矿业科学学报2024，Vol.9Issue(4)：631-640,10.
西部某矿区土壤养分时空分异特征及自修复规律
The temporal-spatialotemporal differentiation characteristics and self-repairing law patterns of soil nutrients in a mining area in western China
摘要
Abstract
This study explores the environmental changes in the disturbed area of coal mining and pres-ents the driving factors of ecological self-restoration.Specifically,we measured the soil nutrient and soil enzyme indicators in the mining area and non-mining area from 2014 to 2017 and 2019,and evaluated the stoichiometric characteristics of soil carbon(C),nitrogen(N),and phosphorus(P).The experi-mental results show that the total phosphorus concentration gradually recovered with the increase of min-ing years,while organic matter,available potassium,and urease first increased and then decreased with the increase of mining years.There were significant differences in total phosphorus,C/N ratio,N/P rati-o,and C/P ratio between the working face and the subsidence disturbance zone.Random forest analysis showed that soil sucrase,urease,available potassium,total nitrogen,total phosphorus,C/P ratio,C/N ra-tio,and water-soluble salts were the key factors influencing soil nutrient cycling in different time peri-ods;while C/N ratio,N/P ratio,total phosphorus,alkaline phosphatase,and water-soluble salts were the key factors influencing soil nutrient cycling at different locations.Mining years of the working face has differing influence path on soil factors and soil enzymes.This study could provide theoretical proof for the artificial guided self-restoration plan in coal mining subsidence areas and for ecological restoration in western mining areas.关键词
开采沉陷/自修复/生态化学计量/土壤养分/土壤因子Key words
mining subsidence/self-healing/ecological stoichiometry/soil nutrients/soil factors分类
环境科学引用本文复制引用
王泽惠,宋子恒,张健,池明波..西部某矿区土壤养分时空分异特征及自修复规律[J].矿业科学学报,2024,9(4):631-640,10.基金项目
国家自然科学青年基金(52204183) （52204183）
煤炭开采水资源保护与利用全国重点实验室开放基金(GJNY-20-113-15) （GJNY-20-113-15）
