减轻自然灾害系统工程初议

本文用大量数据阐述了我国主要自然灾害所面临的严峻形势;进而分析了减轻自然灾害的可能性和必要性;并从系统科学和综合研究的角度出发,提出了减轻自然灾害系统工程的任务和内容。     

陕西省近10年自然灾害的损失规律

本文主要根据自然灾害损失资料,对陕西近10a自然灾害损失时空规律、各灾种特点、损失结构进行了较详尽讨论,并进行了损失强度分区。     

Responses to natural and man-made hazards in Borno, Northeast Nigeria

This is a study of the responses of the people of eastern Borno to the twin hazards of drought and of an irrigation project stranded by the recent low level of Lake Chad. The environmental awareness of the people has been much influenced by access to information, particularly radio. There was a perceptual dissonance; drought is discerned as a natural act of God, but lake recession is seen as man-made. There is also a gap between responses perceived as appropriate and actual responses consequent on the constraints imposed by the process of modernization, notably the introduction of the South Chad Irrigation Project (SOP). Traditional response mechanisms involving the norm of reciprocity, the use of community resources, agricultural adaptations and sharing have become relatively insignificant in Borno. These are being replaced by emigration, lake floor cultivation and household diversification     

重庆颗粒物自然沉降分布与其显微镜下的物理特征

本文研究了重庆颗粒物自然沉降的分布规律;揭示了市区、郊区颗粒物在显微镜下的物理特征,为研究颗粒物对建筑物体的腐蚀提供了有力的依据。     

重庆城市创建山水园林城市的自然生态建设对策

山水园林城市是许多山地城市特色建构的目标。以重庆城市为例，认为山水园林城市的建设是城市物质空间与城市自然空间共同建设的结果，只有针对其自然生态特色提出性建设措施，才能确保城市物质空间建设与自然生态建设的协调。     

Multicystic dysplastic kidney: Natural history of prenatally detected cases

To delineate the natural history of fetal multicystic dysplastic kidneys (MDKs), all cases that were prenatally detected in the Prenatal Diagnosis Center of the University of Virginia from September 1985 to 31 August 1988 were reviewed. All patients were followed through the Center with serial ultrasound evaluations at approximately 4-week intervals, and each liveborn infant was evaluated and followed by one of the authors (S.S.H.) Of the 14 cases detected, ten were detected in the second trimester, the earliest at 16·5 weeks' gestation. Of the nine fetuses with non-lethal disease, there were two cases in which the lesion remained unchanged during observation. Both had an initial diagnosis in the third trimester. In those cases diagnosed in the second trimester (7), all showed an initial increase in the size and number of cysts, followed by involutional changes either in utero (2) or in the neonatal period (3). Two infants had immediate surgical removal of the MDK, one because of respiratory compromise, and the other because of an uncertain diagnosis on renal scan. Abnormalities of the contralateral kidney were found in 7 of 14 fetuses. Five were lethal conditions. Associated non-renal abnormalities were common in bilateral MDK (80 per cent), but rare in unilateral MDK (11 per cent).     

生态补偿机制的建立及补偿资金的筹集

中国经济的持续发展，资源和环境方面的矛盾日益显现，生态补偿机制可以解决自然资源受益人和受害者之间出现的“不公平”。生态作为补偿机制的首要问题是补偿金的筹集问题。     

基于WebGIS的吉林省自然保护区地理信息系统设计与实现

"吉林省自然保护区地理信息系统"是采用WebGIS技术体系建立的信息发布平台,通过这个平台实现了吉林省自然保护区信息在机关内部局域网上的共享和动态的、可视化的查询与发布.通过介绍该系统当中WebCIS平台的结构和功能,探讨了WebGIS在环境信息当中的应用模式.     

自然旅游地的生态环境问题及其持续发展探讨

自然旅游地是一个自然－人工复合生态系统，人类活动对它的影响很大。保护旅游资源和生态环境是旅游地持续发展的永恒主题，是旅游资源是以永续利用的基础和前提；加强旅游地生态建设和管理是旅游地持续发展的重要内容，突出旅游特色，兼顾多样性和创造性开发、挖掘旅游潜力、增加吸收力和竞争力是旅游地发展的活力所在。     

鲁西南粮棉产区生态控制农田害虫技术研究

根据生态类型区的农业生态现状，以种植结构调整为基础，发挥生态因素控制害虫作用为重点，充分利用害虫天敌，生物制剂的控害作用，必要时辅以化学防治调节，达到生态控制农作物害虫的目的。