工矿废弃地复垦土地跟踪监测方案制定方法与实证研究
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国家自然科学基金资助项目(41471186 、41571217)


Making method of tracking monitoring scheme for abandoned industrial and mining land reclamation and its empirical research
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    摘要:

    由于废弃时间长、成因复杂、不确定性因素多,历史遗留工矿废弃地复垦后的地力提升与质量改善需较长的过程,跟踪监测评价工作至关重要。本文基于3S技术和地统计学,整合复垦前、中、后不同阶段不同部门的多源数据,提出了包含监测点布设、监测指标最小数据集确立、监测手段选择为一体的面向复垦区内的土壤、地表水、地下水和农作物的工矿废弃地复垦跟踪监测方案制定方法,并以西南地区某历史遗留硫磺矿采选废弃地复垦后土地为对象进行实证研究。采用该文提出的方法,该项目复垦土地跟踪监测分别布设了由面状复垦单元生成的复垦土壤、农作物、地下水、地表水监测点53、5、5和1个,以及1类点状地物(集水池)和4类线状地物(生产路、田间路、沟渠和河流)2种监测类;建立了涵盖建设、环境和肥力等3方面内容15个指标的监测最小数据集。采用变异系数和相对偏差、变异函数变程和全局莫兰指数,从监测点数量、空间布局2个方面验证评价监测点布设方案的合理性。布设监测点数(53个)与验证计算得到的样本数(51个)较为接近,符合数量要求;实际取样间距(平均456 m)未超过各监测指标变异函数变程,无需细化监测单元或监测点;监测点空间分布特征介于随机或集聚与随机之间,显著性不明显(0.05水平),监测点空间布局比较理想。基于验证评价结果可知,该文制定的实证区复垦土地跟踪监测方案是合理的,提出的监测方案制定方法是可行的,能够指导工矿废弃地复垦后管护与质量提升工作,为制定工矿废弃地复垦跟踪监测技术标准提供技术支撑与实证依据。

    Abstract:

    Abstract: Abandoned land is a special kind of land space which is damaged by industrial and mining activities. Due to being abandoned for a long time, complicated formation and uncertain factors, the improvement of soil fertility and quality during abandoned land reclamation requires a long process. So tracking monitoring and evaluation work is really important. A making method of tracking monitoring scheme for abandoned land reclamation includes the layout of monitoring points, the establishment of the minimum data set of monitoring indicators, as one of the means of monitoring soil, surface water, groundwater and crop. A case study on a reclamation project of an abandoned sulfur mine land was carried out in the southwest area of China. With the help of 3S (remote sensing, RS; geographical information system, GIS; global positioning system, GPS) and geostatistics, we proposed monitoring point layout scheme, and monitoring indicators, and established the minimum data set as one of the means for soil, groundwater, surface water and plant. Considering the reclamation measures and monitoring index of spatial heterogeneity and the reclaimed land quality evaluation results, multi-layer spatial overlap was adopted to form monitoring units and monitoring points; considering the existing land reclamation quality factors and variability, through the analysis of the existing index average value, the single pollution index, exceeding rate, rhichness and rangeabilty to obtain the minimum data set of monitoring indicators. The monitoring sites of reclaimed soil, crop, ground water, and surface water were 53, 5, 5 and 1, and 2 kinds of monitoring types were collected. A minimum data set of 15 indicators was constructed, covering the quality of construction, environment, soil fertility, and so on. The reliability of the monitoring points was validated and evaluated from the monitoring point number and spatial layout using the coefficient of variation, relative deviation, variable range of variation function and Moran's Index according to the monitoring scheme proposed in the paper. The evaluation results showed that the number of monitoring points obtained according to monitoring scheme was close to the number in verification calculation, which met the requirements. Compared with the 138 samples in 2015, the number of monitoring points decreased by 61.59%, the monitoring index was reduced by more than 50%, the distribution of monitoring points was more uniform, the monitoring content was more comprehensive, and the monitoring cost was saved; the actual sampling distance (average 456 m) did not exceed the monitoring index range of variation function, and there was no need to refine the monitoring unit or monitoring point; the spatial distribution characteristics of monitoring points were random or between clustered and random, which was not significant (P>0.05), and the monitoring points layout was ideal. This shows that the making method of tracking monitoring scheme is scientific and feasible. The tracking monitoring scheme can guide the quality improvement project for the reclamation of abandoned mine land and also provide a technical support and empirical basis for developing the tracking monitoring standards of abandoned land reclamation.

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周 妍,罗 明,周 旭,黄元仿,张世文.工矿废弃地复垦土地跟踪监测方案制定方法与实证研究[J].农业工程学报,2017,33(12):240-248. DOI:10.11975/j. issn.1002-6819.2017.12.031

Zhou Yan, Luo Ming, Zhou Xu, Huang Yuanfang, Zhang Shiwen. Making method of tracking monitoring scheme for abandoned industrial and mining land reclamation and its empirical research[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE),2017,33(12):240-248. DOI:10.11975/j. issn.1002-6819.2017.12.031

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  • 收稿日期:2016-11-08
  • 最后修改日期:2017-05-20
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  • 在线发布日期: 2017-07-01
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