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Country Youth Investigation (1955)
- 负责人：
- Bund Der Deutschen Landjugend, Bonn
- 关键词：
- KAT53 Family
- DOI：
- doi:10.4232/1.0477
- 摘要：
- ng in the country and life in the country; ties to the land and occupational loyalty; ideas about profitability improvements in agriculture; occupation advic
Survey Of Local Organisations And Economic Development In The Czech Republic, Hungary And Poland (2007).
- 负责人：
- DOI：
- doi:10.5281/zenodo.6881
- 摘要：
- - one above and one below the average level of countrywide economic development (GDP, unemployment rate, rate of agriculture in GDP). 400 organisations
Data from: Feedbacks between nitrogen fixation and soil organic matter increase ecosystem functions in diversified agroecosystems
- 负责人：
- jblesh@umich.edu, Jennifer Blesh
- 关键词：
- agroecosystem biological nitrogen fixation cover crop mineralization particulate organic matter soil carbon soil organic matter
- DOI：
- doi:10.5061/dryad.70q4744
- 摘要：
- Nitrogen (N) losses from intensified agriculture are a major cause of global change, due to nitrate (NO3-) export and the eutrophic
Data from: Do polycultures promote win-wins or tradeoffs in agricultural ecosystem services? A meta-analysis
- 负责人：
- 关键词：
- additive design substitutive design agroecosystems biological control intercropping multifunctionality yield polyculture ecosystem services
- DOI：
- doi:10.5061/dryad.m1m50
- 摘要：
- 1. Agriculture comprises the largest global land use, makes it a leading cause of habitat loss. It is therefore critical to identify how to best
European Communities Study, 1971;;Version 1
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr07275.v1
- 摘要：
- belonging, (2) their awareness of and ideas about agricultural problems, (3) their opinions of the Common Market and European unification, and (4) the amount
European Communities Study, 1971;;Archival Version
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr07275
- 摘要：
- belonging, (2) their awareness of and ideas about agricultural problems, (3) their opinions of the Common Market and European unification, and (4) the amount
Data from: Population genetic structure in a social landscape: barley in a traditional Ethiopian agricultural system
- 负责人：
- 关键词：
- Agriculture Conservation Genetics Crop Genetic Resources Ethiopia Landraces Farmer Seed Systems
- DOI：
- doi:10.5061/dryad.nk143
- 摘要：
- . The expansion of population genetic approaches into traditional agricultural systems requires understanding how social factors contribute to that landscape
Data from: Consequences of extensive habitat fragmentation in landscape-level patterns of genetic diversity and structure in the Mediterranean
- 负责人：
- DOI：
- doi:10.5061/dryad.nv5j5
- 摘要：
- analyses based on circuit theory showed that agricultural land offers ~1000 times more resistance to gene flow than semi-natural habitats, indicating that patterns
Co-Operative Farmers 1990\/1991 (Supplementary Survey)
- 负责人：
- Institut Fuer Sozialdatenanalyse, Berlin
- DOI：
- doi:10.4232/1.6438
- 摘要：
- al-biological agriculture products; influence of farming family companies in the FRG on privatization decision; personal preparation for new requirements; problems
Data from: Genomics assisted ancestry deconvolution in grape
- 负责人：
- DOI：
- doi:10.5061/dryad.45hh0
- 摘要：
- ammes, we present a principal components analysis (PCA) based ancestry estimation method to calculate admixture proportions of hybrid grapes in the United States Department of Agriculture
