结果表明：木荷所受到的竞争强度随着林木径级的增大而逐渐减小。
The findings show that the intraspecific competition intensity in Shima superba decreases gradually with the increase in tree diameter.
木质包装材料中以木包装、木托及卡板中截获的有害生物为多，截获有害生物主要以线虫和林木害虫为主。
Exotic pests were found to be mainly carried by wood package materials, wood trays and boards, and nematodes and forest borers were the mainly pest species intercepted from imported SWPM.
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