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生态节能住宅的整合设计是一个系统设计工程体系,它从满足设计的舒适度要求到节能及能源的优化利用等环节都是息息相关的,这就要求各专业工程设计人员有机配合、密切协作.  相似文献   

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作者对济南泉水由60年代常年昼夜喷涌到80年代百泉干涸的变化过程,作了简要回顾,用对比分析方法着重探讨了生态、植被和泉水的内在联系。认为森林植被状况是影响济南市地下水位和泉水涌量的根本原因,提出了以大规模生态工程建设,增加地面植被,丰富地下水源,作为保泉基本措施的建议。  相似文献   

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自2002年起对舟山五峙山列岛黄嘴白鹭种群的繁殖生态进行研究,结果表明,黄嘴白鹭繁殖期为5-8月,鸟巢主要由灌木枝和草杆组成,平均每窝卵数为2.6枚,平均卵重(23.89±1.45)g,平均卵大小为(45.65±2.26)mm×(32.40 0.65)mm,平均孵化率为82.1%.不同的繁殖年间,五峙山列岛黄嘴白鹭数量和分布存在一定的动态变化,营巢资源、食物资源、物种间的竞争、台风和人为干扰等对黄嘴白鹭繁殖种群的数量和分布均有一定的影响.  相似文献   

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Results from a literature review on pinewood ecology, silviculture,genetics, aspects of history and forest resources of Scots pine(Pinus sylvestris L.) in western Norway are presented. The pinewoodscover 40 per cent of the forested land, 0.31 million ha. Duringthe last 75 years, the area has increased by 17 per cent andthe growing stock has risen from 10 to 34 million m3. The impactof man in previous times was very marked, and has had a significantinfluence on the present forest conditions. The pronounced climaticgradients mixed with the topographic variation – fromthe coastal plains via the fjord systems to the high mountains– is reflected in rather steep gradients in the pine forestvegetation. Various floristic elements can be distinguished,from oceanic via the suboceanic in the outer islands to thethermophytic, boreonemoral and boreal elements in the innerfjord districts and valleys. The introduction of spruce (Piceaspp.) plantations on 10–15 per cent of former native pineforests has not negatively affected the bird fauna at the landscapescale. Although not particular species rich, the pine forestsharbour species usually not found in other forest types. Sofar, most work in the field of silviculture and forest ecologyin the pinewoods of West Norway has been in the form of casestudies. Implications of the results for forestry in the regionare briefly discussed.  相似文献   

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The commercially important mushroom matsutake has been considered uncommon in Sweden by most mycologists and has been unknown to the Swedish public. Between 1849 and 1997, 81 matsutake reports were registered in Sweden. A field study in 1998 resulted in 121 matsutake localities, of which at least 30% were prolific, producing 30-200 fruit bodies ha-1 in the far north of Sweden. Using DNA sequencing of rDNA internal transcribed spacer (ITS) it was shown that Japanese and Swedish matsutake (Tricholoma matsutake and T. nauseosum) should be treated as the same species. The oldest name is T. nauseosum, but it is suggested that the name T. matsutake should be conserved. This study has stimulated private companies to investigate possibilities for commercial export to Japan.  相似文献   

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由于个人、政府、企业通过对森林物质文化的生态认知、生态情感、生态响应而产生的生态法律法规、生态行为守则、生态机构组织和管理机制等组成了森林生态制度文化;森林制度文化是森林管理文化的核心,是国家管理森林的主要工具;研究森林制度文化,分析其薄弱环节、落后因素,并加以改进,有助于建设先进、和谐、科学的森林制度文化。  相似文献   

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由于个人、政府、企业通过对森林物质文化的生态认知、生态情感、生态响应而产生的生态法律法规、生态行为守则、生态机构组织和管理机制等组成了森林生态制度文化;森林制度文化是森林管理文化的核心,是国家管理森林的主要工具;研究森林制度文化,分析其薄弱环节、落后因素,并加以改进,有助于建设先进、和谐、科学的森林制度文化.  相似文献   

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山鹡鸰繁殖生态及雏鸟生长发育观察初报   总被引:1,自引:0,他引:1  
于1999—2001年、2006—2008年的4—9月,对吉林省左家自然保护区内的山鹡鸰的繁殖生态及雏鸟生长发育进行观察和分析。结果表明,仅由雌鸟筑巢,筑巢期5~6 d,每窝产卵4~5枚,孵化期9~10 d,雏巢期10 d。体重呈"S"型增长,其逻辑斯谛方程为:m=10.83/〔1+e-0.8355(t-2.4689)〕。  相似文献   

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生态是适应生态是选择   总被引:2,自引:0,他引:2  
“林业并不是一个关于树木的问题,而是一个关于人的问题”,林业建设与发展从根本上是关系到人类和自然相互关系的问题。文章从生态与生态系统的概念、自然生态系统与人工生态系统的区别与联系、生态工程与生态建设的缘起、生态文化与生态文明的崛起四个方面论述了生态是适应、生态是选择的基本论点。指出生态是一种关系,是一种适应,是一种选择,从而肯定了生态建设的提法及其意义。  相似文献   

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