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Table - Population by Potential Crop Yields
Data - Population Population and Land Area in China by Potential Crop Yields According to the AEZ Model (t/ha) Potential Yields Area (sqkm) Area (% of Total) Population (millions) Population (% of Total) ... crop yields, based on the project's Agro-Ecological Zones (AEZ) model for China(see: Fischer, G., 1998). The results are from an intermediate step, in which the model produces potential crop yields ...
www.iiasa.ac.at

Chart - Population by Potential Crop Yields
Chart - Population by Potential Crop Yields IIASA Title Page Foreword Introduction Arguments Data FAQ In-depth Summary Conclusion Bibliography Web Links ... heilig@iiasa.ac.at Data - Population Population by Potential Crop Yields According to AEZ model (in tons per hectare) Land Area by Potential Crop Yields According to AEZ model (in tons per hectare) Source ...
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Major Crop Yields
Crop Yields Note that the data published in the 2002 State of ... yields increasing almost fourfold. Of these five major crops, soybean yields increased the least, but even they nearly doubled over the period. Discussion Increases in crop yields are ... use of farmland is thought to play an important role in improving yields, but it may also have negative effects, such as increased concentrations of ...
heinzctr.org

June 16, 2004: Dead Zones Increasing in World's Coastal Waters
Although farmers sharply reduced fertilizer use, crop yields did not suffer proportionately, suggesting they had been using too much fertilizer before. ... fertilizer application and cut their use are guaranteed financial coverage for potential shortfalls in crop yields. They save money on fertilizer purchases and are insured against losses. Under test programs ...
www.earth-policy.org

Nitrous oxide sources - Agricultural Soils
Where large applications of fertilizer are combined with ... which accurately take account of the optimum amounts of fertilizer addition necessary for maximum crop yield and minimum waste are crucial both environmentally and economically. Similarly, the exact form ...
www.ghgonline.org

The Regional Impacts of Climate Change
Freshwater wetlands 11.3.2.1.3. Montane ecosystems 11.3.2.1.4. Crop biodiversity 11.3.2.2. Coastal Ecosystems 11.3.2.2.1. Coral reefs 11 ... .3.4.1.2. Vulnerability of agriculture 11.3.4.1.3. Climate change and crop yields 11.3.4.2. Forests and Forestry 11.3.4.3. Fisheries 11.3.5 ...
www.grida.no

The Regional Impacts of Climate Change
The livelihoods of subsistence farmers and pastoral peoples, ...
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Books from the Earth Policy Institute
Celsius rise in temperature during the growing season reduces grain yields by 10 percent. Falling water tables and rising temperatures help explain why the world ... the poverty that fuels rapid population growth. "Avoiding the damaging effects of higher temperatures on crop yields means moving quickly to stabilize climate. In Plan B," says Brown, "I suggest cutting global ...
www.earth-policy.org

U.S. Global Change Research Information Office
Enough to alter world weather patterns, crop yields, disease vectors, and the extent of floods and fires and severe storms? What is it ...
gcrio.org

Down On The Farm? Yields, Nutrients And Soil Quality
Fox. "We showed that by applying pesticides that interfere with symbiotic signaling, ... then crop yields are reduced and/or more growing time is needed for these crops to reach the yields obtained by untreated crops." This previously unconsidered explanation for progressively poorer crop yields ...
scienceagogo.com