›› 2017, Vol. 29 ›› Issue (12): 2097-2103.DOI: 10.3969/j.issn.1004-1524.2017.12.19

• Environmental Science • Previous Articles     Next Articles

Sustainability evaluation of reclaimed cultivated land ecosystem in coal mine wasteland

DING Cui1, MA Shouchen1, LI Mingqiu1, *, SUN Rui2, SONG Xiangping1, DUAN Peiling2   

  1. 1. School of Surveying and Land Information Engineering, Henan Polytechnic University/Field Scientific Observation and Research Base, Ministry of Land and Resources, Jiaozuo 454000, China;
    2. Zhengzhou Railway Vocational & Technical College, Zhengzhou 450052, China
  • Received:2017-05-10 Online:2017-12-20 Published:2018-01-08

Abstract: To evaluate the sustainability of reclaimed cultivated land, the soil and crop indexes were determined by sampling in subsidence-free area, stable subsidence area and unstable subsidence area in Zhaogu mine area. The 13 indexes measured were divided into soil physicochemical index, soil microbial index and crop index. Then, the sustainability index was calculated based on the triangle area method. It was shown that the sustainability index of reclaimed land in subsidence-free area (1.80) was higher than the threshold of sustainability index (1.30). The sustainability index in the stable subsidence area (1.24) was close to the threshold of sustainability index, yet the sustainability index in the unstable subsidence area (0.88) was lower than the threshold of sustainability index. In summary, the more stable the subsidence state is, the more sustainable the reclaimed is for agricultural production.

Key words: geometric method, coal mining area, reclamation, sustainability

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