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461.
Mugla is a city that is located in the southwest part of Turkey. Three thermo-electric power plants called Yatagan (3 × 210 MW) and Yenikoy (2 × 210 MW)and Kemerkoy (Gokova, 3 × 210 MW) havebeen constructed in this region and also have begun operation in 1982 – 1983 – 1984 (three units), in 1988 and in 1995, respectively. The Pinus brutia forests in Yerkesik–Denizova region have been under the common effects of Yenikoy and Yatagan thermo-electric power plants. Therefore, these Pinus brutia forests have startedto dry in groups since 1988. In addition, Kemerkoy thermo-electric power plant, began operation in 1995.Polluting gases arrived in Denizova-Yerkesik throughKoca Stream Valley Forests.Increasing quantities of polluting gases and especially SO2 have dried the trees in large amounts in this 1650 ha forestland area. YataganThermo-electric power plant has caused drying of Pinus brutia in Bencik Mountain, which was on the south in 1984–1985. The same phenomenon was seen in Denizova-Yerkesik Forest in 1999–2000. It was observed that sulphur content was varying between 4218–6676 ppm at the Pinus brutia needle samples taken in this region on 16 December 2000. Sulphur contents were correlated with the age of needle (1–2 yr old), density of yellow stains on the needles and amount of drying needles. Particularly in 1996–2000 period, the destruction of chlorophyll in needles due to the impacts of SO2 was also correlated with narrowing of the annual rings from one year to another. The narrowing ratio of yearly rings reached 60–504% for 94–95 yr old, and 375–661% for 58–63 yr old Pinus brutia trees during the 1986–1990, 1991–1995 and 1996–2000 periods.All these results clearly showed that the decrease in the chlorophyll content in needles under the effect of air pollution caused important reduction in the raw timber production and its inputs to the economy. In other words, drying due to increased ecological sensitivity or direct hazard of pollutants emitted by the power plants and cutting of trees have been notably increased in the region. This has created serious economic losses. 相似文献
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Jan Karlas 《环境政策》2017,26(5):825-846
Why do some states and state coalitions, acting within the United Nations Framework Convention on Climate Change (UNFCCC), support harder legalization of the global climate regime? In order to explain why, the effects of four causal factors are considered: climate vulnerability, the emission intensity of the national economy, a state’s power position, and socialization into climate norms. To identify the legalization positions of UNFCCC actors, an original content analysis is conducted of all the submission and meeting statements made at the Ad Hoc Working Group on the Durban Platform during the years 2012–2015. Subsequently, a qualitative comparative analysis is carried out to find out which combinations of the causal factors offer a sufficient explanation for the analyzed outcome, leading to the identification of two causal pathways that lead states to endorse harder legalization of the climate regime. 相似文献
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Jichang Han Lin Zhang Pu Wang Song Wang Guanpin Yang Lu Zhao 《International Journal of Green Energy》2017,14(5):454-462
BH32 and BH43 were isolated and identified as Amphikrikos sp. based on morphological characteristics and phylogenetic trees. They shared the same 18S rRNA sequences, but possessed different amounts of introns in their 18S rDNAs. The specific growth rate, cellular component and fatty acid profile under different growth stages have been surveyed. Their main fatty acids were found to be C16 and C18 groups. Our results indicated that both of them could be taken as excellent candidates of biodiesel. Moreover, the intra-genus polymorphism of 18S rDNA caused by intron presence/absence can provide valuable information for the study of intron evolution. 相似文献
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在1986年10月31日~1987年5月17日间,中国"极地"船作环球暨南极的航行中对空气微生物进行了考察。测点分布在其行经的30921海里的空气中,样品计432份。作了对微生物的含量分析及分类研究。结合有关参数,比较各类型环境间微生物含量的差别,指出本环球航行所经各区空气微生物的状况。结果表明,西半球、大西洋、温带、台湾海峡、南美洲、中国、坎帕纳(阿根廷)、黄海等区域的空气微生物含量一般分别比同类环境的高。南大洋空气较洁净,所考察的环球空气至少有15属细菌和5属酵母,葡萄球菌、微球菌较多,长城站空气中有芽孢杆菌。的结果说明长城站的空气微生物含量高于其他两测区的,内海(此处指麦克斯威尔湾)空气的微生物含量高于开阔性海域的(指南设得兰群岛海域),与其他区域比,陈皓文等,国际五城市空气微生物概况(待发表)。陈皓文等,中国南极长城站微生物考察(待发表)。南设得兰群岛区域的微生物(待发表)。表7世界5个海峡空气微生物含量表8南美一些近海河流、水道空气微生物含量表9中国海空气微生物含量(CFL/m3)南极半岛空气仍较洁净,但长城站的空气有待改善。当船只进入中国海域时,均测定了空气微生物。结果列于表9,表中说明黄海的空 相似文献
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环境信息披露制度研究 总被引:4,自引:0,他引:4
环境信息披露分为政府环境信息披露和企业环境信息披露两个层面。政府环境信息披露包括政府在制度性信息与管理信息、生态安全信息等方面的披露.企业环境信息披露内容包括企业强制性披露信息与自愿披露信息、企业生产阶段的信息和其他阶段的信息。笔者在对这些问题进行研究和分析的基础上.进一步对我国环境信息披露内容的控制及实施进行了探讨。 相似文献
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唐忠辉 《中国环境管理干部学院学报》2009,19(3):1-4,26
我国已经初步建立了环境损害赔偿法律体系,并确立了一些具体的法律制度。但是立法体系还不完善,法律规定之间还存在一些矛盾冲突,有些制度还未建立或健全,亟待完善。应通过专门立法完善立法体系和法律内容,确立赔偿原则,明确赔偿范围,扩大赔偿主体,建立社会化赔偿机制,拓宽赔偿途径,完善赔偿程序和诉讼保障机制等,以及时有效地救济受害人权益。 相似文献