It also points out the present problems of Ningbo coastal backbone forest strips that are shortage of omnium , low quality , maintenance difficulties and lack of scientific and technological support .
并对宁波市沿海基干林带存在的问题进行分析，得出存在总量不足、质量不高、管护面临困难、用地日趋紧张、科技支撑不足等方面问题。
omnium