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共检索到178条 ,权限内显示50条;
NPP Cropland: Gridded Estimates for the Central U.S.A., 1982-1996
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.184.7
- 摘要：
- for 1992, and in Iowa from 1982 to 1996. Many counties in these eight states had over 70 per cent coverage of these crops. In Iowa, corn and soybean
Africa RISING Project
- 负责人：
- 关键词：
- DOI：
- doi:10.34725/dvn/25792
- 摘要：
- of provisioning services (income, fuel, livestock feed, crops, labour.)
Data from: A customized nuclear target enrichment approach for developing a phylogenomic baseline for Dioscorea yams (Dioscoreaceae)
- 负责人：
- DOI：
- doi:10.5061/dryad.4n2fk97
- 摘要：
- ng a preliminary taxon sampling that includes both distantly and closely related taxa, including several yam crops and potential crop wild relatives (CWRs
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：
- hication of aquatic systems as well as emissions of nitrous oxide (N2O) into the atmosphere. Diversified agroecosystems with legume cover crops couple N and carbon (C) inputs
Data from: Novel loci underlie natural variation in vitamin E levels in maize grain
- 负责人：
- 关键词：
- DOI：
- doi:10.5061/dryad.5t8d9
- 摘要：
- hyll biosynthetic enzymes that explain the majority of tocopherol variation, which was not predicted, given that, like most major cereal crops, maize grain is non-photosynthetic
Data from: Landscape context shifts the balance of costs and benefits from wildflower borders on multiple ecosystem services
- 负责人：
- Grab, Heather
- 关键词：
- Ecological intensification Wildflower Strips Landscape Pollination Biological Control Crop Yield
- DOI：
- doi:10.5061/dryad.425kd01
- 摘要：
- ease yields by promoting bee visitation to adjacent crops only in landscapes with intermediate natural habitat cover. Flowering borders had little impact
Data from: Food and nutrient gaps in rural Northern Ghana: does production of smallholder farming households support adoption of food-based
- 负责人：
- de Jager, Ilse
- 关键词：
- Optimised diets food self-sufficiency food coverage nutrient coverage crop diversity dietary diversity nutrient adequacy rural farming households low and middle income population
- DOI：
- doi:10.5061/dryad.pq37vn6
- 摘要：
- and accessibility of the households, especially that of fruits and vegetables, such as diversification of the crops grown, increased production of specific crops
Data from: Maize-dominated landscapes reduce bumble bee colony growth through pollen diversity loss
- 负责人：
- Hass, Annika
- 关键词：
- bumble bee colony growth crop diversity configurational heterogeneity landscape heterogeneity maize pollinator pollen oilseed rape
- DOI：
- doi:10.5061/dryad.1c8h2kj
- 摘要：
- ls of crop rotation, does not contribute to this aim. In contrast, crop identity and timing of mass-flowering crops turned out to be important factors, as maize reduced
Tree Shelterbelts as an Element to Improve Water Resource Management in Central Asia
- 负责人：
- Thevs, Niels
- 关键词：
- DOI：
- doi:10.7910/dvn/0kkj09
- 摘要：
- × 200 m) field size, water consumption of the crop-shelterbelt systemwas higher for all crops investigated except for pear. The results suggest tha
Data from: Assessing the distribution of disease-bearing rodents in human-modified tropical landscapes
- 负责人：
- DOI：
- doi:10.5061/dryad.m0s63
- 摘要：
- , increasing urbanisation) were found to favour the presence of synanthropic rodent species such as Rattus tanezumi, known to damage crops and host importa
