A discussion rural economy sustainable development threshold in huai ' an city 論淮安市農(nóng)業(yè)經(jīng)濟(jì)可持續(xù)發(fā)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(fā)育起點(diǎn)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(fā)育起點(diǎn)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(tài)學(xué)的范疇界定了評(píng)價(jià)水資源可持續(xù)開發(fā)的新概念?開發(fā)度,建立了地表水體和地下水體開發(fā)度計(jì)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(jié)果表明,目前東江流域的水資源開發(fā)是可持續(xù)的,并對(duì)其在開發(fā)度范圍內(nèi)進(jìn)行了水資源合理配置和承載能力分析,提出只有調(diào)整用水結(jié)構(gòu)和產(chǎn)業(yè)結(jié)構(gòu),才能實(shí)現(xiàn)流域的可持續(xù)發(fā)展。