Since the intensification of urbanization, it not only brought great economic benefits, but also the population explosion, excessive building density, terrible traffic jam, and other problems.

城市化进程的不断加剧，在产生巨大经济效益的同时，也带来了城市人口膨胀、建筑密度过大、交通严重堵塞、环境持续恶化等一系列的问题。

youdao

Economic threshold for this pest insect was estimated by measuring the increasement rate of population density.

并提出用害虫种群潜在密度确定卷叶螟经济阈值的方法。

youdao

On spatial, there are high pollutants concentrations in active economic areas with high density of population.

空间上，经济活跃、人口密集点污染物浓度高。

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Certainly sustained economic growth, low density and more affordable housing all clearly continue to push the center of population gravity toward certain Sun Belt cities, primarily in the Southeast and Texas.

FORBES: America's Fastest- and Slowest-Growing Cities

The risk of loss of lives and economic disaster in the southern Mediterranean is high due to strong population density along its coasts: around 150 million people concentrated in 46, 000 kms of coastline, 110 million of them living in cities bordering the sea and some 200 million tourists visiting the area every year.

UNESCO: Indigenous Peoples