The environmental capacity is referred to the maximum value of pollutant accommodated by environmentalunit in the designated area, and it is an important environmental resource.
环境容量是指在特定的区域内，环境单元所允许承纳的污染物的最大量，是一种重要的环境资源。
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The forest management unit level indicators depend on local, often site-specific, environmental factors such as forest type and topography, local economic and social considerations and priorities.
Coal contains less energy per unit of weight than weight than natural gas or oil; it is difficult to transport, and it is associated with a host of environmental issues, among them acid rain.