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科学数据
统计数据
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Long-term data set for soil characteristics on a set aside area in North-East Germany
- 负责人：
- Leibniz-Centre For Agricultural Landscape Research (ZALF), Muencheberg, (Germany);;Mirschel Wilfried;;Luzi, Karin;;B?hr, Michael;;Sowa, Dieter
- DOI：
- doi:10.4228/zalf.dk.78
- 摘要：
- s been set-aside since 1992, was used for agriculture until 1991 (recurrent winter rye cultivation). Since 1992 the set-aside area was mulched annually
Iowa Youth and Families Project, 1989-1992;;Version 2
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr26721.v2
- 摘要：
- This data collection contains the first four waves of the Iowa Youth and Families Project (IYFP), conducted in 1989, 1990, 1991, and 1992. The Iowa
Iowa Youth and Families Project, 1989-1992;;Archival Version
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr26721
- 摘要：
- This data collection contains the first four waves of the Iowa Youth and Families Project (IYFP), conducted in 1989, 1990, 1991, and 1992. The Iowa
Data from: Use of classical bird census transects as spatial replicates for hierarchical modeling of an avian community
- 负责人：
- DOI：
- doi:10.5061/dryad.8sf5v66
- 摘要：
- for detection probability. We analyze a classical bird census conducted in the region of Murcia (SE Spain) in 1991 and 1992 and propose a solution to estimating
Eurobarometer 35.1 (1991);;Eurobarometer 35.1 (1991)
- 负责人：
- SOBEMAP, Brüssel;;SOBEMAP, Brüssel;;GFK Danmark\/OBSERVA, Kopenhagen;;GFK Danmark\/OBSERVA, Kopenhagen;;SAMPLE INSTITUT, M?lln;;SAMPLE INSTITUT, M?lln;;KEME, Athen;;KEME, Athen;;PRAGMA Srl, Rom;;PRAGMA Srl, Rom;;ICP-Research, Madrid;;ICP-Research, Madrid;;TMO Consultants, Paris;;TMO Consultants, Paris;;Lansdowne Market Research, Dublin;;Lansdowne Market Research, Dublin;;ILRES, Luxemburg;;ILRES, Luxemburg;;NIPO, Amsterdam;;NIPO, Amsterdam;;NORMA, Lissabon;;NORMA, Lissabon;;NOP, London;;NOP, London;;INRA EUROPE, Brüssel (Fieldwork-Coordination);;INRA EUROPE, Brüssel (Fieldwork-Coordination)
- DOI：
- doi:10.4232/1.2032
- 摘要：
- 1. ) Verhalten beim Kauf und Verkauf von EG-Produkten. Einstellung zum europ?ischen Binnenmarkt 1992. 2. ) Einstellung zum Verkehrsaufkommen
Marsh Ecology Research Program (MERP): Belowground macrophyte production (MBG; 1980-1989) data
- 负责人：
- 关键词：
- prairie wetland ecology wetlands marshes MERP marsh ecology research program wet-dry cycle Delta Marsh marsh management hydrology flooding
- DOI：
- doi:10.5063/aa/duc_merp.160.1
- 摘要：
- Bulletin 18: 245-251. Merendino, M.T., and L.M. Smith. 1991. Influence of drawdown date and subsequent reflood depth on wetland vegetation establishment
Marsh Ecology Research Program (MERP): Turnover plot data (1980-1989)
- 负责人：
- 关键词：
- prairie wetland ecology wetlands MERP marshes wet-dry cycle Delta Marsh marsh management hydrology drawdown flooding
- DOI：
- doi:10.5063/aa/duc_merp.154.5
- 摘要：
- . Merendino, M.T., and L.M. Smith. 1991. Influence of drawdown date and subsequent reflood depth on wetland vegetation establishment. Wildlife Society Bulletin
Marsh Ecology Research Program (MERP): Aboveground Macrophyte Production data (MAG; 1980-1989)
- 负责人：
- 关键词：
- prairie wetland ecology wetlands marshes marsh ecology research program MERP wet-dry cycle Delta Marsh marsh management hydrology drawdown
- DOI：
- doi:10.5063/aa/duc_merp.49.16
- 摘要：
- Bulletin 18: 245-251. Merendino, M.T., and L.M. Smith. 1991. Influence of drawdown date and subsequent reflood depth on wetland vegetation establishment
NIPO weekpeilingen 1991;;NIPO opinion polls 1991
- 负责人：
- DOI：
- doi:10.17026/dans-zbu-cyap
- 摘要：
- Data derived from weekly public opinion polls in the Netherlands in 1991 concerning social and political issues. Samples were drawn from the Dutch
Farm Business Survey, 1991-1992: Special Licence Access;;Farm Business Survey, 1982- : Special Licence Access
- 负责人：
- 关键词：
- DOI：
- doi:10.5255/ukda-sn-3003-1
- 摘要：
- For the third edition (February 2010), the data format and documentation have been updated. This study was previously held in the form of SPSS files generated from a SIR database, which covered two survey years. The depositors have recently undergone a program to compile older data in the FBS series into Access databases, both to improve usability of the older data and compatibility with the later FBS waves, that are already available in Access format. Documentation has also been provided in similar format to current FBS surveys. The <i>Farm Business Survey</i> (FBS) is conducted annually to collect business information from c.2,400 farms in England and Wales. The FBS provides information on the financial position and physical and economic performance of farm businesses, to inform policy decisions on matters affecting farm businesses and to enable analysis of impacts of policy options. It is intended to serve the needs of farmers, farming and land management interest groups, government (both national and European), government partners, and researchers. The primary objective of survey results is to contrast the performance or other business characteristics of different groupings of farm, such as between regions or other geographical or environmental designations, farm types, farm size, age or education of farmer etc.<br><br>Up to and including the 2001/02 survey, FBS estimates were based on matching of the sample between two adjacent years. Farm weights were still calculated to present a matched sample however. From the 2002/03 survey onwards, matching between adjacent years was dropped altogether, and weights are now calculated for the full sample.<br><br>The typology used to determine the FBS farm type classification was revised for 2009 onwards. The FBS typology is now based on standard outputs expressed in euros, with a minimum threshold of 25,000 euro (irrespective of the SLR) for FBS eligibility. Between 2009 and 2011, FBS farm type classification has been based on 2007 standard output (SO) coefficients. From 2012, FBS farm type classification is based on 2010 SO coefficients. The change in typology has had an effect on the distribution of farms by farm type and income averages. Further information regarding the change in typology is available from the 'FBS Documents' section on the gov.uk <a href="https://www.gov.uk/farm-business-survey-technical-notes-and-guidance" title="Farm Business Survey \u2013 technical notes and guidance">Farm Business Survey \u2013 technical notes and guidance</a> webpage.<br><br>The <I>Farm Business Survey</I> is available under Special Licence access conditions. For further details on how to apply for access to the data, see the Access section below.<br><br>
