This article uses the case of the Sino-Albanian Friendship Trees to examine the significance and the limits of transnational scientific exchange in China during the 1960s and 1970s.In 1964,Albania gave ten thousand ol...This article uses the case of the Sino-Albanian Friendship Trees to examine the significance and the limits of transnational scientific exchange in China during the 1960s and 1970s.In 1964,Albania gave ten thousand olive trees to China as a symbol of the eternal friendship of the Chinese and Albanian people;it was then up to Chinese agricultural scientists and farmers to find suitable means to propagate and cultivate them.The author finds that,though the olive trees served as symbols of international friendship and scientific exchange,knowledge about olive trees produced and circulated in the PRC reflected science in context(that is,science within the national-level political context of 1960s–1970s China)more than knowledge in transit(that is,the transnational circulation of knowledge).The importation of olive trees from Albania ended up offering a new application for Chinese agricultural knowledge and for quintessentially“Cultural Revolution”-era systems of knowledge production and circulation.展开更多
Geographical design of riparian buffers with long-term vegetation cover for environmental restoration in agricultural watersheds needs to assess how much farmland is located in the buffers of a concerned watershed. Tr...Geographical design of riparian buffers with long-term vegetation cover for environmental restoration in agricultural watersheds needs to assess how much farmland is located in the buffers of a concerned watershed. Traditionally, this assessment was done by field surveying and manual mapping, which was a time-consuming and costly process for a large region. In this paper, remote sensing （RS） and geographical information system （GIS） as cost-effective techniques were used to develop a catchments-based approach for identifying critical sites of agricultural riparian buffer restoration. The method was explained through a case study of watershed with ll catchments and results showed that only four of the catchments were eligible in terms of higher priority for riparian buffer restoration. This research has methodological contributions to the spatial assessment of farming intensities in catchments-based riparian buffers across a watershed and to the geographical designs of variable buffering scenarios within catchments. The former makes the catchments-based management strategy possible, and the latter provides alternative restoration scenarios to meet different management purposes, both of which have direct implementations to the environmental restoration of riparian buffers in the real world. This study, thus, highlights the great potential of RS and GIS applications to the planning and management of riparian buffer restoration in agricultural watersheds.展开更多
文摘This article uses the case of the Sino-Albanian Friendship Trees to examine the significance and the limits of transnational scientific exchange in China during the 1960s and 1970s.In 1964,Albania gave ten thousand olive trees to China as a symbol of the eternal friendship of the Chinese and Albanian people;it was then up to Chinese agricultural scientists and farmers to find suitable means to propagate and cultivate them.The author finds that,though the olive trees served as symbols of international friendship and scientific exchange,knowledge about olive trees produced and circulated in the PRC reflected science in context(that is,science within the national-level political context of 1960s–1970s China)more than knowledge in transit(that is,the transnational circulation of knowledge).The importation of olive trees from Albania ended up offering a new application for Chinese agricultural knowledge and for quintessentially“Cultural Revolution”-era systems of knowledge production and circulation.
基金Supported by the "SUST Spring Bud" (No.2008AZZ110)the National Key Technology R&D Program of China (No.2006BAJ15B02)
文摘Geographical design of riparian buffers with long-term vegetation cover for environmental restoration in agricultural watersheds needs to assess how much farmland is located in the buffers of a concerned watershed. Traditionally, this assessment was done by field surveying and manual mapping, which was a time-consuming and costly process for a large region. In this paper, remote sensing （RS） and geographical information system （GIS） as cost-effective techniques were used to develop a catchments-based approach for identifying critical sites of agricultural riparian buffer restoration. The method was explained through a case study of watershed with ll catchments and results showed that only four of the catchments were eligible in terms of higher priority for riparian buffer restoration. This research has methodological contributions to the spatial assessment of farming intensities in catchments-based riparian buffers across a watershed and to the geographical designs of variable buffering scenarios within catchments. The former makes the catchments-based management strategy possible, and the latter provides alternative restoration scenarios to meet different management purposes, both of which have direct implementations to the environmental restoration of riparian buffers in the real world. This study, thus, highlights the great potential of RS and GIS applications to the planning and management of riparian buffer restoration in agricultural watersheds.
