Division is the basis of forest resources survey and forestry map drawing.
区划是森林资源调查和林业用图制作的基础。
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In forestry, map also occupies an important position, the all levels forest division, forest planning, the forest resources inventory, the forest management inventory, felling series design etc.
Dispersion-managed soliton interaction is investigated in an optical time-division multiplexed system with random dispersion map by the variational approach and the numerical simulation.