wei,Kai Chen,Beixin Wang

表1 不同溪流等级采样点位环境因子概况

Table 1 Summary of environmental variables across sampling sites collected from second-, third-, and fourth-order streams

环境变量 Environmental variables 2级 Second order 3级 Third order 4级 Fourth order 平均值 ± 标准差 Mean ± SD 范围 Range 平均值 ± 标准差 Mean ± SD 范围 Range 平均值 ± 标准差 Mean ± SD 范围 Range 海拔 Elevation (m) 1,392 ± 719 528-3,146 1,451 ± 721 502-3,935 1,311 ± 569 595-2,899 水温 Water temperature (℃)* 15.46 ± 4.69 1.10-26.10 16.63 ± 5.05 6.80-28.00 19.33 ± 4.30 10.30-26.00 泥沙含量百分比 Percent of sand (%) 8.61 ± 16.20 0.00-100.00 7.62 ± 10.79 0.00-60.00 14.09 ± 16.69 0.00-70.00 碎石含量百分比 Percent of gravel (%) 32.49 ± 24.41 0.00-100.00 30.15 ± 20.38 5.08-87.93 36.71 ± 18.25 2.78-85.00 鹅卵石含量百分比 Percent of cobbles (%) 42.82 ± 21.40 0.00-81.82 45.52 ± 17.98 0.00-72.37 39.10 ± 19.30 0.00-68.06 大石块含量百分比 Percent of boulders (%) 16.08 ± 14.53 0.00-55.00 16.71 ± 14.25 0.00-60.00 10.10 ± 11.17 0.00-45.71 农业用地占比 Percent of agricultural land (%) 1.61 ± 4.73 0.00-32.01 0.91 ± 1.51 0.00-8.44 3.11 ± 3.49 0.02-15.90 森林用地占比 Percent of forest land (%) 82.32 ± 17.73 21.58-100.00 85.89 ± 12.33 41.38-100.00 83.77 ± 11.27 54.20-96.86