LA CES CEU – Water Infiltration/Water Storage, 9.15.2021 Successfully complete the following quiz to qualify for 1 LA CES continuing education credit. A passing grade requires 8 correct answers. CEU LA CES Webinar 9.15.21 Water Infiltration/Water Storage Name(Required) First Last Email(Required) Phone(Required)ASLA # CLARB # CSLA # FL# 1. Plants release an estimated 10-40% of carbon fixed by photosynthesis through their roots into soil. True False 2. The woodland landscape is effective at infiltration of water and storing soil carbon because a. It is a high biodiversity supports system resilience b. Layers of plant material both above and below ground c. Fibrous roots which allow water to infiltrate d. All of the above 3. Living plants animals and soils all contain carbon, and is largely sequestered (long term storage) in oceans, soils, and vegetation (esp. forests). For terrestrial storage, soils contain approximately __________% of carbon pools stored on land? a. 50% b. 25% c. 75% d. None of the above 4. Cover crops can improve water infiltration into soils and facilitate carbon sequestration but soil compaction can still happen due to management errors that prevents infiltration. Which of these statements are true? a. Intense rainstorms that exceed the capacity of the soil to infiltrate cause compaction. b. Equipment use on wet soils can introduce compaction and destroy soil pore structure. c. Lack of plant residues left on soil can cause soils to clog when it rains. d. a and b e. b and c 5. Biochar in the soil is being studied for its ability to a. support mycorrhizal fungi b. Improve soil biologic activity c. Expedite improved soil drainage by facilitating macropore formation d. a and c e. b and c 6. Removal and storage of carbon dioxide in terrestrial ecosystems is referred to as: a. Soil Organic Matter b. Carbon Neutrality c. Soil Carbon Sequestration d. None of the above 7. Soil Organic Matter (SOM) improves soil by a. Increased retention of water and nutrients b. Improved soil structure c. Reduced erosion d. Improved water quality in groundwater and surface waters e. a, b, and d f. all of the above 8. Roots sequester carbon by: a. Soil erosion b. Leaching of dissolved carbon into groundwater c. Photosynthesis, respiration and decomposition d. Sharing exudates with soil organisms 9. Photosynthesis is the fixation of CO2 into plant biomass. True False 10. Soil carbon storage is important for water quality because a. Runoff over the surface is a big problem b. The fastest way to improve water quality is to reduce runoff volume c. It helps plants grow d. Carbon rich soils infiltrate more water than carbon poor soils Δ
