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.
森林管理单位级指标以地方的、往往是具体地点的环境因素为制定依据,如森林类型和地形、地方经济和社会考虑及重点等。
The current status of research on the adaptive response induced by low level exposures to environmental agents is briefly described.
简要叙述了低水平环境因子诱导适应性反应的研究现状。
The survey of natural radionuclide contents in soil in China(1983—1990)is a part of investigation of environmental natural radioactivity level on China.
中国土壤中天然放射性核素含量调查(1983—1990年)是中国环境天然放射性水平调查研究的一部分。
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