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Yangtze Flood (1998)
Transcript of Yangtze Flood (1998)
Flood Summer 1998 by Catrine, Elvan, Mutiara Yangtze Flood (1998) A steep-sided channel A river channel surrounded by steep slopes causes fast surface run-off. A lack of vegetation or woodland Trees and plants intercept precipitation, if there is little vegetation in the drainage basin then surface run-off will be high. A drainage basin Mainly impermeable rock meaning that water can not percolate through the rock layer, and so will run faster over the surface. A drainage basin in an urban area These consist largely of impermeable concrete, which encourages overland flow.
Drains take water quickly and directly to the river channel.
Houses with sloping roofs further increase the amount of run-off A drainage basin in an urban area These consist largely of impermeable concrete, which encourages overland flow.
Drains take water quickly and directly to the river channel.
Houses with sloping roofs further increase the amount of run-off Yangtze River
Flood Occurred because.. 1. Human activity near the river basin such as:
Destroying the vegetation which cause soil erosion
Cutting down forest
2. Land reclamation reduced the size of the lakes that caused decrease of the flood storage capacity
3. Construction caused flood level to rise up due to flood storage capacity
4. Severe rainfall
5. Heavily dammed river, increasing the speed and severity of the resulting runoff. Flood was caused by human activity And natural environment Yangtze river runs along Chongqing, WuHu, and Nanjing city, and ends up in Shanghai.
Surface area of the Yangzte amounted 6,605 sq.
The flood covered 21 million acres of land, including WuHan city. Aftermath
Effects 3,656 people died , 1.2 million people made homeless
5.8 million buildings (school, hospital, office, house) were collapsed.
The economy of China lost US$36 billion.
21 million hectares of area affected, 5million hectares of cropland were drowned Facts Historical records show that in earlier centuries flooding was a once every 20 year event; now floods happen 9 out of 10 years.
Ineptitude and corruption were also factors. Large sums of flood prevention money was stolen
Yangtze river encompasses 20% of China and covers 35% of China's clean water resources
Flood in Yangtze is more like an annual hazard which happens in June-September, during monsoon season Longest river in China as well as the third longest one in the world Consequences Conclusion It is true that logging does influence employment, economic development and social well-being, but Chinese Government should take care of the environment too.
Yangtze River Watershed has contributed too much for the development of the national economy.
Human development and utilization of this watershed has resulted in severe environmental problems.
Though the relationship between forest and flood is shaky, we can safely conclude that forest and flood are closely related to each other and logging does have huge impact on flood event. References Video Pictures Information http://www.fao.org/docrep/008/ae929e/ae929e01.jpg
http://ars.els-cdn.com/content/image/1-s2.0-S0169555X06003102-gr1.jpg Elsevier, B.V. 2001, Human impact on floods and flood disasters on the Yangtze River, ScienceDirect.com [Online]. http://www.sciencedirect.com/science/article/pii/S0169555X01001088 (accessed date: 28.11..2012)
Kirby, A. 2001, Plan to tame Yangtze floods, BBC News [Online]. http://news.bbc.co.uk/2/hi/science/nature/1595327.stm (accessed date: 28.11..2012)
NCDC, 2008, Flooding in China, Summer 1998, NCDC [Online], http://www.ncdc.noaa.gov/oa/reports/chinaflooding/chinaflooding.html (accessed date: 28.11..2012)
Dunn, S. 1998, Record Year for Weather-Related Disasters, Buddycom [Online]. http://www.buddycom.com/ecol/ww02/weather.html. (Accessed Date: 11.30.2012)
You, X.Z. 2012, Forest and Flood: Aftermath of the 1998 Yangtze River Flood, Circle [Online]. https://circle.ubc.ca/bitstream/id/162435/You_XinZong_FRST_497_Graduating_Essay_2012.pdf (Accessed Date: 11/30/2012)
Glantz, M. 2003, THE USE OF SHORT-TERM FORECASTS IN THE CONTEXT OF SEASONAL TO INTERANNUAL WATER RESOURCE MANAGEMENT, Environmental-Expert [Online], http://www.environmental-expert.com/Files/6063/articles/5019/KV14ML0L85J98842.pdf (Accessed Date: 11/30/2012).
Hays, J. 2009, YANGTZE RIVER, Fact Sand Detail [Online]. http://factsanddetails.com/china.php?itemid=460&catid=15&subcatid=9 (Accessed Date:12/1/2012) Video AssociatedPress (2010), China's Worst Flooding in Over 20 Years, Youtube [online]. Available at:
(http://www.youtube.com/watch?v=d1ijeQHkFao) [Accessed 2 December 2012] Around Christmas 1998 Summer rainstorm frequency (a) and summer rainstorm intensity (b) in the Yangtze River basin for 1961–2000. Reported: 51.25 inches of precipitation.
Station had a one-day total over 9.00 inches in June 1998
In July 1998, there was a ten-day period between the 17th and the 26th when 16.07 inches of rain was recorded
Heaviest rainfall was in Qinzhou, 68.28 inches rain during June-July period. $10 million cost of restoring lost lakes and prevent erosion and to save wild lives, such as pandas, as well.
Natural Forest Protection Program (NFPP) has been implemented by Chinese government as the world’s largest ecological rehabilitation project to improve its fragile and shaky ecosystem conditions
China’s Sloping Land Conversion Program (SLCP) was introduced in 1999 in response to a severe drought in Yellow River in 1997 and the 1998 Yangtze River flood
Thousands of people that lived near the banks were forced to relocate. Trivia 1.) When were the two floods occurred? 2.) Mention 2 factors that trigger flood! 3.) Mention 2 causes of Yangtze river flood! 4.) What is the name of the big three dams that built along Yangtze river 5.) How many buildings were collapsed? 6.) What were the indirect factors that also cause Yangtze river flood? 7.) Mention 3 consequences of flood? 8.) What was the main cause of Yangtze flood 1998? 9.) What was the wild live that chinese government was trying to save? 10.) Explain the graph Thank You for Your Attention! http://www.fao.org/docrep/008/ae929e/ae929e01.jpg http://gemmeronline.de/resources/_wsb_449x296_Paizhouwan1998.jpg http://i.ebayimg.com/t/RPPC-1908-TOPEKA-KANSAS-DOWNTOWN-FLOOD-VINTAGE-POSTCARD-/00/$(KGrHqF,!l0E1Fvv!!o8BNc!WtFOuQ~~_35.JPG http://factsanddetails.com/media/2/20080317-Yangtze%20Flood%2098.jpg http://webworld.unesco.org/water/ihp/publications/waterway/wat16/w16c.gif http://www-k12.atmos.washington.edu/k12/pilot/water_cycle/water2.gif http://ars.els-cdn.com/content/image/1-s2.0-S0169555X06003102-gr1.jpg http://25.media.tumblr.com/tumblr_ltnebtMG6p1qz82gvo1_500.jpg http://25.media.tumblr.com/tumblr_m8sifnoNWY1qd6f3zo1_1280.jpg http://gemmeronline.de/resources/_wsb_449x296_Paizhouwan1998.jpg http://factsanddetails.com/media/2/20080317-yangtze_flood%201998%20NASA.jpg http://lgam.wdfiles.com/local--files/drainage-basin/Typical_drainage_basin.jpg http://images.nationalgeographic.com/wpf/media-live/photos/000/202/cache/yellowstone-canyon_20297_600x450.jpg http://www.china-profile.com/images/hist_indepth/Yangtze-Flood_1998.jpg