Duc, T.T.

Joffre, Olivier M.

Minh, N.D.

Phuong, N.D.

CGSpace

The	  3rd	  International	  Forum	  	  on	  Water	  and	  Food	  Tshwane,	  South	  Africa	  November	  14	  –	  17, 2011	  	   	   	  	  	  Co-­‐hosted	  by:	  	  	   	  U n d e r s t a n d i n g  l i v e l i h o o d  d y n a m i c s  a n d  l a n d  u s e  o p t i m i z a t i o n  f o r  g r e a t e r  i m p a c t :  T h e  c a s e  o f  Y a l i  R e s e r v o i r ,  V i e t n a m  OLIVIER	  JOFFRE1,	  TOAN	  TRAN	  DUC2;	  NGUYEN	  DUY	  PHUONG3	  AND	  NGO	  DUC	  MINH3	  1	  The	  WorldFIsh	  Center	  2	  Soil	  and	  Fertilizer	  Research	  Institute	  	  3	  SFRI	  o.joffre@cgiar.org	  	  S e s s i o n :  E m e r g i n g  T W G :  L i v e l i h o o d s  o r  B a s i n  S t o r i e s  	  DRAWDOWN	  AREA	  OF	  THE	  YALI	  RESERVOIR	  PROJECT	  CULTIVATED	  WITH	  CASSAVA	  IN	  YALI	  COMMUNE,	  SATHAY	  DISTRICT,	  KOM	  TUM	  PROVINCE,	  VIETNAM	  (PHOTO	  COURTESY	  OF	  O.JOFFRE	  ,	  JULY	  2011)	  	  	  	  	  	  	  International	  Forum	  on	  Water	  and	  Food	     S u m m a r y  The	   recent	  development	  of	   the	  Yali	  Reservoir	   in	   the	  Central	  Highlands	  of	  Vietnam	  has	   resulted	   in	  modifications	  to	  local	  livelihoods	  due	  to	  the	  submergence	  of	  rice	  land	  by	  the	  reservoir	  and	  the	  creation	  of	  a	  new	  drawdown	  area	  used	  for	  recession	  agriculture.	  Concomitantly,	  expansion	  of	  cassava	  cropping	  has	  caused	  deforesation,	  soil	  erosion	  and	  reduced	  water	  availability	  during	  the	  dry	  season.	  Communities	  resettled	  around	  the	  reservoir	  have	  been	  compelled	  to	  adapt	  to	  these	  new	  socio-­‐ecological	  conditions.	  Through	  surveys	  covering	  250	  households	  in	  the	  resettled	  villages	  around	  the	  reservoir,	  we	  analyzed	  the	   current	   livelihood	   patterns.	   The	   drivers	   of	   past	   and	   future	   development	   changes	   as	   well	   as	  household	  aspirations	  are	  explored	   in	  order	   to	  understand	  the	  dynamic(s)	  and	   factor(s)	  affecting	   local	  livelihoods.	  The	  suitability	  of	   the	  different	   (existing)	   farming	  systems	   is	  assessed	   through	  an	  analytical	  model	  using	  farm	  resources,	  soil,	  water,	  land	  and	  terrain	  characteristics.	  	  Preliminary	   results	   show	   that	   the	   expansion	   of	   cassava	   cultivation	   and	   access	   to	   drawdown	  agriculture	  does	  not	  benefit	  all	  the	  resettled	  households	  around	  the	  reservoir	  and	  that	  modelisation	  can	  be	  used	  to	  optimize	  recession	  agriculture	  and	  the	  productivity	  of	  the	  drawdown	  area.	  	  A	   combination	   of	   both	   approaches	  will	   provide	   adequate	   support	   for	   developing	   livelihood	   pilots	  that	  match	  the	   local	  dynamics	  of	  changes,	  constraints,	  needs,	   investment	  capacity	  and	  agro-­‐ecological	  characteristics.	   These	   methods	   and	   study	   experiences	   can	   further	   be	   used	   for	   developing	   strategic	  planning	  in	  other	  hydropower	  development	  impacted	  areas.	  	  	  	  Key Message Recent	  changes	  in	  the	  agriculture	  sector	  and	  development	  of	  hydropower	  reservoir	  modified	  water	  availability	  within	  the	  reservoir	  catchments	  and	  created	  new	  agro-­‐ecological	  zone.	  Combination	  of	  livelihood	  assessment	  and	  land	  use	  optimization	  model	  provide	  key	  answers	  to	  develop	  new	  livelihood	  pilots.	  

Understanding livelihood dynamics and land use optimization for greater impact: The case of Yali Reservoir, Vietnam

https://cgspace.cgiar.org/bitstream/10568/10451/1/MLiSe002_Final_RD_1210.pdf

Understanding livelihood dynamics and land use optimization for greater impact: The case of Yali Reservoir, Vietnam

Abstract

Similar works

Full text

Available Versions

CGSpace