摘要
目前,我国有18.2万个矿山,有大约400万hm2的退化土地,每年增加33万hm2。现仅有10%的退化土地被复垦,严重的环境问题影响矿山城市经济可持续发展。矿山城市周围有大量淤泥、粉煤灰和污泥的堆积,这些固体废弃物含有丰富的养分和良好的物理性质。根据当地退化土地特征,将废弃物合理配比,把山东新汶矿区华峰煤矿实验区的退化土地,改良成了优质土壤,并进行了种植实验。
There are about 1.82×105 state-owned mining companies and 4×106 hm2 mining degradation lands in China. The number increases at the rate of 3.3×105 hm2 every year. Nowadays, only 10% of the degradation lands are rehabilitated. The serious ecological problems of mining areas have become the restriction factors for the sustai-nable economic and social development. Large amount of sediment, coal ash, and sewage sludge has been silted up and accumulated at the mining areas. These solid wastes contain much abundant nutriment and are characterized by good physical properties. Based on the study of barren soils, the combination prescription of wastes is provided, and thus the barren land can be improved to be good soil and planting experience is made in Huafeng coal mine.
基金
新汶矿业集团与中国地质大学联合项目
