Reasons of the slow economic development in the provincial border areas include: natural geographical factors, systematic reasons, and transportation elements.
省际边境地区经济发展缓慢主要是由：自然地理因素、体制因素、交通因素造成的。
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。
The composite material production are of great economic and social benefits, also slow down the speed of development of natural resources.
复合材料的生产带来了巨大的经济效益和社会效益，也减缓了对自然资源的开发速度。
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