historic flow 中文意思是什麼
historic flow
解釋
歷史流量-
The main process of regional ecological risk assessment includes 5 stages : regional analysis, risk receptor selection, risk sources analysis, exposure and hazard analysis, and integrated risk assessment. arming at flood, drought, storm tide, petroleum pollution accident and flow breaking in the lower huanghe river, the probability and distribution of each kind of risk sources are evaluated. the authors bring forward indexes and formulas to measure hazarded degree and risk value of ecosystem. by using remote sensing data, historic record, survey data and by means of geographical information system, regional ecological risk assessment is finished. on the basis of assessment result, the environmental risk management countermeasure of the huanghe river delta is advanced
以黃河三角洲為例進行了區域生態風險評價理論和方法的探討。針對黃河三角洲主要生態風險源洪澇乾旱風暴潮災害油田污染事故以及黃河斷流的概率進行了分級評價並提出度量生態損失與生態風險的指標和公式，分析了風險源的危害作用運用遙感資料歷史記錄調查數據和地理信息系統gis技術，完成了區域生態風險綜合評價在此基礎上提出黃河三角洲的區域生態風險管理對策。 -
Such problems as desertification 、 soil erosion 、 debris flow 、 landslide 、 garbage disposal 、 changes in ecological and geological environment 、 dispose of radioactive nuke rubbish 、 protection of famous historic and cultural sites are researched in this field
研究課題涉及到：沙漠化、水土流失、泥石流、滑坡、垃圾填埋處理、生態和地質環境的變遷、放射性核廢料的處理和名勝古跡的保護等。
分享友人