2,968,187 research outputs found
Opium and China
No full textLater published as "Opium in China," in the British Journal of Addiction 64:3 (January 1970): 371-82
China Club
No full textA model organization for the formation of the China Society of Southern California
Spatio-temporal changes in biomass carbon sinks in China's forests from 1977 to 2008
No full textForests play a leading role in regional and global carbon (C) cycles. Detailed assessment of the temporal and spatial changes in C sinks/sources of China's forests is critical to the estimation of the national C budget and can help to constitute sustainable forest management policies for climate change. In this study, we explored the spatio-temporal changes in forest biomass C stocks in China between 1977 and 2008, using six periods of the national forest inventory data. According to the definition of the forest inventory, China's forest was categorized into three groups: forest stand, economic forest, and bamboo forest. We estimated forest biomass C stocks for each inventory period by using continuous biomass expansion factor (BEF) method for forest stands, and the mean biomass density method for economic and bamboo forests. As a result, China's forests have accumulated biomass C (i.e., biomass C sink) of 1896 Tg (1 Tg=10(12) g) during the study period, with 1710, 108 and 78 Tg C in forest stands, and economic and bamboo forests, respectively. Annual forest biomass C sink was 70.2 Tg C a(-1), offsetting 7.8% of the contemporary fossil CO2 emissions in the country. The results also showed that planted forests have functioned as a persistent C sink, sequestrating 818 Tg C and accounting for 47.8% of total C sink in forest stands, and that the old-, mid- and young-aged forests have sequestrated 930, 391 and 388 Tg C from 1977 to 2008. Our results suggest that China's forests have a big potential as biomass C sink in the future because of its large area of planted forests with young-aged growth and low C density.BiologySCI(E)PubMed11ARTICLE7661-6715
Financial Security of Elders in China
Full text linkChina is one of the largest countries in the world in terms of both geography and population size, with lower economic levels compared to the developed countries, and great regional differences. This paper introduces the rapid demographic changes of the Chinese population and the current financial security of elders in China. The World Bank’s multi-pillar model is used to explain the financial security of elders in China, which includes the current pension and health care systems in urban and rural areas in China respectively. The important issues of financial security of elders which the Chinese government should address in the near future are also discussed. The paper concludes with a consideration of the results of social welfare system reforms by the Chinese government and future research interests from a geographer’s perspective.Financial security, elders, social welfare system, China
1% Sample of the 1990 China Population Census Data. SPSS Files.
No full textOn July 1, 1990, the People's Republic of China conducted the country's 4th national census. More than 1.1 billion persons were counted in the 1990 census. The 1990 census questionnaire contained some 19 items (see the Codebook in this collection), including the following: name; relationship; sex; age; nationality (self id); registration status; for persons 6 years +: education; for persons age 15 years +: industry; occupation; "nonworking" person status; marital status; residence in 1985; for women aged 15-64: # children ever born; # children surviving; for women aged 15-49: birth and birth order in 1989; household items: HH type (domestic or collective); HH serial No.; # of persons in HH; # of births in HH in 1989; # of deaths in HH in 1989; # of registered persons absent from the HH, and the name and sex. The main source of data from the 1990 census is: Population Census Office under the State Council 1991, Major Figures of the Fourth National Population Census of China, Beijing: China Statistical Publishing House. The China Population and Information Research Center subsequently released a 1% Sample of the individual questionnaires from the 1990 Census. This is the 1% 1990 China Census data-set now residing in the China Archives collection. The data-set on the China Archive consists of separate 1% samples for each of China's three municipalities (Beijing, Shanghai and Tianjin) and provinces and autonomous areas. The total number of cases in this 1% sample is over 11 million. The data are available line by line (one line per case) in a "dat" format
1% Sample of the 1990 China Population Census Data. SPSS Files.
No full textOn July 1, 1990, the People's Republic of China conducted the country's 4th national census. More than 1.1 billion persons were counted in the 1990 census. The 1990 census questionnaire contained some 19 items (see the Codebook in this collection), including the following: name; relationship; sex; age; nationality (self id); registration status; for persons 6 years +: education; for persons age 15 years +: industry; occupation; "nonworking" person status; marital status; residence in 1985; for women aged 15-64: # children ever born; # children surviving; for women aged 15-49: birth and birth order in 1989; household items: HH type (domestic or collective); HH serial No.; # of persons in HH; # of births in HH in 1989; # of deaths in HH in 1989; # of registered persons absent from the HH, and the name and sex. The main source of data from the 1990 census is: Population Census Office under the State Council 1991, Major Figures of the Fourth National Population Census of China, Beijing: China Statistical Publishing House. The China Population and Information Research Center subsequently released a 1% Sample of the individual questionnaires from the 1990 Census. This is the 1% 1990 China Census data-set now residing in the China Archives collection. The data-set on the China Archive consists of separate 1% samples for each of China's three municipalities (Beijing, Shanghai and Tianjin) and provinces and autonomous areas. The total number of cases in this 1% sample is over 11 million. The data are available line by line (one line per case) in a "dat" format
Connecting the dots: Chinese scholars on Christianity in China today
No full textFinal lecture of the Martin D'Arcy Memorial lecture series on Christianity in China, in this lecture, Dr Wu looks at the various perspectives on how Chinese and western scholars understand christianity in china and also cross-cultural studies
Patterns and determinants of wood physical and mechanical properties across major tree species in China
No full textThe physical and mechanical properties of wood affect the growth and development of trees, and also act as the main criteria when determining wood usage. Our understanding on patterns and controls of wood physical and mechanical properties could provide benefits for forestry management and bases for wood application and forest tree breeding. However, current studies on wood properties mainly focus on wood density and ignore other wood physical properties. In this study, we established a comprehensive database of wood physical properties across major tree species in China. Based on this database, we explored spatial patterns and driving factors of wood properties across major tree species in China. Our results showed that (i) compared with wood density, air-dried density, tangential shrinkage coefficient and resilience provide more accuracy and higher explanation power when used as the evaluation index of wood physical properties. (ii) Among life form, climatic and edaphic variables, life form is the dominant factor shaping spatial patterns of wood physical properties, climatic factors the next, and edaphic factors have the least effects, suggesting that the effects of climatic factors on spatial variations of wood properties are indirectly induced by their effects on species distribution.SCI(E)PubMed中国科学引文数据库(CSCD)[email protected]
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