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NS 435 Unit 2: Impact of Ecological Changes on Agriculture. Lei Wang, Ph.D. How Ecological Changes Affect Agriculture/Food Production? Short-Term Effects Long-Term Effects How Modern Agriculture Impacts the Climate? Alternative Solutions/Opportunities?. Outline.

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Ns 435 unit 2 impact of ecological changes on agriculture

NS 435 Unit 2:Impact of Ecological Changeson Agriculture

Lei Wang, Ph.D.


Outline

Outline


Food for thought

According to Siikamaki, (2006) “Agriculture is frequently discussed in the context of climate change: not only is agriculture vulnerable to climate change, it is also part of the problem and its potential solutions.”

-Siikamaki, Juha. (2006). Climate Change and U.S. Agriculture. Examining the Connections. Environment, pg(s). 36-49.

Food for Thought


Climate context

According to Peter Backlund from NCAR, discussed in the context of climate change: not only is agriculture vulnerable to climate change, it is also part of the problem and its potential solutions.”

“Human activities have altered the global climate.

During the 20th century, the global average surface

T increased 0.6 C and global sea level

increased 15 to 20 cm.”

  • -Backlund, P., Janetos, A., and Schimel, D. Executive Summary: The Effects of Climate Change on Agriculture, Land Resources, Water Resources, and Biodiversity, pages 1-10.

Climate Context


Climate context1

“… human influences will continue to change Earth’s climate throughout the 21st century. The global average T will rise another 1.1 to 5.4 C by 2100. Which will result in continued increases in sea level and overall rainfall.”

  • -Backlund, P., Janetos, A., and Schimel, D. Executive Summary: The Effects of Climate Change on Agriculture, Land Resources, Water Resources, and Biodiversity, pages 1-10.

Climate Context


Examples of ecological factors

  • Temperature climate throughout the 21

  • Precipitation

  • CO2 concentrations

  • Water availability

  • Change in pest populations, plant diseases, and weeds.

Examples of Ecological Factors


How may ecological changes affect agriculture food production

  • Drought/Flooding: (extreme weather events) climate throughout the 21

    • Soil moisture/erosion, evaporation

  • Water pollution (i.e. agricultural run-off)

  • Heat Stress w/ rising temps– crops, livestock

  • Pollution levels (soil & H20)

How May Ecological ChangesAffect Agriculture/Food Production?


How may ecological changes affect agriculture food production1

  • Increased pests, disease, weeds climate throughout the 21

  • Some crops more sensitive to rising temps (tomatoes– e.g.)

  • Altered Food Webs (e.g. polluted waters- marine food webs)

How May Ecological ChangesAffect Agriculture/Food Production?


Short term effects of climate change on agriculture

  • Some crops– may improve growing conditions climate throughout the 21

    - however, with continued temp increase (esp. Southern regions) some crops may not adapt.

    - Northern regions may benefit most (since tend to be cooler.) e.g. longer growing season opportunity.

    -- Possible to grow new crops/different crops.

Short-Term Effects of Climate Change on Agriculture


Long term effects climate change

Long Term Effects & Climate Change


Earth s future climate

Earth’s Future Climate


Earth s future climate1

Earth’s Future Climate


Earth s future climate2

Earth’s Future Climate


Questions? many parts of the globe by 2080-99. The largest decreases are projected across the northwest parts of Europe and North America.


How modern agriculture impacts the climate

How Modern AgricultureImpacts the Climate


How modern agriculture impacts the climate1

How Modern AgricultureImpacts the Climate


Questions? transportation– e.g.)


Alternative solutions opportunities

Alternative Solutions/Opportunities?


Alternative solutions opportunities1

  • Methane capture “tanks” transportation– e.g.)

  • Increase irrigation efficiency

  • Focus on locally produce foods– e.g. Farmers Markets

  • Improved fertilization practices– e.g. timing

Alternative Solutions/Opportunities?


References

  • Backlund, P., Janetos, A., and Schimel, D. transportation– e.g.)

    Executive Summary: The Effects of Climate Change on Agriculture, Land Resources, Water Resources, and Biodiversity, pages 1-10.

    -Retrieved from:

    http://www.usda.gov/oce/global_change/files/SAP4_3/ExecSummary.pdf

  • Siikamaki, Juha. (2006). Climate Change and U.S. Agriculture: Examining the Connections. Environment, pgs. 36-49.

  • Retrieved from:

    http://kucourses.com/ec/courses/24739/CRS-NS435-3407037/Unit_2_Climate_Change_and_US_Agriculture.pdf

    Earth’s Future Climate: http://www.ncar.ucar.edu/research/climate/future.php

References


Questions? transportation– e.g.)


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