منابع مشابه
Agricultural intensification and ecosystem properties.
Expansion and intensification of cultivation are among the predominant global changes of this century. Intensification of agriculture by use of high-yielding crop varieties, fertilization,irrigation, and pesticides has contributed substantially to the tremendous increases in food production over the past 50 years. Land conversion and intensification,however, also alter the biotic interactions a...
متن کاملEcological Impacts of Pesticides in Agricultural Ecosystem
Pesticides are essential tools in integrated pest management (IPM) programs which can have the great influence if they are used properly. However, the adverse impacts of these compounds on the environment and ecosystem should not be ignored. The ecological effects of pesticides can be discussed from different points of view. Some of the significant consequences of use of pesticides are side eff...
متن کاملSelf-Propelled Micromotors for Cleaning Polluted Water
We describe the use of catalytically self-propelled microjets (dubbed micromotors) for degrading organic pollutants in water via the Fenton oxidation process. The tubular micromotors are composed of rolled-up functional nanomembranes consisting of Fe/Pt bilayers. The micromotors contain double functionality within their architecture, i.e., the inner Pt for the self-propulsion and the outer Fe f...
متن کاملEcosystem services and agriculture: Cultivating agricultural ecosystems for diverse benefits
Scott M. Swinton⁎, Frank Lupi, G. Philip Robertson, Stephen K. Hamilton Department of Agricultural Economics, Michigan State University, East Lansing, MI 48824-1039, United States Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824-1039, United States Department of Crop and Soil Sciences, Michigan State University, Hickory Corners, MI 49060, United States W.K...
متن کاملAgricultural Water Management and Climate Risk
This report was funded by the Bill and Melinda Gates Foundation. The views expressed in this report are those of the authors, and do not necessarily reflect those of the Bill and Melinda Gates Foundation. Summary Exposure to a high degree of climate risk is a characteristic feature of rainfed agriculture in the drylands of sub-Saharan Africa and parts of South Asia. A growing body of evidence l...
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ژورنال
عنوان ژورنال: Kagaku To Seibutsu
سال: 1986
ISSN: 0453-073X,1883-6852
DOI: 10.1271/kagakutoseibutsu1962.24.173