Climate adaptability

  • 文章类型: Journal Article
    构建海洋生态安全庇护所(MESS)已成为我国应对海洋生态威胁的主要策略。由于中国的海洋政策缺乏一个强有力的框架文件,政策体系能否有效支持MESS的建设是需要考虑的。然而,MESS的建设措施与相关政策之间的联系尚不明确。因此,本文的目的是阐明MESS的概念及其与政策的联系,采用政策内容分析法分析MESS相关政策体系的演化过程。然后对MESS相关政策体系的立法缺陷和实施障碍进行了总结和讨论。结果表明,从1981年到2021年,MESS相关政策体系不断完善。然而,政策体系对MESS建设的支撑和保障能力仍有待提高。(1)由于缺乏基本法和特别法,治理主体之间和政策之间的协调缺乏立法保障。(2)MESS的建设延续了海洋环境协同治理的区域间和部门间的行政壁垒。建立有效的协同治理模式,完善治理结构和机制至关重要。(3)政府主导型治理模式面临机制失灵问题。指挥控制仪器占82%以上,公众和企业参与海洋治理缺乏强有力的政策保障。(4)必须提高政策系统对新出现威胁的适应性。海洋政策很少涉及气候变化和新污染物等新出现的威胁。同时,实时监管机制薄弱。实时监管仅占10%左右。一般来说,作为一项复杂而长期的系统工程,MESS的建设不可避免地会遇到政治上的矛盾,文化,和经济。中国应深化海洋生态文明建设,形成基于生态系统的治理理念。总的来说,本文有助于全面理解MESS与政策的内在联系,为提高我国海洋治理能力提供新的视角。
    Building a marine ecological security shelter (MESS) has become the main strategy to adapt marine ecological threats in China. As China\'s marine policy lacks a robust framework document, it is necessary to consider whether the policy system can effectively support the construction of MESS. However, the linkage between the construction measures of MESS and related policies is not clear. Therefore, the purpose of this paper is to clarify the concept of MESS and its connection with policy, by adopting the policy content analysis method to analyze the evolution process of MESS-related policy system. The legislative shortcomings and implementation obstacles of the MESS-related policy system are then summarized and discussed. The results show that from 1981 to 2021 the MESS-related policy system has been continuously improved. However, the policy system\'s support and guarantee capacity for building MESS still needs to be improved. (1) Due to the lack of basic laws and special laws, the coordination among governance subjects and among policies lacks legislative guarantee. (2) The construction of MESS continues the inter-regional and inter-department administrative barriers in collaborative governance of marine environment. To establish an effective collaborative governance model, it is essential to improve the governance structure and mechanism. (3) The government-led governance pattern faces the problem of mechanism failure. The command and control instrument accounts for more than 82%, and the public and enterprises lack strong policy guarantees to participate in marine governance. (4) The policy system\'s adaptability to emerging threats must be improved. Marine policies rarely involve emerging threats such as climate change and new pollutants. Meanwhile, the real-time supervision and monitoring mechanism is weak. The real-time supervision is only accounting for about 10%. Generally speaking, as a complex and long-term system engineering, the construction of MESS will inevitably encounter contradictions in politics, culture, and economy. China should deepen the construction of marine ecological civilization and form a governance concept based on ecosystems. Overall, this paper helps to understand the internal connection between MESS and policy comprehensively and provides a new perspective for improving China\'s marine governance capacity.
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  • 文章类型: Journal Article
    2060年实现碳中和(中国)建筑节能一直受到高度关注。作为能源消耗的一部分,大学建筑具有巨大的节能潜力,其中70%的能量损失是由外壳的热量传递引起的。然而,大多数关于信封节能因素的研究仅限于特定的气候或特定的建筑类型,不同气候区域下包络线的最优配置问题尚未得到很好的解决。因此,本文通过正交设计和数值模拟分析了不同气候条件下教学楼围护结构各因素对能耗的影响程度和适宜参数。结果表明:(1)太阳能得热系数(SHGC)和室内空气变化率(ACH)[外墙传热系数(K墙)和ACH]是影响制冷[热]负荷的主要因素,外墙(Wins)和K墙[Wins和外表面材料的太阳辐射吸收系数(ρs)]的保温形式影响较小;(2)各因素对冷(或热)负荷影响的重要排序和最佳水平与当地负荷需求有关;(3)对于年负荷,K墙和外窗的传热系数(Kwin)是严寒和寒冷地区节能的重点,但它们在广州和昆明的影响并不显著,SHGC的高度重要性仅在呼和浩特显示,拉萨,广州,和海口;(4)通过优化所有因素,在不同气候下,年负荷节能达到39.64%-57.57%。研究结果可为不同气候(中国)的教育建筑围护结构节能设计与改造提供指导和数据参考。
    To achieve carbon neutrality in 2060 (China), building energy-saving has been highly concerned. University buildings have great energy-saving potential as part of energy consumption where 70% of energy loss is caused by heat transfer from the envelope. However, most of the research on energy-saving factors for envelopes is limited to a certain climate or a specific building type, and the optimal configuration of envelopes under different climatic regions has not been well solved. Therefore, the influence degree and appropriate parameters of each factor of the teaching-office building envelopes on energy consumption under different climates were analyzed in this paper by orthogonal design and numerical simulation. Results show that: (1) Solar heat gain coefficient (SHGC) and indoor air change rates (ACH) [the heat transfer coefficient of the exterior wall (K wall ) and ACH] are the main factors affecting the cooling [heating] load, the insulation form of the exterior wall (W ins ) and K wall [W ins and solar radiation absorption coefficient of exterior surface materials (ρ s )] have less influence; (2) The important ranking and optimal level of the influence of each factor on the cooling (or heating) loads are related to local load demands; (3) For the annual load, K wall and the heat transfer coefficient of the exterior window (K win ) is the focus of energy-saving in severe cold and cold zones, but their impact is not significant in Guangzhou and Kunming, and the high significance of SHGC is only shown in Hohhot, Lhasa, Guangzhou, and Haikou; (4) The annual load energy savings reach 39.64%-57.57% in different climates by optimizing all factors. The research results can provide directions and data references for the energy-saving design and renovation of educational building envelopes in different climates (China).
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  • 文章类型: Journal Article
    在中国西北部的棉花种植区,河马(Goeze)和Propylaeaquatuordecimmpunctata(Linnaeus)(鞘翅目:Coccinelidae)是半翅目害虫的主要天敌。因为只有H.variegata可以在炎热时遇到,干旱的产区,这两个物种的热响应和气候适应性可能存在很大差异。在这项研究中,我们评估了生存率,长寿,繁殖力,猎物消耗率,以及在32-38°C的实验室条件下两种物种的抗氧化能力。高温的(负面)影响(即,35和38°C)对成虫的生存和繁殖比H.variegata更为明显。同样,高温对四角鱼的猎物消耗率表现出最强烈的负面影响。在高温下,超氧化物歧化酶和过氧化氢酶活性增加,而两个物种的谷胱甘肽-S-转移酶活性均降低。然而,对于P.quatuordecimmpunctata,过氧化物酶活性和总抗氧化能力逐渐下降。因此,抗氧化反应构成了瓢虫对热应激的关键生理适应,反映了H.variegata的优异耐热性。我们的工作强调了实验室测定如何解释单个瓢虫的时空分布模式,并为在全球变暖或极端天气事件的条件下支持其后续生物控制的策略提供信息。
    In cotton-growing regions of northwestern China, Hippodamia variegata (Goeze) and Propylaea quatuordecimpunctata (Linnaeus) (Coleoptera: Coccinellidae) are key natural enemies of hemipteran pests. As only H. variegata can be encountered in hot, arid production areas, the thermal responses and climatic adaptability of both species likely differ substantially. In this study, we assessed the survival, longevity, fecundity, prey consumption rate, and antioxidant capacity of both species under laboratory conditions at 32-38 °C. The (negative) impacts of elevated temperatures (i.e., 35 and 38 °C) on adult survival and reproduction were more pronounced for P. quatuordecimpunctata than for H. variegata. Similarly, high temperatures exhibited the strongest negative impacts on the prey consumption rates of P. quatuordecimpunctata. At elevated temperatures, superoxide dismutase and catalase activity increased, while glutathione-S-transferases activity decreased for both species. However, for P. quatuordecimpunctata, peroxidase activity and total antioxidant capacity progressively declined. Antioxidant responses thus constitute a key physiological adaptation of ladybugs to heat stress, reflecting a superior thermal tolerance of H. variegata. Our work emphasizes how laboratory assays can explain spatiotemporal distribution patterns of individual ladybugs and inform strategies to bolster their ensuing biological control under conditions of global warming or extreme weather events.
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  • 文章类型: Journal Article
    进行了一项研究,以评估西非矮人(WAD)山羊饲养者的特征及其特征偏好,作为更广泛的表型表征工作的一部分,目的是为改善家庭管理提供信息。加纳品种的保护和生产力。从该国中部带和南部的四个农业生态区总共选择了384个受访者家庭,以进行问卷调查和在野外条件下直接观察动物。结果表明,饲养WAD山羊的女性(54.2%)比男性(45.8%)略多,属于年轻和中年的经济活跃人群(53.9%)。这些山羊饲养员中的大多数以一种或另一种方式结婚(73.8%)和受过教育(87.3%)。他们主要从邻居(80.5%)和公开市场(16.0%)获得首发或基金会股票。抽样家庭的平均羊群大小为7.9±1.5,而羊群结构占成年雌性的56.1%,27.5%的成年完整男性,1.2%的阉割和15.2%的男女儿童。生存能力,快速生长速率和较大的产仔数是农民最喜欢的数量性状,尽管这些受访者中的大多数更喜欢饲养没有角等定性特征的WAD山羊,荆棘和胡须。从研究结果来看,结论是,如果在山羊价值链上获得必要的投入援助,WAD山羊饲养者的有利社会经济特征可以维持集约化并提高该品种的生产力。WAD山羊养殖户的主要目标是为各种目的生产成熟的动物,WAD山羊繁殖计划的繁殖目标是增加存活率,光毛的生长速率和产仔数(白色,灰色和浅棕色)山羊。最后,大多数农民缺乏对热带有益的质特征的重要性的知识,如角,wattle,胡子和浅色的外套对生存能力,山羊的气候适应性或复原力和生产力。因此,建议在政府的“食品和就业养育计划”下,对农民进行保护和纳入具有此类特征的动物的选择实践的重要性的教育。
    A study was conducted to evaluate the characteristics of West African Dwarf (WAD) goat keepers and their trait preferences as part of a broader phenotypic characterisation work with the aim of providing information for improving the household management, conservation and productivity of the breed in Ghana. A total of 384 respondent households were selected from four agro-ecological zones in the middle belt and southern part of the country for questionnaire administration and direct observation of animals under field conditions. The results showed that there are slightly more women (54.2%) keeping WAD goats than men (45.8%) and fall within the economically active population of youthful and middle age categories (53.9%). A majority of these goat keepers were married (73.8%) and educated (87.3%) in one way or the other. They obtained their starter or foundation stock mainly from neighbours (80.5%) and the open market (16.0%). The average flock size from the households sampled was 7.9 ± 1.5, whereas the flock structure constituted 56.1% adult females, 27.5% adult intact males, 1.2% castrates and 15.2% kids of both sexes. Survivability, fast growth rate and larger litter size were the farmers\' most preferred quantitative traits, whereas most of these respondents preferred to keep WAD goats which do not have qualitative traits such as horn, wattle and beard. From the findings of the research, it was concluded that the favourable socio-economic characteristics of WAD goat keepers could sustain intensification and increase the productivity of the breed when given the necessary input assistance along the goat value chain. The primary objective of WAD goat farmers is to produce matured animals for various purposes and the breeding goal for a WAD goat breeding programme would be to increase survival, growth rate and litter size of light coat (white, grey and light brown) goats. Finally, most farmers lack knowledge on the significance of tropically beneficial qualitative traits such as horn, wattle, beard and light coat colouration on the survivability, climate adaptability or resilience and productivity of their goats. Educating farmers on the importance of conserving and inclusion of animals possessing such traits in their selection practices under the Government\'s Rearing for Food and Jobs Initiative is therefore suggested.
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