Population pressure, the acquirability of natural resources, the main landform factors and the climate condition are the main causes to determinate the poverty of Lancang region in Yunnan province;

 
  • 人口壓力、自然資源的可獲得性和當地主要的地形和氣候條件是決定云南省瀾滄江流域貧困的主要因素;
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