筛选
科学数据
统计数据
共检索到355条 ,权限内显示50条;
Multivariable field trial data sets of organic and extensive cropping systems for agro-ecosystem modelling in 1992-1998 from Müncheberg,Germany
- 负责人:
- Leibniz Centre For Agricultural Landscape Research (ZALF) E.V. , Müncheberg (Germany);;Research Platform Models And Simulation, Leibniz Centre For Agricultural Landscape Research (ZALF)E.V.;;Science, German National Library Of
- 关键词:
- crop agriculture ecosystem model soil soil water crop rotation yield (agricultural) management weather
- DOI:
- doi:10.4228/zalf.1992.366
- 摘要:
- (water and nitrogen contents), crop (ontogenesis, plant, tiller and ear numbers, above-ground and root biomasses, yield, carbon and nitrogen content in biomass and thei
Data from: Two-thirds of global cropland area impacted by climate oscillations
- 负责人:
- Heino, Matias
- DOI:
- doi:10.5061/dryad.6h5p0
- 摘要:
- and Latin America. Besides ENSO, the Indian Ocean Dipole (IOD) and the North Atlantic Oscillation (NAO) are known to impact crop yields worldwide. Here, we assess
Field Crop Boundaries
- 负责人:
- South African Environmental Observation Network
- 关键词:
- biomass potential agriculture crop 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: Impacts of honeybee density on crop yield: a meta-analysis
- 负责人:
- Rollin, Orianne
- 关键词:
- crop yield Apis mellifera colony density visitation rate fruit set seed set fruit weight management strategy
- DOI:
- doi:10.5061/dryad.dj5f7kc
- 摘要:
- visitation rates) and crop productivity (fruit set, seed set, fruit weight, and/or yield). Effect sizes were represented as the difference in crop productivity bet
Data from: Biological pest control and yields depend on spatial and temporal crop cover dynamics
- 负责人:
- 关键词:
- agri-environmental schemes dilution effects ecosystem services inter-annual population dynamics oilseed rape parasitism pollen beetles resource concentration hypothesis
- DOI:
- doi:10.5061/dryad.q9690
- 摘要:
- s of spatiotemporal changes in crop area on crop yields and crop–herbivore–antagonist interactions have been rarely considered, in contrast to documented beneficial effect
Data from: Life history traits and phenotypic selection among sunflower crop-wild hybrids and their wild counterpart: implications for crop allele
- 负责人:
- 关键词:
- phenotypic selection introgression hybrid zone evolution life history traits demographic swamping genetic assimilation early season traits
- DOI:
- doi:10.5061/dryad.p0kj9
- 摘要:
- r among hybrid generations. Understanding these dynamics in crop-wild hybrid zones can clarify crop-like traits likely to introgress into wild pop
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:
- crop diversity. The results provide a novel perspective on the ongoing globalization of food systems worldwide, and bolster evidence for the importance
NPP Cropland: Gridded Estimates for the Central U.S.A., 1982-1996
- 负责人:
- DOI:
- doi:10.5063/aa/nceas.184.2
- 摘要:
- ; (2) conversion from fresh weight to dry weight; (3) estimation of above-ground yield using crop harvest indices, defined as the ratio of economic pro
NPP Cropland: Gridded Estimates for the Central U.S.A., 1982-1996
- 负责人:
- DOI:
- doi:10.5063/aa/nceas.184.8
- 摘要:
- ; (2) conversion from fresh weight to dry weight; (3) estimation of above-ground yield using crop harvest indices, defined as the ratio of economic pro
NPP Cropland: Gridded Estimates for the Central U.S.A., 1982-1996
- 负责人:
- DOI:
- doi:10.5063/aa/nceas.184.1
- 摘要:
- ; (2) conversion from fresh weight to dry weight; (3) estimation of above-ground yield using crop harvest indices, defined as the ratio of economic pro