基于投影寻踪的土地复垦适宜性评价

Suitability Evaluation of Land Reclamation Based on Projection Pursuit

为确定扰动区不同单元适宜的复垦方向,进而指导扰动区的生态恢复,研究提出了基于投影寻踪算法的模糊识别模型用于土地复垦适宜性评价,并选择黑河市堤防扰动区为研究区进行了实例研究。结果表明,各评价单元因基本条件不同,在复垦方向上存在显著差异,将待复垦土地最终确定为农业用地和林业用地2个不同的利用方向。投影寻踪法得到的土地复垦适宜性评价符合扰动区实际状况,对土地复垦与生态恢复具有现实指导意义,并可将模型推广应用于类似工程的土地复垦适宜性评价。

To determine the suitable reclamation of disturbed zone, and guide the ecological restoration of disturbed area, this study proposes the land reclamation suitability evaluation of fuzzy recognition model based on projection pursuit algorithm. Heihe city local disturbance zone was studied as an example in study area. The results showed that the evaluation unit for different soil conditions, there were significant differences in the direction of reclamation land reclamation, eventually identified as agricultural land and forestry land use 2 different directions. The suitability evaluation of land reclamation by projection pursuit method accords with the condition of the disturbed area, has practical significance for land reclamation and ecological restoration and land reclamation model can be applied to similar engineering suitability evaluation.