Arthropod community organization and development in pear

Arthropod communities in pear are conceptualized as hierarchically organized systems in which several levels of organization or subsystems can be recognized between the population level and the community as a whole. An individual pear tree is taken to be the community habitat with arthropod subcommunities developing on leaf, fruit, and wood subcommunity habitats. Each subcommunity is composed of trophically organized systems of populations. Each system of populations is comprised of a functional group or guild of phytophagous arthropods that use the habitat primarily for feeding but also for overwintering or egg deposition, and associated groups of specialized predators, parasitoids, and hyperparasitoids. Several species move from one subcommunity to another during the course of community development and thus integrate community subsystems. Community development or change in organization through time is conceptualized as being jointly determined by the development of the habitat and the organization of the species pool. The influence of habitat development on community development within a species pool is emphasized in this research. Seasonal habitat development is expressed as change in the kinds and biomasses of developmental states of wood, leaf, and fruit subcommunity habitats. These changes are accompanied by changes in the kinds, biomasses, and distributions of associated community subsystems.     

Ecological principles,biodiversity, and the electric utility industry

The synthetic field of conservation biology uses principles derived from many different disciplines to address biodiversity issues. Many of these principles have come from ecology, and two simple ones that seem to relate to many issues involving the utility industry are: (1) Everything is interconnected (and should usually stay that way), and (2) We can never do merely one thing. The first principle can be applied to both the biotic and physical environments that are impacted by industrial activities. Habitat fragmentation and the loss of physical and biotic connectedness that results are frequently associated with transmission rights-of-way. These problems can be reduced—or even turned into conservation benefits—by careful planning and creative management. The second principle applies to the utility industry's programs to deal with carbon released by burning fossil fuels. Ecological knowledge can allow these programs to contribute to the preservation of biodiversity in addition to addressing a pollution problem. Without careful ecological analyses, industry could easily create new problems while implementing solutions to old ones.     

自然保护区生态旅游开发及保护规划探讨——以武夷山自然保护区为例

对自然保护区生态旅游开发意义和特点进行阐述，并以武夷山自然保护区为例，探讨如何制订自然保护区生态旅游保护规划，提出管理监控的内容和方法。     

农药使用的危险性评价

提出了农药使用危险性的单项因素及综合评价方法。其中必评因素包括,农药用量,急性和慢性毒性,三致作用,农药在作物和土壤中的半衰期,鱼毒,蜂毒以及对眼肤的刺激作用;附加参数包括,农药挥发性,代谢增毒作用,生物浓缩系数和除草剂对后茬作物的毒性。评价注重农药用量和急性毒性,在对205种农药进行评价的基础上,提出了我国用量最大的5种杀虫剂属危险级。     

建设项目环境影响经济评价方法研究

对建设项目进行环境影响经济评价的类型划分基础上，提出了环境影响经济评价指标体系，环境影响评价的“有无对比法”和“增量评价法”以及实例，并就评价方法运用的进一步研究，如评价参数的选取、评价结果的处理等提出了建议。     

海岛土地与土地系统生态设计刍议

本文依据生态学理论对海岛土地及土地系统生态功能进行了重新的认识,并探讨了海岛土地系统生态设计的依据、原则和模式.设计中强调以土地系统生态保护性功能为主体,以海岛土地系统高层次调合发展作为海岛建设的最终目标.     

浅谈提高环境影响评价质量的途径

简要阐述了环评工作中存在的问题，提出提高环评质量的途径。     

蓝绿藻的生态学研究进展

在适宜的环境条件下，蓝绿藻在水中易形成水花，危害人群健康，各国学者对蓝绿藻进行过大量的生态不研究，近20年来的研究表明，蓝绿藻的生长和产毒，受光照、温度、氮磷、微量元素、溶解氧、叶绿素含量等多种环境因素的影响，这些因素的共同作用，导致了蓝绿藻生长及产毒水平的波动，也造成了水体中优势藻的季节性变化。     

蒙山茶业发展中的生态环境问题与对策刍议

分析了蒙山茶业生态环境特征，指出目前传统茶区存在的弊病，提出在蒙山建立生态茶区的重要性及其具体措施。