A discussion rural economy sustainable development threshold in huai ' an city 論淮安市農業經濟可持續發展的臨界值
The development threshold temperature and effective accumulative temperature for whole generation were 6 . 68 and 742 . 97 day - degrees , respectively 花翅搖蚊的世代發育起點溫度和有效積溫分別為6 . 68和742 . 97d ? 。
The initial development threshold temperature and effective accumulated temperature of whole generation were determined as 8 . 40 and 456 . 09 , respectively 全世代的發育起點溫度和有效積溫分別為8 . 40和456 . 09日度。
The concept of development threshold is defined from the angle of ecology , that is a new model evaluated water sustainable development , and its characteristics are analyzed 從生態學的范疇界定了評價水資源可持續開發的新概念?開發度,建立了地表水體和地下水體開發度計算模型。
At the same time , at the agent of its development threshold , water resources has been allocated , and carrying capacity is evaluated . at last , by the analysis of the results of allocation and carrying capacity , the structures of use water and industry must be adjusted , then , the sustainable development of dongjiang basin will be realized 研究結果表明,目前東江流域的水資源開發是可持續的,并對其在開發度范圍內進行了水資源合理配置和承載能力分析,提出只有調整用水結構和產業結構,才能實現流域的可持續發展。