Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density.
早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量，进而间接地使鞘蛾种群密度降低。
Because of its vast tracts of virtually uninhabited northern forest, Canada has one of the lowest population density in the world.
加拿大是世界上人口密度最低的地区之一，因为其广阔的北方森林地区实际上无人居住。
To accommodate the rapid influx of population, city council plans to encourage high density housing in its town centre area which lies between Blundell and Bridgeport on both sides of No. 3 Road.
为了容纳快速涌入的人口，市议会计划鼓励在市中心地区第三大道边上的布伦德尔和布里奇波特之间建造高密度地住宅。
Many environment mathematical models are ordinary differential equations where time is considered only as its effect on population density.
许多环境数学模型是用常微分方程表示的，它只考虑了时间对种群密度的影响。
Its aggregation degree increased with the increase of population density.
分布的聚集强度与密度有关，随种群密度的升高而增大。
As the city struggles to accommodate its highest population in history, past efforts to control density coupled with economic hardships have led to infrastructure surpluses and abandoned buildings.
随着城市努力适应历史上的最高人口，过去对于控制人口密度及经济困难的努力，导致基础设施过剩以及大量的废弃建筑物的产生。
As the city struggles to accommodate its highest population in history, past efforts to control density coupled with economic hardships have led to infrastructure surpluses and abandoned buildings.
随着城市努力适应历史上的最高人口，过去对于控制人口密度及经济困难的努力，导致基础设施过剩以及大量的废弃建筑物的产生。
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