干旱、低产、人口膨胀，是造成宁南山区生态环境恶化和经济发展缓慢的重要原因。
Drought, low production and population expansion are important causes of the eco environment worsening and slow economic development in the dryland of Southern Ningxia.
干旱、低产、人口膨胀，是造成宁南山区生态环境恶化和经济发展缓慢的重要原因。
Drought, low production and population expansion are important causes of the eco environment worsening and slow economic development in the dryland of Southern Ningxia.
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