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| 1 | The spatio-temporal variations of frost-free period in China from 1951 to 2012显示文摘The frost-free period(FFP)first frost date(FFD) and last frost date(LFD) have been regard as the important climate variables for agricultural production. Understanding the spatio-temporal variations of the FFPFFD and LFD is beneficial to reduce the harmful impacts of climate change on agricultural production and enhance the agricultural adaptation. This study examined daily minimum temperatures for 823 national-level meteorological stationscalculated the values of FFDLFD and FFP for station-specific and region-specific from 1951 to 2012estimated the gradients of linear regression for station-specific moving averages of FFDLFD and FFPand assessed station-specific time series of FFP and detected the abrupt change. The results as follows: at both the station level and the regional levelthe FFP across China decreases with the increase of latitude from south to northand with the increase of altitude from east to west generally. At the station levelthe inter-annual fluctuations of FFDLFD and FFP in south and west agricultural regions are greater than those in north and east. At the regional levelexcluding the QT regiontemporal changes of FFP are relatively small in both the low-latitude and the high-latitude regionsbut for the mid-latitude regions. According to the linear trend gradients of the moving average values of station-specific FFDLFD and FFPFFD was delayedLFD advancedand FFP extended gradually over the 80% of China. Furthermorethe change magnitudes for FFDLFD and FFP in the north and east agricultural regions are higher than that in the southern and western. Among the 659 station-specific time series of FFP examined by the Mann-Kendall test341 stationslocated mainly in the north regionhave one identifiable and significant abrupt change. And at the 341 stations with identified abrupt changesmost(57%) abrupt changes occurred during 1991–2012followed by the periods of 1981–1990(28%)1971–1980(12%)and 1951–1970(3%). The spatio-temporal variations of FFDLFD and FFP would provide important guidance to agricultural practices. | NING Xiaoju LIU Gangjun ZHANG Lijun QIN Xiaoyang ZHOU Shenghui QIN Yaochen | 2017 | Journal of Geographical Sciences2017，27，1： | 2 |
| 2 | A high-quality sponge gourd(Luffa cylindrica)genome显示文摘Sponge gourd(Luffa cylindrica)is an important cultivated vegetable and medicinal plant in the family Cucurbitaceae.In this study,a draft genome sequence of the sponge gourd inbred line P93075 was analyzed.Using Illumina,PacBio,and 10×Genomics sequencing techniques as well as new assembly techniques such as FALCON and chromatin interaction mapping(Hi-C),a chromosome-scale genome of approximately 656.19 Mb,with an N50 scaffold length of 48.76 Mb,was generated.From this assembly,25,508 protein-coding gene loci were identified,and 63.81%of the whole-genome consisted of transposable elements,which are major contributors to the expansion of the sponge gourd genome.According to a phylogenetic analysis of conserved genes,the sponge gourd lineage diverged from the bitter gourd lineage approximately 41.6 million years ago.Additionally,many genes that respond to biotic and abiotic stresses were found to be lineage specific or expanded in the sponge gourd genome,as demonstrated by the presence of 462 NBS-LRR genes,a much greater number than are found in the genomes of other cucurbit species;these results are consistent with the high stress resistance of sponge gourd.Collectively,our study provides insights into genome evolution and serves as a valuable reference for the genetic improvement of sponge gourd. | Haibin Wu Gangjun Zhao Hao Gong Junxing Li Caixia Luo Xiaoli He Shaobo Luo Xiaoming Zheng Xiaoxi Liu Jinju Guo Junqiu Chen Jianning Luo | 2020 | Horticulture Research2020，7，1： | 2 |
| 3 | Assessing regional sustainability:the case of land use and land cover change in the Middle Yi luo catchment of the Yellow River basin显示文摘 | Li Xiaojian Peterson J Liu Gangjun | 2001 | China Applied Geography2001，，21： | 1 |
| 4 | Assessing regional sustainability: the case of land use and land cover change in the Middle Yiluo catchment of the Yellow River basin, China 显示文摘 | Xiaojian Peterson J Liu Gangjun Qian Lexian | 2001 | Applied Geography2001，21，： | 1 |
| 5 | Assessing regional sustainability: the case of land use and land cover change in the Middle Yi luo catchment of the Yellow River basin 显示文摘 | Li Xiaojian Peterson J Liu Gangjun | 2001 | China Applied Geography2001，，21： | 1 |
| 6 | Assessing regional sustainability: the case of land use and land cover change in the middle Yiluo catchment of the Yellow River Basin 显示文摘 | Li Xiaojian Jim Peterson Liu Gangjun | 2001 | Applied Geography2001，21，1： | 1 |
| 7 | Assessing Regional Sustainability: The Case of Land Use and Land Cover Change in the Middle Yiluo Catchment of the Yellow River Basin 显示文摘 | Li Xiaojian Peterson J Liu Gangjun | 2001 | China Applied Geography2001，，21： | 1 |
| 8 | Deformation monitoring and analysis using Victorian re gional CORS data显示文摘 | ZHANG KEFEI HU YOUJIAN LIU GANGJUN | 2005 | Journal of Global Positioning Sys tems2005，4，1： | 1 |
| 9 | Deformation Monitoring and Analysis Using Victorian Regional CORS Data显示文摘 | KEFEI ZHANG YOUJIAN HU GANGJUN LIU | 2005 | Journal of GPS2005，4，1： | 1 |
| 10 | Assessing re- gional sustainability: the case of land use and land cover change in the Middle Yi luo catchment of the Yellow River'basin 显示文摘 | Li Xiaojian Peterson J Liu Gangjun | 2001 | China Applied Geography2001，，21： | 1 |
| 11 | GIS-based landslide hazard assessment: an overview显示文摘 | Wang Huabin Liu Gangjun Xu Weiya | 2005 | Progress in Physical Geography2005，29，4： | 1 |
| 12 | De formation monitoring and analysis using victorian re- gional CORS data 显示文摘 | ZHANG Kefei HU Youjian LIU Gangjun | 2005 | Journal of Global Positioning System2005，4，1： | 1 |
| 13 | Multi-scale integrated assessment of urban energy use and CO_2 emissions显示文摘Accurate and detailed accounting of energy-induced carbon dioxide(CO2) emissions is crucial to the evaluation of pressures on natural resources and the environment, as well as to the assignment of responsibility for emission reductions. However, previous emission inventories were usually production- or consumption-based accounting, and few studies have comprehensively documented the linkages among socio-economic activities and external transaction in urban areas. Therefore, we address this gap in proposing an analytical framework and accounting system with three dimensions of boundaries to comprehensively assess urban energy use and related CO2 emissions. The analytical framework depicted the input, transformation, transfer and discharge process of the carbon-based(fossil) energy flows through the complex urban ecosystems, and defined the accounting scopes and boundaries on the strength of ‘carbon footprint' and ‘urban metabolism'. The accounting system highlighted the assessment for the transfer and discharge of socio-economic subsystems with different spatial boundaries. Three kinds methods applied to Beijing City explicitly exhibited the accounting characteristics. Our research firstly suggests that urban carbon-based energy metabolism can be used to analyze the process and structure of urban energy consumption and CO2 emissions. Secondly, three kinds of accounting methods use different benchmarks to estimate urban energy use and CO2 emissions with their distinct strength and weakness. Thirdly, the empirical analysis in Beijing City demonstrate that the three kinds of methods are complementary and give different insights to discuss urban energy-induced CO2 emissions reduction. We deduce a conclusion that carbon reductions responsibility can be assigned in the light of production, consumption and shared responsibility based principles. Overall, from perspective of the industrial and energy restructuring and the residential lifestyle changes, our results shed new light on the analysis on the evolutionary mechanism and pattern of urban energy-induced CO2 emissions with the combination of three kinds of methods. And the spatial structure adjustment and technical progress provides further elements for consideration about the scenarios of change in urban energy use and CO2 emissions. | ZHANG Lijun LIU Gangjun QIN Yaochen | 2014 | Journal of Geographical Sciences2014，24，4： | 1 |
| 14 | Assessing regional sustainability:the case of land use and land cover change in the middle Yiluo catchment of the Yellow River Basin显示文摘 | Li Xiaojian Jim Peterson Liu Gangjun | 2001 | Applied Geography2001，21，1： | 1 |
| 15 | Assessing regional sustainability: the case of land use and land cover change in the Middle Yiluo catchment of the Yellow River basin, China 显示文摘 | Li Xiaojian Peterson J Liu Gangjun Qian Lexian | 2001 | Applied Geography2001，21，： | 1 |
| 16 | Assess-ing regional sustainability: The case of land use and landcover change in the middle Yiluo catchment of theYellow River basin,China 显示文摘 | Li Xiaojian Jim Peterson Liu Gangjun | 2011 | Applied Geography2011，21，1： | 1 |
| 17 | Assessing regional sustainability: the case of land use and land cover change in the Middle Yiluo catchment of the Yellow River basin, China 显示文摘 | Li Xiaojian Peterson J Liu Gangjun Qian Lexian | 2001 | Applied Geography2001，21，： | 1 |
| 18 | Assessing regional sustainability: land use and land cover change in the middle Yiluo catchment of Yellow Basin显示文摘 | Li Xiaojian Peterson J Liu Gangjun Qian Lexian | 2001 | Applied Geography2001，21，1： | 1 |
| 19 | High-resolution imaging of microvasculature in human skin in-viva with optical coherence tomography显示文摘 | Gangjun Liu Wangcun Jia Victor Sun | 2012 | Opt Express2012，20，7： | 1 |
| 20 | Assessing regional sustainability: the case of land use and land cover change in the middle Yiluo catchment of the Yellow River Basin显示文摘 | Li Xiaojian Jim Peterson Liu Gangjun | 2001 | Applied Geography2001，21，1： | 1 |
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