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共检索到646条 ,权限内显示50条;
Data from: Origins of food crops connect countries worldwide
- 负责人：
- Khoury, Colin
- 关键词：
- food security crop diversity crop origins plant genetic resources crop domestication crop improvement
- DOI：
- doi:10.5061/dryad.s08t2
- 摘要：
- duction systems (69.3% of crops grown are foreign). Foreign crop usage has increased significantly over the past 50 years, including in countries with high indigenous
Field Crop Boundaries
- 负责人：
- South African Environmental Observation Network
- 关键词：
- crop biomass potential agriculture crop cultivation extent Agriculture Commercial cropping systems Socio-economic Economic activity Land Transformation
- DOI：
- doi:10.15493/bea.data.10000089
- 摘要：
- "Data on field crop extent and type of cultivation was obtained from DAFF for the whole of South Africa. This was reviewed for consistency
Data from: The influence of crop tiller density on the breeding performance of a cereal-nesting specialist
- 负责人：
- Setchfield, Rosemary
- 关键词：
- corn bunting breeding performance farmland bird cereal crop crop management nest site selection nest survival ecological trap edge effect intensive agriculture
- DOI：
- doi:10.5061/dryad.g4t3s
- 摘要：
- In the pursuit of maximizing agricultural yields and profits, crop management under intensive agriculture has reduced the heterogeneity of crop sward
Data from: How to escape from crop-to-weed gene flow: phenological variation and isolation-by-time within weedy sunflower populations
- 负责人：
- Roumet, Marie
- DOI：
- doi:10.5061/dryad.17qs8
- 摘要：
- The evolution of crop-related weeds may be constrained by recurrent gene flow from the crop. However, flowering time variation within weedy
2013 AAFC Crop Type Map of Canada
- 负责人：
- DOI：
- doi:10.5203/lwbin.aafc.2013.1
- 摘要：
- the process of generating annual crop type digital maps.Focusing on the Prairie Provinces in 2009 and 2010, a Decision Tree (DT) based methodology was applied
Data from: Impacts of honeybee density on crop yield: a meta-analysis
- 负责人：
- Rollin, Orianne
- 关键词：
- Apis mellifera colony density visitation rate crop yield fruit set seed set fruit weight management strategy
- DOI：
- doi:10.5061/dryad.dj5f7kc
- 摘要：
- 1. There is increasing recognition that pollination deficits are limiting crop yields worldwide. However, management strategies for op
Khalil:CH4 and N2O Emissions From Sub-tropical Rice Agriculture In China
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.883.2
- 摘要：
- ng the growing seasons. These factors tend to reduce methane emissions. But the rice straw and crop residues from the first crop of the year are plowed into the fields
Khalil:CH4 and N2O Emissions From Sub-tropical Rice Agriculture In China
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.883.1
- 摘要：
- ng the growing seasons. These factors tend to reduce methane emissions. But the rice straw and crop residues from the first crop of the year are plowed into the fields
Khalil:CH4 and N2O Emissions From Sub-tropical Rice Agriculture In China
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.883.4
- 摘要：
- ng the growing seasons. These factors tend to reduce methane emissions. But the rice straw and crop residues from the first crop of the year are plowed into the fields
Data from: Sensitivity of the farmland bird community to crop diversification in Sweden: does the CAP fit?
- 负责人：
- Josefsson, Jonas
- 关键词：
- agri-environment schemes Common Agricultural Policy crop diversification farmland birds landscape composition landscape complexity mosaic landscapes multifunctional agriculture wildlife conservation land use
- DOI：
- doi:10.5061/dryad.0g794
- 摘要：
- Crop diversification has been introduced as an environmental strategy in the ‘Greening’ of the EU Common Agricultural Policy (CAP) for 2015–2020
