检索结果-南通市图书馆

Responses of water use efficiency to phenology in typical subtropical forest ecosystems——A case study in Zhejiang Province

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2020年第1期63卷 145-156页

作者： Fengsheng GUO jiaxin jin Bin YONG Ying WANG Hong JIANG State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai UniversityNanjing 210098China School of Earth Sciences and Engineering Hohai UniversityNanjing 211100China School of Culture Industry and Tourism Management Sanjiang UniversityNanjing 210012China International Institute for Earth System Science Nanjing UniversityNanjing 210023China

Ecosystem-scale water-use efficiency(WUE) is an important indicator for understanding the intimately coupled relationship between carbon and water cycles in ecosystems. Previous studies have suggested that both abiotic and biotic factors have significant effects on WUE in forest ecosystems. However, responses of WUE to phenology in the context of climate change remain poorly understood. In this study, we analyzed the sensitivity and response patterns of seasonal WUE to phenology in Zhejiang Province where typical subtropical forest ecosystems are located, and discussed potential causes of the changes of the sensitivity and response patterns along different climate gradient during 2000–2014. The results of interannual partial correlation analysis showed widespread negative correlations between WUE and the start of growing season(SOS) in spring. This is because the increase in gross primary product(GPP) is larger than that of evapotranspiration(ET), resulting from an advanced SOS. The positive correlation between WUE and SOS was widely observed in summer mainly because of water stress and plant ecological strategy. The autumn WUE enhanced with the delay in the end of growing season(EOS)mainly because of the increase in GPP meanwhile the decrease or steadiness in ET, resulting from a delayed EOS. In space, the sensitivity of spring WUE to SOS significantly decreased along the radiation gradient, which might be related to strong soil evaporation in high radiation area;the sensitivity of WUE to SOS in summer showed a positive correlation with precipitation and a negative correlation with temperature, respectively, which might be attributed to the compensation of GPP to the delayed SOS and water stress caused by high temperature. The sensitivity of WUE to EOS increased significantly along the radiation and precipitation gradients in autumn, which may be because the increase of radiation and precipitation provides more water and energy for photosynthesis.

关键词： Water-use efficiency Gross primary product Evapotranspiration Phenology Climate gradient Forest

Improvement of ecological geographic regionalization based on remote sensing and canonical correspondence analysis： A case study in China

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2016年第9期59卷 1745-1753页

作者： jin jiaxin WANG Ying JIANG Hong KONG Yan LU XueHe ZHANG XiuYing Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology Nanjing University Nanjing 210023 China International Institute for Earth System Science Nanjing University Nanjing 210023 China Information Center of Urban Planning Wuxi 214072 China

Ecological geographic regions, also called eco-regions, can be used to divide a remotely sensed image, which is helpful for reducing the complexity of land cover types within eco-regions and for improving the classification accuracy of land cover. In this case study in China, we improved a method of ecological geographic regionalization that is more suitable for remote sensing mapping of regional land cover, and we obtained new eco-regions. The canonical correspondence analysis(CCA) and k-means clustering were adopted in the ecological geographic regionalization using both seasonal remotely-sensed vegetation information and environmental data including climate, elevation and soil features. Our results show that the combination of seasonal vegetation information and the CCA performed well in the selection of the dominant environmental factor of the biogeographic pattern, and it can be used as regionalization indicators of eco-regions. We found that thermal factors are the most important driving forces of the biogeographic pattern in China, which followed by moisture factors. Two global land cover products(MODIS MCD12C1 and Glob Cover) were used to assess our eco-regions. The results show that our eco-regions performed better than that of a previous study regarding the complexity of land cover types, such as in the number of types and the proportional area of the major/secondary type. These results indicate that the method of ecological geographic regionalization, which is based on environmental factors associated with seasonal vegetation features, is effective for reducing the regional complexity of land cover.

关键词： Ecological geographic regionalization Remote sensing Canonical correspondence analysis k-means clustering Land cover

风险社会中突发危机事件的舆情传播与风险沟通

在线全文

学校读者我要写书评

暂无评论

学习与实践 2022年第3期 123-132页

作者：金家新西南政法大学马克思主义学院重庆401120

本文运用社会学、传播学、行政管理学等多学科视角,解析风险沟通在人类应对恒常性风险与突发危机事件中的重要性,探讨互联网条件下舆情传播与风险沟通过程中信息重塑、风险重塑、舆情危机与舆情极化的形成机制,认为其中内在的特点是产... 详细信息

本文运用社会学、传播学、行政管理学等多学科视角,解析风险沟通在人类应对恒常性风险与突发危机事件中的重要性,探讨互联网条件下舆情传播与风险沟通过程中信息重塑、风险重塑、舆情危机与舆情极化的形成机制,认为其中内在的特点是产生舆情危机的重要原因。研究认为,我国在突发危机事件的舆情管理与引导上存在的诸多不足是诱致舆情危机甚至极化的另一重要原因,且负性的风险沟通投射于政府并进行意识形态解构。为推进国家治理体系和治理能力现代化,防范并化解社会风险,应完善法律对网络舆情与风险沟通的管制、引导与保护,与此同时,政府需要树立科学预警与主动预防的风险沟通理念、构建协调一致的“共同体”治理体制、培养良好的社会心态与网络理性。

关键词：突发危机事件舆情传播风险沟通善治路径

乡村振兴战略背景下民族传统文化资源与社会资本的互嵌式开发运用

在线全文

学校读者我要写书评

暂无评论

西南民族大学学报（人文社会科学版） 2023年第12期44卷 21-29页

作者：金家新中国药科大学马克思主义学院江苏南京211198

为探寻乡村振兴战略背景下民族传统文化资源与社会资本互嵌式开发何以必要、何以可能,本研究基于价值逻辑、资本逻辑与现实逻辑进行考察论证,认为互嵌式发展能够彰显文化力价值,形成“经济发展”与“文化弘扬”的良性互动,在实现共同富... 详细信息

为探寻乡村振兴战略背景下民族传统文化资源与社会资本互嵌式开发何以必要、何以可能,本研究基于价值逻辑、资本逻辑与现实逻辑进行考察论证,认为互嵌式发展能够彰显文化力价值,形成“经济发展”与“文化弘扬”的良性互动,在实现共同富裕与乡村振兴的过程中不断提升民族文化自信并增强中华民族的凝聚力。研究对互嵌式开发过程中的产权界定与收益分配进行了问题检视与原因探索,认为这一过程必将引发产权主体的分散化、利益相关者的复杂化以及利益诉求的多元化。研究认为,民族传统文化的资本化运作,将为传统文化资源的活态性传承与现代性发展创造有利条件,并为民族成员之间增进相互了解、形成共同体意识提供平台。研究提出了互嵌式开发的理路与策略,认为需要依法提升治理的现代化水平,凸显法的价值性与法的技术性,综合研判并遵循互嵌式开发的设计原则与优化策略。这些原则包括:产权明确原则、传承人市场产权优先获得原则、传统文化资源的现代性表达原则。其优化策略主要包括:建立并完善民族传统文化资源产权的评估体系与服务体系、着力发展文化产业新业态以促进“文化力”与“经济力”的双向实现、加大政策性文化金融扶持力度并促进文化金融产品的有序发展。

关键词：民族传统文化资源社会资本文化力互嵌开发治理现代化

在线全文

学校读者我要写书评

暂无评论

学校道德教育新析:基于承认理论

教育学术月刊 2013年第3期 71-75页

作者：金家新西南大学教育学部

针对当前学校道德教育主体互不对等,缺乏交流互动,学校德育与家庭教育、社会德育互不兼容,不相承认的现状,基于构建教育者与受教育者人格完满的愿景出发,试图揭示"承认"在学校道德教育场域中的意义及可行路径。

关键词：学校德育承认意义路径

大学章程在大学法人化治理中的价值向度与法律限度

在线全文

学校读者我要写书评

暂无评论

南京社会科学 2014年第12期 128-135页

作者：金家新张力西南政法大学马克思主义学院西南政法大学民商法学院

大学章程通过对举办者、办学者及其他利益相关者的意志与权利进行确认,并对各相关权利主体进行制度性的规约,起到了理性化的价值引导与依法治理的保障作用。在创建中国特色的现代大学制度过程中,大学章程能不能被视作一种法律,在多大范... 详细信息

大学章程通过对举办者、办学者及其他利益相关者的意志与权利进行确认,并对各相关权利主体进行制度性的规约,起到了理性化的价值引导与依法治理的保障作用。在创建中国特色的现代大学制度过程中,大学章程能不能被视作一种法律,在多大范围内多大程度上发挥作用,需要理性地审视。研究以中外比较、历史比较、现实发展的视角探讨了我国大学章程的法律效力及其限度。大学章程需要基于"自主管理"的诉求,以"共治"的方式实现现代大学制度的"法治"化,以期实现大学的本质价值追求。

关键词：公立大学现代大学制度章程价值法律限度