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Dongting Lake Dynamics. ESA-DRAGON-3 Project 10697 Subtopic: M onitoring of Dongting Lakes Wetlands Juliane Huth , Claudia Kuenzer, DLR, Germany. Challenges at Dongting Lake. Economic Use of Wetland Areas. Floods and Droughts. Water Quality. Urban Growth. Cash Crops.

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dongting lake dynamics
• ESA-Dragon 3 • ID 10697 • May 2014

Dongting Lake Dynamics

ESA-DRAGON-3 Project 10697

Subtopic: Monitoring of Dongting Lakes Wetlands

Juliane Huth, Claudia Kuenzer, DLR, Germany

challenges at dongting lake
• ESA-Dragon 3 Symposium • Palermo, Italy • ID 10697 • June 4th, 2013Challenges at Dongting Lake

Economic Use of Wetland Areas

Floods and Droughts

Water Quality

Urban Growth

Cash Crops

slide3

ESA-Dragon3 project (2012 – 2016) – focussing on joint data use of Chinese and European satellite sensors

Assessment of flood pulse, wetland development, quantification of wetland degradation, derivation of land use change in direct surrounding of the Dongting Lake

Methods: remote sensing data analyses based on radar and optical data with preferably automated derivation of surface water, and further parameter to describe flood events and land cover change

Data used: Envisat ASAR, Terra-SAR-X, Landsat, SPOT

Data to be used in future: HJ-1A,1B, MS, CBERS, Envisat MERIS…

• ESA-Dragon 3 Symposium • Palermo, Italy • ID 10697 • June 4th, 2013

Objectives of the Project ID 10697"Assessing Wetland Dynamics and Land Resources of Dongting Lake, China"
data sources spot and hj1 a data footprint
• ESA-Dragon 3 • ID 10697 • May 2014Data sources: SPOT and HJ1-A Data Footprint

Huth et al. (2013) - Submittedto„Journal of Applied Remote Sensing“

processing spot data and hj1 a data using seasonal information

SPOT 2007, SPOT 2010 and HJ1-A 2013

Seasonal information for classification of 2-season-dataset (spring and winter image)

  • NDVI Difference
  • TC Greenness Difference and TC Brightness Difference

Common Features:

  • Spectral bands 1-3/4 of SPOT2/4
  • NDVI
  • Tasseled Cap Greenness and Brightness (for SPOT only)
  • Principal Components (for HJ1-A only)

• ESA-Dragon 3 • ID 10697 • May 2014

Processing SPOT data and HJ1-A data using seasonal information

Huth et al. (2013) - Submittedto„Journal of Applied Remote Sensing“

classification of 2007 and 2010 spot data focus on inner dongting lake wetland area
• ESA-Dragon 3 • ID 10697 • May 2014Classification of 2007 and 2010 SPOT data – focus on inner Dongting Lake wetland area

Huth et al. (2013) - Submittedto„Journal of Applied Remote Sensing“

classification of 2013 hj1 a data focus on inner dongting lake wetland area
• ESA-Dragon 3 • ID 10697 • May 2014Classification of 2013 HJ1-A data – focus on inner Dongting Lake wetland area

Huth et al. (2013) - Submittedto„Journal of Applied Remote Sensing“

slide8
• ESA-Dragon 3 • ID 10697 • May 2014Change Analyses 2007 – 2010 – 2013from SPOT and HJ-1A data – with focus on economically used vegetation types poplar and reed

Huth et al. (2013) - Submittedto„Journal of Applied Remote Sensing“

change detection from poplar to poplar i
• ESA-Dragon 3 • ID 10697 • May 2014Change Detection – From Poplar / To Poplar I

Huth et al. (2013) - Submittedto„Journal of Applied Remote Sensing“

change detection from poplar to poplar ii
• ESA-Dragon 3 • ID 10697 • May 2014Change Detection – From Poplar / To Poplar II
  • Quantitative comparisonofchanges in inner South Dongting Lake wetlandareashowdramaticnumbersofeconomicuseofwetlandareas (Ramsarwetlandsites no.1151 and 1154 nearby)
  • From2007 to 2010 +19,5% increaseandfrom2010 to 2013 +24,1 % increasein poplararea
thank you for your attention
• ESA-Dragon 3 • ID 10697 • May 2014Thank you for your attention!

For further questions please contact: juliane.huth@dlr.de

Earth Observation Center (EOC) of German Aerospace Center (DLR)