Dissertation > Excellent graduate degree dissertation topics show

Study on CH4 and CO2 Emissions of Phragmites Australis Marsh in Minjiang Estuary Area

Author: LiaoZuo
Tutor: ZengCongSheng
School: Fujian Normal University
Course: Physical Geography
Keywords: marsh CH4 emission CO2 emission environmental influencing factors Minjiang river estuary
CLC: X13
Type: Master's thesis
Year: 2010
Downloads: 106
Quote: 0
Read: Download Dissertation

Abstract


The Minjiang river estuary marsh is one of the most representative esturay marsh in southeast of China. This article mainly studied CH4 and CO2 emissions of Phragmites australis marsh in the Shanyutan wetland. The CH4 and CO2 emissions and environment influencing factors were be monitored by using the closed black chamber-gas chromatograph techques. The relationship between environmental influencing factors and the CH4 emissions were discussed. The results indicated:(1).The CH4 emissions were 43.405g·m-2·yr-1, and the CO2 emissions were 4728.112g·m-2·yr-1 in 2008;The CH4 emissions were 40.761g·m-2·yr-1, and the CO2 emissions were 4348.233g·m-2·yr-1 in 2009;(2).The CH4 emissions of the Phragmites australis marsh were separated into three periods that is before flood tide, in the period of flood and ebb and after ebb.The average emissions were 6.929 mg·m-2·h-1、2.163 mg·m-2·h-1 and 5.209 mg·m-2·h-1 in 2008,which were7.126 mg·m-2·h-1、2.006 mg·m-2·h-1 and 4.222 mg·m-2·h-1 in 2009;(3).The CO2 emissions of the Phragmites australis marsh were separated into three periods that is before flood tide, in the period of flood and ebb and after ebb.The average emissions were 544.901 mg·m-2·h-1、437.124 mg·m-2·h-1 and 609.023 mg·m-2·h-1 in 2008,and which were 626.663 mg·m-2·h-1 254.525 mg·m-2·h-1 and 555.751 mg·m-2·h-1 in 2009;(4).The CH4 emissions has significant positive ralationships with the the CO2 emissions in the Phragmites australis marsh;(5).The CH4 and CO2 emissions in the summer and autum were higher than in the winter and spring;(6).The temperature is the most significant factor of which effect the CH4 and CO2 overall tendency, but the height of tide cannot be ignored.

Related Dissertations

  1. Plant-mediated Methane Transport and Methane Emissions from Phragmites Australis Marsh in Minjiang River Estuary,X502
  2. The Ground Litter Decomposition in Different Components of Phragmites Australis and Influence Factors in Minjiang River Estuary,S154.4
  3. Study on Methane and Nitrous Oxide Emission in Double-Crop Rice Fields at Red Paddy Soil under Long-Term Different Fertilizer Systems,S511
  4. Cultural Default and Translation Compensation from the Perspective of Skopstheorie,H059
  5. Methane Production Potentials of Marsh Soils and Its Influence Factors in Minjiang River Estuary,S158
  6. Methane and Carbon Dioxide Emissions from Cyperus Malaccensis Marsh of Minjiang River Estuary and Main Environmental Factors,X51
  7. Bird Diversity in Winter on Shangshehu Marsh Nature Reserve in Hubei Province, China,Q958
  8. Study on Environmental Governance of the New Rural Construction,X321
  9. Research on IGCC-SOFC Hybrid Power System,TM911.4
  10. The Shandong Water Margin Cultural Tourism Development,F592.7
  11. The development of biogas in rural areas policy research,F323.214
  12. Evaluation of North-typed Populus Deltoides Marsh. Gene Resources for Breeding,S792.11
  13. Diversity and Distribution Pattern of Insect Communities in Salt Marsh Wetland on Yangtze River Estuary,Q968.1
  14. <Outlaws of the Marsh>: The Power Publicity and Destruction,I207.412
  15. Study of Pulverized Coal Ignition Characteristics under O2/N2 and O2/CO2 Combustion,TK16
  16. Study on Consolidation Settlement and Stability of Wetland Soft Soil Foundation in the Cold Region,U416.1
  17. Li Zhi and the late Ming literary thought,I206.2
  18. Food Web Analysis of Salt Marshes of the Yangtze River Estuary by Using Stable Isotopes,Q14
  19. Ecological Water Requirement for Marsh Wetlands Based on Hydrological Simulating,X171.1
  20. Study on Integrated Power/Refrigeration System and Low CO2 Emission Power System with LNG Cryogenic Energy Utilization,TK123

CLC: > Environmental science, safety science > The basic theory for the Environment and Science > Environmental Chemistry
© 2012 www.DissertationTopic.Net  Mobile