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The paper compares the agricultural heritage conservation schemes of China, Japan and Korea and, in particular, the national programs and their implementation under Food and Agriculture Organization of the United Nations (FAO)’s Globally Important Agricultural Heritage Systems (GIAHS). This comparison allows an understanding of the background of developments, designation criteria, application procedures and implementation structures of GIAHS and of the respective domestic programs in terms of the differences in national circumstances of Japan, China and South Korea. The sequence of implementation of GIAHS and the national program differs in each of the three countries. China introduced a national program after GIAHS designation, Japan has GIAHS but no national program, and Korea implemented a national program before its GIAHS designation. Thus GIAHS candidate sites in China and Korea are now selected from among their respective pools of national agricultural heritage sites. On the other hand, commonalities can be seen in the perspectives of the three countries with regards to agricultural heritage conservation through the common emphasis placed on the designation criteria: historical significance, cultural value, fostering partnerships, rural revitalization and biodiversity conservation associated with the agricultural heritage systems etc. Thus, the cooperation between China, Japan and Korea and the perspectives they have will contribute to proposals for improvements to the FAO designation criteria for GIAHS. These will be comprehensively applicable to both developing and developed countries.  相似文献   
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分七个方面扼要评述我国太阳大气和行星际动力学领域的近期成果:(1)耀斑的储能和释能;(2)日冕物质抛射;(3)行星际准定态结构;(4)行星际扰动和激波传播;(5)太阳风中的阿尔文起伏;(6)太阳宇宙线的传播;(7)磁流体(MHD)计算方法设计.  相似文献   
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Data on hydrography, nutrients, suspended particles, and sedimented particles were collected at weekly intervals from November to May during 1995 to 1997 at a station in the coastal waters of Dona Paula Bay, India. Suspended and sedimented particles were analyzed for total suspended matter (SPM), total sedimented particulate matter (TPM), particulate organic carbon (POC), particulate organic nitrogen (PON), chlorophylla (chla), and diatom abundance. Variations in hydrography and nutrients influenced the quantity and composition of sedimented particles. The TPM, POC, PON, and chla fluxes showed small-scale seasonal variations and were higher in the summer (February to May) than in the winter (November to January). Resuspension of carbon accounted for approximately 25% of the gross POC and was highest in April 1997 (45%). The mean net POC flux was 197±90 mg C m−2 d−1 and accounts for 4.6% of the TPM. The average C∶N (w∶w) ratio of the sedimented material was 13.2±6.6. The POC:chla ratio was relatively higher in the sedimented material as compared to the suspended material. The particulate carbon reaching the bottom sediment was 39% of the primary production. The low organic carbon concentration (approximately 0.1% of dry sediment) in the sediments implies that about 98% of the sedimented carbon was either consumed at the sedimentwater interface or resuspended/advected before it was finally buried into the sediments.  相似文献   
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在日本石川县能登半岛的"能登里山和里海系统"是在人类长期影响之下形成并维持的与高产的沿海地区互联的社会生态生产景观,不仅支撑了传统而多样的农业、林业和渔业产业,同时也维持了当地的生计和丰富的生物多样性。自2011年"能登里山和里海系统"成为全球重要农业文化遗产,地区政府、当地社区、学者、国际机构和私营部门都为其保护和复兴工作积极努力。已采取一些举措如成立"石川里山创成基金"、促进维持与保护石川的里山的点数换礼券制度、"能登米"品牌建设、大学培训课程等等。本文通过近期新计划和已有框架下的保护与复兴工作的案例研究来讨论能登全球重要农业文化遗产的发展。本文还将介绍联合国大学高等研究所石川金泽分所进行的可持续第一产业(SPI)研究项目中有关能登全球农业文化遗产的研究成果和未来方案。  相似文献   
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GPS气象的可靠性检核研究   总被引:1,自引:2,他引:1  
本文通过对GPS湿延迟和水汽辐射计、GPS可降水量与无线电探空资料的比较,进行了GPS气象可靠性检核研究。得出如下结论:GPS可降水量序列与无线电探空的相关性可达0.94;差值均值为-0.24mm;均方根4.0mm。文中对用精密星历及快速预报星历计算所得的GPS湿延迟和水汽辐射计数据进行了比较,在发展趋势上水汽辐射计观测数据与快速预报/精密星历解算出的对流层湿延迟相近,且经过精密星历与快速预报星历反演所得出的的对流层延迟与水汽辐射计数据的差值的均方根分别为1.51cm、1.52cm。  相似文献   
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Approximately ten years have passed since Globally Important Agricultural Heritage Systems (GIAHS) was introduced to Japan in 2011, with 11 GIAHS sites designated so far. The Japan Nationally Important Agricultural Heritage Systems (J-NIAHS), which considers resilience, multi-stakeholder participation and sixth industrialization, was subsequently established in 2016, and has designated 15 J-NIAHS sites. GIAHS sites can be classified into three major types: Landscape, farming method, and genetic resource conservation types, and most Japanese GIAHS sites are of the landscape type. Since there is almost no national subsidy for GIAHS or J-NIAHS, designated sites are expected to secure funding for conservation from their own efforts. For this reason, a voluntary network of the Japanese GIAHS sites has been active in promoting cooperation on GIAHS conservation. The priorities of the Japanese GIAHS have focused on raising public awareness about GIAHS and J-NIAHS, improving livelihoods, as well as fostering the international exchange of experience and knowledge regarding Agricultural Heritage Systems, especially among Japan, China and Korea.  相似文献   
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