spatial and temporal dynamics of bark beetles in chinese white pine in qinling mountains of shaanxi province, china.spatial and temporal dynamics of bark beetles in single tree trunks of pinus armandi were studied in qinling mountains, shaanxi province, china. ten species of engraver bark beetles attacked from healthy to withered chinese white pines, but seven species were commonly detected every year in qinling forest ecosystem. dendroctonus armandi and hylurgops longipilis were common species at the lower of trunks, and ips acuminatus, polygraphus sinensis, and pityogenes japonicus primary distributed in th ...200718284736
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