搜索结果: 1-15 共查到“农学 Impacts”相关记录65条 . 查询时间(0.062 秒)
Modelling climate change impacts on maize yields under low nitrogen input conditions in sub-Saharan Africa
crop simulation model ensemble modelling model intercomparison smallholder farming systems uncertainty
2023/12/21
Smallholder farmers in sub-Saharan Africa (SSA) currently grow rainfed maize with limited inputs including fertilizer. Climate change may exacerbate current production constraints. Crop models can hel...
The Impacts of Different Climate Change Scenarios on Visits toward the National Forest Park in Taiwan
weather factors visitation climate change
2023/12/15
Many studies have shown that the weather greatly affects the tourist count. Understanding weather information, climate change, and how they influence the tourist count in different tourist seasons (pe...
Soil Carbon Modelling in Salix Biomass Plantations: Variety Determines Carbon Sequestration and Climate Impacts
biomass production life cycle assessment climate impact soil organic carbon Salix willow short rotation coppice genotypic difference
2023/12/8
Short-rotation coppice (SRC) Salix plantations have the potential to provide fast-growing biomass feedstock with significant soil and climate mitigation benefits. Salix varieties exhibit significant v...
Drought impacts on tree carbon sequestration and water use - evidence from intra-annual tree-ring characteristics
carbon sequestration extreme drought intrinsic water-use efficiency physiological drought point dendrometer quantitative wood anatomys table carbon isotopes xylogenesis
2023/11/20
The impact of climate extremes on forest ecosystems is poorly understood but important for predicting carbon and water cycle feedbacks to climate. Some knowledge gaps still remain regarding how drough...
该研究发现棉花种植环节的环境影响取决于灌溉、农药和化肥用量。全球约有一半的棉田使用地下水灌溉，农药平均施用量为 1.57 kg/ha，氮磷肥平均投入量为150 kg/ha。全球各棉区灌溉、农药、氮肥施用量差异较大，经济发展水平高的地区施用量较高，而经济水平和水资源有限的棉区施用量较少，亟需因地制宜提高灌溉用水、化肥、农药利用效率，减少生产环节的环境影响。研究还发现，除了棉花种植环节对环境的影响外，...
Impacts of forest restoration on soil erosion in the Three Gorges Reservoir area, China
Soil loss Land degradation Ecological restoration Forest landscape restoration The Three Gorges Reservoir area (TGRA)
2024/2/4
Vegetation recovery is a promising strategy to mitigate soil loss risk across different landscapes and human disturbance levels. Uncertainties still exist in the impacts of forest restoration on soil ...
Impacts of Change in Atmospheric CO2 Concentration on Larix gmelinii Forest Growth in Northeast China from 1950 to 2010
treegrowth CO2fertilization tree-ring dendrochronology InTECmodel
2024/3/12
Although CO2 fertilization on plant growth has been repeatedly modeled to be the main reason for the current changes in the terrestrial carbon sink at the global scale, there have been controversial f...
THE IMPACTS OF TYPICAL DROUGHT EVENTS ON TERRESTRIAL VEGETATION IN CHINA
vegetation type drought event SPEI the North China the Southwest China
2018/5/16
In our study, according to the statistical results of standardized precipitation evapotranspiration index (SPEI), we chose two drought events which occurred in the North China during 2001 and in the S...
Impacts of climate change on water requirements of winter wheat over 59 years in the Huang-Huai-Hai Plain
Mann-Kendall test response of ETc crop water requirement
2016/2/22
Daily data from 40 meteorological stations in the Huang-Huai-Hai Plain from 1955 to 2013 were analyzed using the Mann-Kendall test and partial correlation to determine the temporal trends of meteorolo...
Deepwater Horizon crude oil impacts the developing hearts of large predatory pelagic fish
oil spill damage assessment heart development embryology
2015/11/16
The Deepwater Horizon disaster released more than 636 million L of crude oil into the northern Gulf of Mexico. The spill oiled upper surface water spawning habitats for many commercially and ecologica...
The impacts of ground-based logging equipment on forest soil
dry bulk density moisture content
2015/5/5
Soil properties can be affected by heavy equipment used for skidding but these impacts vary greatly
with site conditions and operational practices. We assessed the effects of ground-based skidding o...
Financial and socio-economic impacts of nature conservation on forestry in Slovakia
nature conservation financial and socio-economic impacts NATURA 2000
2015/4/14
The article deals with financial and socio-economic impacts of nature conservation in forest and wood industries of Slovakia. The paper presents costs and losses of state budget, forest enterprises an...
Expected impacts of climate change on forests: Czech Republic as a case study
elevation zones drought stress heat spells forest growth and distribution forest pests and pathogens
2015/3/27
We provide fundamental information about the future development of selected climate elements in relation to anticipated threat to forests in the Czech Republic. All analyses were carried out in relati...
Production impacts of forest tree breeding on an example of Norway spruce
economic efficiency forest tree breeding growth Norway spruce production
2015/3/19
The present paper evaluates the height, diameter and stem volume of parental tree progenies. These Norway spruce progenies are compared with the control estimated from tables. The control was overperf...
Toxicity and Biochemical Impacts of Some New Insecticide Mixtures on Cotton Leafworm Spodoptera littoralis (Boisd.)
toxicity enzymes Spodoptera littoralis
2015/3/6
The susceptibility to five new insecticide mixtures: chlorosan, feroban, cygron, engeo, and kingbo was studied
in the 2nd and 4th instar larvae of the cotton leafworm Spodoptera littoralis (Boisd.)....