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Table 2 The contribution of abiotic factors (Bio1–19, and human influence) to observed diversity, dark diversity, community completeness, and species pool for insect pests based on Boosted Regression Tree (BRT). The codes of abiotic factors were shown in Materials and Methods

From: Determinants of species assemblages of insect pests in alpine forest ecosystems of western China

Factor Observed diversity Dark diversity Community completeness Species pool
Bio1 7.214 9.109 6.683 7.494
Bio2 2.995 3.078 3.800 3.322
Bio3 7.900 4.862 9.952 6.142
Bio4 9.691 10.452 9.326 8.530
Bio5 7.364 7.709 9.687 6.403
Bio6 6.367 5.675 7.300 6.285
Bio7 4.808 3.616 4.527 4.720
Bio8 2.946 8.580 3.247 3.935
Bio9 6.882 7.807 5.694 7.993
Bio10 2.349 1.101 4.129 2.842
Bio11 6.358 8.200 4.393 5.426
Bio12 6.492 5.006 5.323 6.820
Bio13 3.460 2.718 2.505 2.828
Bio14 0.137 0.439 0.209 0.440
Bio15 5.977 5.570 6.064 5.612
Bio16 5.536 3.337 3.573 5.771
Bio17 1.209 0.575 1.319 0.963
Bio18 6.158 3.980 5.591 6.386
Bio19 0.687 0.191 0.987 0.604
HF 5.467 7.994 5.689 7.483