Public perceptions of ecosystem services and preferences for design scenarios of the flooded bank along the Three Gorges Reservoir: Implications for sustainable management of novel ecosystems

The newly formed extensive flooded land associated with the Three Gorges Reservoir hold great potentials to provide ecosystem services (ESs) for surrounding cities and communities. Conflicting values and conventional management strategies may complicate and inhibit broad-scale decision-making for this novel ecosystem. Public attitudes are a crucial influence in the way this process plays out. This study was conducted to assess how the reservoir bank is perceived by the general public of Chongqing Municipality in terms of importance of riparian ESs, and preference for corresponding landscape design styles through photo-questionnaire interviewing. Although Chongqing citizens know little of the “ecosystem services” concept, they do recognise riparian environmental and ecological benefits especially the bank protection and pollution interception functions, while benefits of habitats for wildlife and flood attenuation were of less concern. Recreational values were least appreciated, which is inconsistent with other studies. This may be attributed to a wider, intensive environmental education in various social media in today’s China. But publicity has been dominated by toxic air, water and soil pollution control rather than the benefits of nature conservation and personal contact with nature. In line with recognition of ESs, there is quite strong preference for the forested design scenario and particularly vegetation components across the socio-demographic spectrum. Overall, socio-demographic variables have very low explanatory power for the perceptual responses. Our study also revealed misunderstandings around riparian functions and a gap between public expectations and special abiotic and biotic prerequisites in restoring novel ecosystems. Finally, we discuss the relevance of this research to urban novel ecosystems in general, and implications for raising public awareness, engaging appropriate public values in sustainable design and management of such ecosystems.     

断裂构造地带公路定线研究

本文阐述在断裂构造地质地带的公路定线问题。包括:用航空象片判释和地质调绘方法查明断裂构造分布情况,用航测成图和纸上定线方法确定路基和桥隧构造物的稳定位置。结果表明:用航片判释区域地质构造有较好效果,通过地质调绘为评价路线方案和确定线位提供可靠依据,通过航测成图和纸上定线作出了比较经济合理的方案。     

试论速生丰产林持续发展的种苗问题及其对策

为保证福建省速生丰产林持续优质发展，系统分析了与营造速生丰产林相关的种苗基础和种苗问题，提出了与发展速生丰产林相适应的种苗对策．     

石羊河流域生态环境问题及综合整治意见

石羊河流域生态环境存在着严重的问题，主要是由于人口对生态环境的压力过大、水资源利用不当等因素引起的；对存在的问题进行了剖析，并从持续发展和综合生态系统的观点，将石羊河流域作为以水维系的生态系统整体。阐述了石羊河流域祁连山区实行造林和封育措施，绿洲平原区实行节水型持续农业的系统环境整治的技术措施与意见。     

草地类型梯度分析

紫泥泉地区位于天山北坡低山带，具有代表性的冬春秋放牧场。本文应用数量分类（ＴＷＩＮＳＰＡＮ）、排序（ＤＣＡ）和回归分析方法研究了草地类型的分类及其分布的梯度规律。研究结果表明：该地区的草地类型按传统分类划分出１８个型，ＴＷＩＮＳＰＡＮ分类结合ＤＣＡ排序归纳出８个型，其中６个型为地带性草地类型，２个型为非地带性草池类型；地带性草地类型沿水热梯度分布，非地带性草地类型沿质地梯度分布。     

制材车间环境噪声的研究

通过对１３个制材车间车间环境噪声的测试分析，揭示了制材车间环境噪声的现状和特性，车间噪声严重超标，其声压级较高值出现在１￣１６ｋＨｚ频带范围内，根据测试分析结果，提出了降低制材车间环境噪声的途径。     

吉林省荒地资源生态适宜性评价

本文从吉林省荒地资源的实际出发 ,在荒地资源生态适宜性评价基本理论的指导下 ,采用地理信息系统方法 ,对吉林省荒地资源进行了生态适宜性评价。通过空间数据和属性数据的融合、分析、处理 ,可以直观获得荒地资源的生态适宜度等级 ,从而提高评价效率 ,为荒地资源的合理开发利用提供科学依据。     

我国生物农药发展现状及其展望

阐述了我国生物农药的发展现状,对其中存在的问题和相应对策进行了分析,并对其发展前景进行了展望,以期促进生物农药的发展与推广。