搜索结果: 1-15 共查到“农学 A-value”相关记录198条 . 查询时间(0.128 秒)
Use of Optimization Modeling to Assess the Effect of Timber and Carbon Pricing on Harvest Scheduling, Carbon Sequestration, and Net Present Value of Eucalyptus Plantations
timber harvest scheduling mixed-integer programming harvest age carbon sequestration
2023/12/19
Quantifying the impact of carbon (C) and timber prices on harvest scheduling and economic returns is essential to define strategies for the sustainable management of short-rotation plantations so that...
Spatio-Temporal Changes in Ecosystem Service Value and Its Coordinated Development with Economy: A Case Study in Hainan Province, China
ecosystem service value degree of economic and environmental coordination land use change sustainable development analysis of driving force
2023/12/1
Ecosystem service value is crucial to people’s intuitive understanding of ecological protection and the decision making with regard to ecological protection and economic green development. This study ...
Economic value of insect pollination services in U.S. much higher than thought, study finds（图）
Economic value insect pollination services U.S
2021/3/5
The economic value of insect pollinators is much higher than previously thought, according to researchers at the University of Pittsburgh and Penn State University. The team also found that ...
Bioenergy production to improve value-creation potential of strategicforestmanagementplans in mixed-wood forests of Eastern Canada
Forest value chain Network flow optimization Wood pellets Strategic forest planning Price volatility
2024/2/27
The relationship between forest management and biomass sourcing is fundamental to the achievement of sustainable bioenergy production. Few biomass-sourcing studies have directly addressed the complex ...
Relationship between innovation and networks in chestnut value chain: A case study in Italy
Castanea sativa Miller social capital network analysis participatory value chain analysis Mugello-Val di Sieve
2018/3/6
In the last decades, the chestnut production has decreased in Italy due to diseases such as chestnut blight and chestnut
gall wasp, and progressive depopulation of mountainous areas. The aim of the p...
Nutritional Value and Health-Promoting Properties of Mare’s Milk – a Review
chemical composition breed lactation fatty acids
2018/3/5
Jastrzębska E., Wadas E., Daszkiewicz T., Pietrzak-Fiećko R. (2017): Nutritional value and health-promoting
properties of mare’s milk − a review. Czech J. Anim. Sci., 62, 511–518.
Re...
Evaluation of the nutritional value of locally produced forage in Korea using chemical analysis and in vitro ruminal fermentation
Digestion Kinetics In vitro Ruminal Fermentation Locally Produced Forage Nutrient Analysis Ruminant
2017/3/9
The use of locally produced forage (LPF) in cattle production has economic and environmental advantages over imported forage. The objective of this study was to characterize the nutritional value of L...
Genome-association analysis of Korean Holstein milk traits using genomic estimated breeding value
Korean Holstein Genome-wide Association Studies (GWAS) Milk Production Milk Fat Milk Protein
2017/3/9
Holsteins are known as the world’s highest-milk producing dairy cattle. The purpose of this study was to identify genetic regions strongly associated with milk traits (milk production, fat, and protei...
Determining the recreational value of forest park by travel cost method and defining its effective factors
Shahid Zare Forest Park travel function economic value consumer surplus
2016/10/14
Considering the importance of recreation and excursions in household’s basket of expenditures on the one hand, and not paying attention to the economic value of recreational function for natural resou...
Quantification of the utility value of the recreational function of forests from the aspect of valuation practice
economics forestry valuation method economic value recreation servitude
2016/9/2
The article is focused on quantification of the utility value of the recreational function of forests from the aspect of valuation practice. The aim of the article is a description of a methodical pro...
Production value and cost-effectiveness of pig fattening using liquid feeding or enzyme-supplemented dry mixes containing rye grain
swine barley fattener enzyme yeast xylanase
2016/9/1
The aim of this study was to assess the cost-effectiveness of a fermented liquid feeding and enzyme supplementation of dry fodders containing rye grain for pig fattening. Two experiments were performe...
Application of the Economic Value Added index in the performance evaluation of forest enterprise
cost of capital net present value
2016/6/3
The paper aims at pointing to possibilities of using the Economic Value Added index in evaluating the forest enterprise performance. The given index ranks among the indices of fourth-generation evalua...
Effects of Different Cutting Height on Nutritional Quality of Whole Crop Barley Silage and Feed Value on Hanwoo Heifers
Aerobic Stability Barley Silage Cutting Height Digestibility Hanwoo Heifer
2016/11/10
The present study evaluated the effects of different cutting height on nutritive value, fermentation quality, in vitro and in vivo digestibility of whole crop barley silage. Whole crop barley forage (...
Response of directly seeded high-value timber species to microorganisms,fertiliser and a water retention polymer:implications for reforestation of agricultural lands in Southeast Asia
forestry mycorrhizal fungi rehabilitation root nodule bacteria Rose woods
2016/4/6
High-value native timber species are being promoted in reforestation in Southeast Asia. However, slow growth during early establishment, coupled with poor soil fertility, poses challenges for promotin...
Effects of Nitrogen Application Rate on the Yields, Nutritive Value and Silage Fermentation Quality of Whole-crop Wheat
Nitrogen Application Nutritive Value Silage Whole-crop Wheat Yield
2016/11/10
Whole-crop wheat (Triticum aestivum L.) as forage has been extensively used in the world. In this study, the effects of N application rates on the yields, nutritive value and silage quality were inves...