Acknowledgement to Reviewers     

《山地科学学报》2014,(6):1620-1636

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北京市生态农业地质及其前景   总被引：2，自引：0，他引：2  

曾昭华 《城市地质》2005,17(1):20-26,29

论述了北京市土壤元素含量和农作物优质高产与土壤环境中化学元素有密切的关系。提出了生态农业地质研究的目的、内容、方法、管理及其前景。  相似文献   

Earth support systems: Threatened? why? what can we do?     

Paul H. Reitan  Eric H. Reitan 《Journal of Earth System Science》2001,110(4):269-285

The most important concept to emerge in the 20th century was the recognition that sustainability is threatened. A sustainable society is one that functions and lives in such harmony with earth systems that future generations will be able to function with equal or greater ease and the quality of life will in no way be diminished. Evidence of threats to sustainability is found in: global energy use; global climate change; availability of sufficient safe water; degradation of soil on agricultural lands; food production for a global population of 9,000 million by 2050; accelerated extinction rates and loss of biodiversity; human under- and over-nourishment; and the spread of diseases. Ignorance borne of alienation from nature deprives us of sensitivity to the threats human activities cause. Alienation may be traced to the agricultural revolution, but has become widespread and even inescapable for many with massive control of energy and the industrial revolution, dependence on machines, and urbanization. With the control of enough energy to dominate nature and the achievement of a high, but transient, level of wealth, a world view extolling growth—led by the highly industrialized nations, but now being emulated in the developing countries—has committed the world to an unsustainable path. Because of this, world societies must work to find practical “sustainability” world views to help guide our future choices. Wise choices will depend upon good scientific understanding and must be based upon a deep respect for the non-human world and a concern for the future. The environmental meaning of different world views, whether founded in the world religions or in nonreligious philosophy, share a common concern to promote an equitable, harmonious, and sustainable relationship between humanity and nature. The similarities in pragmatic meaning in relation to nature of, e.g., Christian stewardship and Deep Ecology, illustrate this. Our attention must not be directed towards alternative symbolic or linguistic vocabularies, but toward the practical environmental commitments that different world views entail. Our problems have global reach and many of them are urgent, but they are not intrinsically unsolvable. We must seek ways to find and use common ground in the search for sustainability. We must work together, but remember that each of us contributes to the final outcome.  相似文献   

景观地球化学研究现状与进展   总被引：3，自引：0，他引：3  

徐德兰  曾勇 《江苏地质》2003,27(3):159-163

在界定景观及景观地球化学研究对象及内容的基础上，概述了景观地球化学的思想和研究方法，其中整体论是各种研究方法的基础，非常规研究方法将占据重要地位。同时，对国内外景观地球化学研究的现状及进展进行综述与分析。提出单学科深入与多学科交叉整合发展是2l世纪景观地球化学研究发展的趋势，也是其在地球系统科学研究和实施“可持续发展”战略中发挥重要作用的关键。  相似文献   

广州城市形象的文化推进     

李文翎  刘洪杰 《热带地理》2002,22(1):48-51

21世纪的新型城市与 2 0世纪的大型工商业都市有明显的区别。“现代化”的概念和标准已变 ,新型城市不再追求林立的大厦和集中的闹市 ,而是以开阔的空间布局和交错的多元景观为特征。广州未来的城市形象 ,是建成具有东方文化特色的生态城市。以此为目标 ,保护和建设现有绿色走廊 ,对调整广州总体的生态用地布局 ,均衡广州的绿地分布 ,改善广州城市形象 ,实现三年中变的目标 ,都具有极为重要的作用和非常现实的意义  相似文献   

Human–wildlife conflict and gender in protected area borderlands: A case study of costs, perceptions, and vulnerabilities from Uttarakhand (Uttaranchal), India     

Monica V. Ogra   《Geoforum》2008,39(3):1408-1422

Human–wildlife conflict (HWC) is a growing problem for communities located at the borders of protected areas. Such conflicts commonly take place as crop-raiding events and as attack by wild animals, among other forms. This paper uses a feminist political ecology approach to examine these two problems in an agricultural village located at the border of Rajaji National Park in Uttarakhand (formerly Uttaranchal), India. Specifically, it investigates the following three questions: What are the “visible” and “hidden” costs of such conflict with wildlife? To what extent are these costs differentially borne by men and women? How do villagers perceive any such differences? Survey and interview data were collected from over 100 individuals in the study site over a period of 9 months in 2003–2004. It was found that for participants in this study, costs of HWC included decreased food security, changes to workload, decreased physical and psychological wellbeing, economic hardship, and at times an increase in illegal or dangerous activities. The research also showed that although women in the study area bore a disproportionate burden of these effects, roughly half of survey respondents perceived that men and women were equally affected. A possible explanation for this gap considers the relationships between gendered uses of space, work, status, and identity. The findings illustrate the importance of addressing both visible and hidden costs of HWC for members of park communities and support a call for increased gender-sensitivity in HWC research.  相似文献   

南极的海冰区生态学研究   总被引：1，自引：0，他引：1  

何剑锋  陈波 《地球科学进展》1998,13(2):173-177

南极海冰区生态学研究始于20世纪60年代,属新兴的生态学研究领域。经过三个阶段的发展和深入研究,科学家们对海冰在冰区生态系统中的作用方面取得了共识。随着EASIZ和CS-EASIZ等国际南极区域性计划的相继出台,该研究已成为目前南极生态学研究的前沿和热点领域。文章同时对该领域的国内、外研究现状做了简要的介绍。  相似文献   

环境生态系统散落核素示踪研究新进展   总被引：13，自引：2，他引：13  

万国江  P. G. APPLEBY 《地球科学进展》2000,15(2):172-177

环境生态系统中的放射性核素既具有生态毒性,对生物和人体健康产生重要影响,又具有稳定的衰变函数和输入通量,对环境生态系统具有重要示踪价值。人类可利用放射性核素来认识环境生态系统:①环境生态系统中放射性核素的基准:放射性强度与环境生态系统之间的平衡关系;②环境生态系统中放射性核素的行为:在环境生态系统不同宿体和组分间的运移关系。考察放射性核素在生态系统不同环节中比活度的变化有助于认识环境生态过程生物地球化学作用的影响。    相似文献   

渤海■虎鱼类的生物学调查——关于区系分布与生态学基础的研究   总被引：2，自引：0，他引：2  

刘群  苏振明  曾晓起  叶振江  尤凯 《中国海洋大学学报(自然科学版)》1997,(2)

虾虎鱼类Ｇｏｂｉｏｉｄｅｉ是包括弹涂鱼科Ｐｅｒｉｏｐｈｔｈａｌｍｉｄａｅ、鳗虾虎鱼科Ｔａｅｎｉｏｉｄｉｄａｅ等在内的一群小型鱼类。全世界计有约１７２０种左右，全国有１６１种海水虾虎鱼类，其中有２０种分布于渤海，这次调查共采到１９种，其中有２种系黄海边缘分布，为渤海首次记录。本文报告了虾虎鱼类在渤海水域的名录，分布和生态学特征，分析了它们在渤海生态系中的作用，特别是对增殖放流对虾的影响  相似文献   

Obelia (Cnidaria, Hydrozoa, Campanulariidae): a microphagous, filter-feeding medusa     

Ferdinando Boero  Cecilia Bucci  Anna Maria Rosaria Colucci  Cinzia Gravili  & Loredana Stabili 《Marine Ecology》2007,28(S1):178-183

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