JOURNAL OF NATURAL RESOURCES ›› 2018, Vol. 33 ›› Issue (11): 1872-1885.doi: 10.31497/zrzyxb.20171063

• Resource Utilization and Management • Previous Articles     Next Articles

Reclamation Decision for Temporary Construction Land of Coal Mines Based on Niche-fitness and Triangle Model

DU Jian-ping1, SHAO Jing-an1,2, ZHOU Chun-rong3,4, SUN Jing3,4   

  1. 1.College of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China;
    2.Key Laboratory of Surface Process and Environment Remote Sensing in the Three Gorges Reservoir Area, Chongqing 401331, China;
    3.Chongqing Key Laboratory of Exogenic Mineralization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing 400042, China;
    4.Chongqing Research Center of State Key Laboratory of Coal Resource and Safe Mining, Chongqing 400042, China
  • Received:2017-10-13 Online:2018-11-20 Published:2018-11-20
  • Supported by:
    Chongqing Land and Housing Authority Science and Technology Plan Program, No. CQGT-KJ-2014034 and CQGT-KJ-2016003; The 2016 Education Innovation Team of Chongqing Municipal Education Commission, No. CXTDX201601017

Abstract: The ecological reclamation and utilization of temporary construction land of coal mines is an important way of responding to the strategy of ecological civilization construction, practicing the idea of “ecological land improvement +” and optimizing the layout of the land. Based on the temporary construction land of 14 coal mines in Qijiang District of Chongqing City, an index system of suitability evaluation consisting of eight factors such as nature, location and population were constructed, which includes more than 20 evaluation factors such as slope, distance from road and soil pollution degree. By adopting the comprehensive weight method (AHP + TOPSIS), the niche-fitness model and the triangle model are introduced into the decision analysis of ecological reclamation and utilization of temporary construction land of coal mine. The results show that: 1) The average value of ecological index of each evaluation unit is more than 0.5, and the overall condition of the study area is good and is basically suitable for different kinds of reclamation. However, the niche-fitness coefficient of some plots is low, which indicated engineering or biological measures are needed to improve and renovate the situation. 2) In the unidirectional reclamation and utilization analysis, the appropriateness of agricultural reclamation showed “inverted pyramid” distribution that grade Ⅰ (optimum) has the largest area, accounting for 44.94% of the land; the appropriateness of construction land and ecological land showed a shape of olive that the grade Ⅱ (suitability) has the largest area, accounting for 76.54% and 58.02%, respectively. In the analysis of comprehensive reclamation and utilization, agricultural land showed the most in number and area of evaluation units in each reclamation and utilization direction, followed by ecological land and construction land. The three kinds of land accounted for 46.29%, 30.17% and 23.54% of the total area respectively. 3) The main factors influencing the direction of land reclamation are soil texture, public reclamation intention and proportion of cultivated land, and the main factors influencing the reclamation and utilization of construction land are the degree of geological disaster susceptibility, public intention and the development potential of non-agricultural industry. The main factors of reclamation and utilization of ecological land are forest land ratio, forest area per capita and soil organic contents. The study can provide the method and reference for decision in reclamation of temporary construction land of coal mines.

Key words: land reclamation, niche-fitness, Qijiang, temporary construction land of coal mine, triangle model

CLC Number: 

  • X171.4