基于GIS的南岭国家自然保护区生物多样性信息系统的设计与实现

以ArcView GIS3.2为支撑平台,以VB6.0和Mapobjects2.0组件为开发语言,根据南岭国家自然保护区生态环境特点和多年调查的生物资源信息资料,建立了基于GIS的南岭生物多样性信息系统,该文描述了系统的建立过程和开发框架。     

第三生物生产业的沿革与发展趋势

以微生物为生物作用剂的第三生物生产业经历了漫长的发展阶段之后,于本世纪迅速崛起并挤身世界经济支柱产业之列。我们必须认识与把握其发展规律和趋势,制定相应的战略和对策,以推动第三生物生产业持续发展,造福人类。     

对区域性生态园林建设的认识与思考

对生态园林这一个全新的、模糊的概念,结合欧洲、日本等国发展生态园林的理论与实例,探讨了生态园林概念的狭义性与广义性（区域性）。对区域性生态园林建设中的一些焦点问题及应遵循的原则做了探讨,提出了发展天津特色生态园林的目标和措施建议。     

On Green Design (Part 2): The Basic Premises for Green Design

In the second part of his green design series, Ken Yeang highlights how a prospective site can provide the essential springboard for eco-masterplanning. A full survey of the site and its sensitive development allows the built environment not only to be designed analogously with existing ecological systems, but also to reach out beyond the immediate footprint and to have a restorative effect on the surrounding area. Copyright © 2007 John Wiley & Sons, Ltd.     

加拿大魁北克省的区域环境和生物多样性探讨

魁北克是加拿大最大的一个省,其地理位置、资源条件与我国东北类似,多年来在处理经济社会发展和环境保护这一对矛盾中生存发展,取得了经验。综合探讨了魁北克省区域环境和生物多样性方面的现状,特点和保护,提出了几点认识和建议。     

Genotyping by Sequencing Reveals Genetic Relatedness of Southwestern U.S. Blue Maize Landraces

Maize has played a key role in the sustenance and cultural traditions of the inhabitants of the southwestern USA for many centuries. Blue maize is an important component of the diverse landraces still cultivated in the region but the degree to which they are related is unknown. This research was designed to ascertain the genotypic, morphological, and phenotypic diversity of six representative southwestern blue maize landraces. Their genotypic diversity was examined using tunable genotyping-by-sequencing (tGBS™). A total of 81,038 high quality SNPs were identified and obtained through tGBS. A total of 45 morphological and biochemical traits were evaluated at two locations in New Mexico. The varieties Los Lunas High and Flor del Rio were genetically less related with other southwestern landraces whereas diffusion between Navajo Blue, Hopi Blue, Yoeme Blue, and Taos Blue demonstrated that these landraces were genetically related. Phenotypic variability was highest for kernel traits and least for plant traits. Plant, ear, and kernel traits were fairly consistent within and across locations. Principal component analysis and tGBS showed that Corn Belt variety ‘Ohio Blue’ was distinctly different from southwestern landraces. Genotypic analysis displayed that southwestern landraces are genetically closely related, but selection has resulted in differing phenotypes. This study has provided additional insight into the genetic relatedness of southwestern blue maize landraces.     

ECOLOGICAL FUNCTIONS OF FISH BYPASS CHANNELS IN STREAMS: MIGRATION CORRIDOR AND HABITAT FOR RHEOPHILIC SPECIES

The introduction of weirs into stream ecosystems resulted in modifications of serial continuity and in the decline of riverine fish species. Successful river restoration requires information on the ecological functionality of fish bypass channels that are considered an ecological improvement according to the European Water Framework Directive. In this study, we compared the functionality of three nature‐oriented fish passes as compensatory habitats and migration corridors for fishes. Fish passes differed significantly from upstream and downstream reaches of the weirs, revealing higher current speed, lower water depth, smaller channel width and greater habitat variability. Following these structural differences, they provided key habitats for juvenile, small and rheophilic fishes that are typically underrepresented in highly modified water bodies. All fish passes were used as migration corridors, with increased fish movements during high discharge and at spawning periods. Because river stretches with high variability of current speed and water depth are scarce in highly modified water bodies, fish passes can play an important role as compensatory habitats and should thus be considered more intensively in habitat assessments and river restoration. Ideally, fish bypasses should mirror the natural discharge dynamics and consider all occurring fish species and sizes. Copyright © 2011 John Wiley & Sons, Ltd.     

基于GIS的四川植物物种丰富度与地形关系分析

利用四川省SRTM DEM和种子植物分布数据,在Arc GIS 10.1软件平台下运用其强大的多源数据处理和空间分析能力,定量分析该省植物物种丰富度和地形单元多样性,并在区域尺度上对两者之间的关系进行研究。结果表明:地形单元多样性指数介于0~0.86之间,指数较小的区域集中分布于成都平原、诺尔盖湿地和川西北高寒江源区等;指数较高的区域主要分布于四川盆地的盆周山区和川西的纵向岭谷区;全省种子植物物种多样性无论是在科、属、种阶元的丰富度,还是科、属的分化强度上,均表现出较为一致的空间分布格局和变化趋势,均呈现由盆地到盆周山区逐渐升高,再到高原(川西高原和攀西高原)又逐渐降低。总体上,种子植物物种丰富度随着地形单元多样性的增加而上升。研究结果初步揭示了区域尺度上植物物种多样性分布的地形背景,可为区域生态功能区划及流域生态保护与可持续发展提供科学的理论与数据支持。