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121.
Monika Suškevičs Thomas Hahn Romina Rodela Biljana Macura Claudia Pahl-Wostl 《Journal of Environmental Planning and Management》2018,61(7):1085-1112
Learning is considered as a promising mechanism to cope with rapid environmental change. The implications of learning for natural resource management (NRM) have not been explored in-depth and the evidence on the topic is scattered across multiple sources. We provide a qualitative review of types of learning outcomes and consider their manifestations in NRM across selected empirical literature. We conducted a systematic search of the peer-reviewed literature (N = 1,223) and a qualitative meta-synthesis of included articles, with an explicit focus on learning outcomes and NRM changes (N = 53). Besides social learning, we found several learning concepts used, including policy and transformative learning, and multiple links between learning and NRM reported. We observe that the development of skills, together with a system approach involving multi-level capacities, is decisive for implications of learning for NRM. Future reviews could systematically compare how primary research applies different learning concepts and discusses links between learning and NRM changes. 相似文献
122.
纤维水镁石在动物体内有一定的生物活性,但在人群流行性病学结果上显示的一系列信息如接尘工人只出现低的尘肺患病率,没有矽肺病和Ⅲ期尘肺患者。溶解性试验结果表明:水镁石纤维粉尘极易溶解在有机无机强弱酸、混合酸、有机无机铵盐、缓冲溶液中,也可部分溶于水中,导致其在体内滞留时间短且易于清除。说明水镁石纤维是安全的纤维材料且没有致瘤协同作用,由于矿物的表面/界面特征是除纤维特性以外控制纤维生物活性和危害性的关键因素之一,提出了矿物粉尘环境安全评价分类体系应突破矿物种的局限而深入到表面/界面的水平。 相似文献
123.
上海市能源消费CO2排放清单与碳流通图 总被引:6,自引:2,他引:6
基于上海市能源统计数据,参照IPCC(2006)方法,测算了上海市能源CO2排放清单,并绘制了2007年上海市碳流通图.结果表明,上海市能源相关的CO2排放总量从1995年的1.10亿t增长到2007年的2.01亿t,期间年均增长率为5.0%.其中“交通”对应的CO2排放量增长最为迅速,年均增长率达15.1%;而“热电厂”的CO2排放量增幅逐渐变缓,其原因为近年上海市外来电力比重增大.2007年“热电厂”、“工业与建筑业”、“交通”、“商业”、“居民生活”与“农业”各部分CO2排放分担率分别为35.4%、34.4%、23.8%、4.0%、2.0%、0.4%.由2007年上海市碳流通图可见,15.6%的煤炭直接由终端使用,这不利于能源效率的提高与污染物的减排;成品油存在较多的交叉流通,若能够减少不必要的流通,不但能够缓解成品油的运输,还能够减少其在转运过程中的输配损失. 相似文献
124.
Andrés González Frank C. Schroeder Athula B. Attygalle Aleš Svatoš Jerrold Meinwald Thomas Eisner 《Chemoecology》1999,9(3):105-112
Summary. Female Photuris fireflies sequester defensive steroidal pyrones (lucibufagins) from male fireflies of the genus Photinus. Lucibufagin analyses of Photuris females and Photinus ignitus males show that the lucibufagin mixtures of predator and prey differ in their composition. Analyses of whole body extracts
showed that P. ignitus males contain a mixture of eight non-glycosylated lucibufagins, composed mostly of compounds with two oxygenated positions
in the steroidal A-ring (C-3, C-5). After feeding on P. ignitus males, Photuris females contain six major lucibufagins. Three of these compounds are not present in the prey, including the novel lucibufagin
glycoside 5β,11α-dihydroxy-12-oxo-3β-O-β-D-xylopyranosylbufalin, and two other lucibufagins with a trioxygenated A-ring (C-2,
C-3, C-5). These results indicate that Photuris females transform the sequestered lucibufagins both by glycosylation and oxidation, which could affect the systemic transportability
of these compounds due to an increase in their polarity.
Received 18 February 1999; accepted 19 April 1999. 相似文献
125.
成都市PM10中多环芳烃来源识别及毒性评估 总被引:1,自引:0,他引:1
对成都市2009年冬夏两季可吸入颗粒物(PM10)中16种多环芳烃(PAHs)含量进行了研究,并进一步分析其空间分布、组成特征及来源.结果表明,16种PAHs中15种被普遍检出(Nap未检出),冬季和夏季的ΣPAHs浓度范围分别为40.25~150.68ng/m3和44.51~71.16ng/m3,平均浓度分别为88.36ng/m3和64.21ng/m3.空间分析表明,PAHs浓度在工业区较高,背景点较低.从PAHs组分分析结果显示,低环含量较低,4~6环所占比例较大,其比例范围为86.7%~96.1%.各组分含量季节差异不明显.利用特征化合物比值法、等级聚类法、PCA解析法分析了污染源类型,结果表明成都市PM10中PAHs的主要来源是机动车尾气排放源,以及煤与木材燃烧源.通过BaP当量(BaPE)进行了毒性评估,结果显示成都市冬夏两季的BaPE均值分别为13.41ng/m3和9.54ng/m3. 相似文献
126.
Wang Yiming Wu Jiangyu Ma Dan Pu Hai Yin Qian Chen Weiqiang 《Environmental science and pollution research international》2023,30(2):2904-2917
Environmental Science and Pollution Research - The use of cement and fly ash (FA) to prepare cemented tailings backfill (CTB) lowers backfill mining costs while also reducing pollution caused by... 相似文献
127.
Puławska Aleksandra Manecki Maciej Flasza Michał Styszko Katarzyna 《Environmental geochemistry and health》2021,43(9):3533-3556
Environmental Geochemistry and Health - The composition and distribution of airborne particles in different locations in a salt mine were determined in terms of their origin, the distance from the... 相似文献
128.
Andráš Peter Dadová Jana Romančík Roman Borošová Daniela Midula Pavol Dirner Vojtech 《Environmental geochemistry and health》2021,43(9):3675-3681
Environmental Geochemistry and Health - The abandoned Malachov deposit belongs among the most important historic Hg deposits in the world. The soil, groundwater, surface water, plants, and animals... 相似文献
129.
Hefu Pu Aamir Khan Mastoi Xunlong Chen Dingbao Song Jinwei Qiu Peng Yang 《Frontiers of Environmental Science & Engineering》2021,15(4):67
130.
R. Stakėnienė K. Jokšas A. Galkus E. Raudonytė-Svirbutavičienė 《Chemistry and Ecology》2016,32(4):357-377
A total of 22 bottom surface sediment samples were collected from Klaip?da Harbour, Lithuania (Baltic Sea). Sediment parameters, such as grain size and concentrations of total organic carbon, aliphatic hydrocarbons (ALHs) and polycyclic aromatic hydrocarbons (PAHs), were determined. Hydrocarbon contamination levels in the sediments were estimated based on classifications provided in the literature, and potential biological effects were assessed based on the effects range low–effects range median values of the Sediment Quality Guidelines and on the total toxic benzo(a)pyrene equivalent. The results demonstrated that concentrations of PAHs and total aliphatic hydrocarbons in the sediments varied between 1.6 and 5456?ng?g?1 d.w. and 6.9 and 727?μg?g?1 d.w., respectively. In most cases, the concentrations of ALHs and PAHs in the sediments indicated low to moderate levels of pollution and were not observed to have any significant adverse effects on living biota. To determine possible sources of hydrocarbons, hydrocarbon compositions were analysed, and ALHs’ and PAHs’ specific diagnostic ratios were calculated. According to the results, the Klaip?da Harbour bottom sediments were dominated by PAHs of pyrogenic origin, whereas the origin of ALHs was mixed, that is, anthropogenic with a biogenic (aquatic and terrestrial) input. 相似文献