京西大台矿区2013—2020植被净初级生产力演变规律分析  

Evolution law analysis of vegetation net primary productivity of Datai Mining area in west Beijing from 2013-2020

作　　者：戴林达 张永亮 阎跃观[3] 刘磊[1] 郭俊廷 DAI Linda;ZHANG YongLiang;YAN Yueguan;LIU Lei;GUO Junting(School of Management,China University of Mining and Technology(Beijing),Beijing 100083,China;State Key Laboratory of Water Resource Protec-tion and Utilization in Coal Mining,Beijing 102209,China;College of Geoscience and Surveying Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)管理学院,北京100083 [2]煤炭开采水资源保护与利用国家重点实验室,北京102209 [3]中国矿业大学(北京)地测学院,北京100083

出　　处：《煤炭科学技术》2024年第S2期445-457,共13页Coal Science and Technology

基　　金：煤炭开采水资源保护与利用国家重点实验室2020年开放基金课题资助项目(GJNY20-113-20);中央高校基本科研业务费资助项目(2022YQGL02)。

摘　　要：为了研究低强度开采条件下,矿区植被净初级生产力(Net Primary Productivity,NPP)的时空演变特征及其影响因子的相关性,针对现有研究对矿区生态环境测度研究尺度不够精细,与煤矿开采条件结合不够充分的问题,基于改进后的CASA模型测算了大台矿研究区、对照区、门头沟区2013—2020年植被净初级生产力;结合Manner-Kendall检验与slope趋势分析的方法研究矿区植被固碳能力的时空分布及演变特征;根据皮尔逊相关系数分析矿区植被NPP与其影响因子的相关性。结果表明:①2013—2020年,门头沟区植被NPP年均值呈波动上升趋势,最小值和最大值分别为268.5和295.2 gC/m^(2);大台矿研究区与对照区的年度植被NPP最大值分别为601.1和534.1 gC/m^(2);大台矿研究区与对照区植被NPP逐月变化规律基本一致;②空间上,2013—2020年门头沟区东部植被NPP值均低于其他地区,植被NPP高值多分布在西南地区;8年中,门头沟区植被NPP基本不变的面积占比54.3%,植被NPP轻微增加的面积占比31.8%;大台矿研究区与对照区的植被NPP变化趋势基本一致,2个区域总体植被NPP轻微减少的的面积占比46.7%,植被NPP轻微及显著增加的面积占比37.4%;③门头沟区植被NPP变化与年累计降水量变化相关性较大,相关系数最高可达0.96,与年均温度变化同样呈显著关系;④研究区和对照区的植被NPP与年际出煤量的相关系数较为接近,分别为−0.79和−0.83,结合研究区和对照区的植被NPP的时空分布特征可知,大台矿2013—2019年的采矿活动对这个时期矿区的植被NPP无明显影响。In order to study the spatiotemporal evolution characteristics and correlation of influencing factors of Net Primary Productivity(NPP)in mining areas under low-intensity mining conditions,and to address the problems of insufficient precision in measuring the ecological environment of mining areas and insufficient integration with coal mining conditions in existing research,an improved Carnegie Ames Stanford approach(CASA)model was used to calculate the net primary productivity of vegetation in the Datai Mining research area,control area,and Mentougou area from 2013 to 2020;The spatiotemporal evolution characteristics of vegetation carbon sequestration capacity in mining areas were studied by combining M-K test and slope trend analysis;According to analyze the correlation between vegetation NPP and its influencing factors in mining areas based on Pearson correlation coefficient,The results indicate that:①From 2013 to 2020,the annual average NPP of vegetation in Mentougou District showed a fluctuating upward trend,with the minimum and maximum values being 268.5 gC·m^(-2) and 295.2 gC·m^(-2),respectively;The maximum annual vegetation NPP values of the Datai Mining Research Area and the Control Area are 601.1 gC·m^(-2) and 534.1 gC·m^(-2),respectively;The monthly variation pattern of vegetation NPP in the research area and control area of Datai Mine is basically consistent;②In terms of space,the NPP values of vegetation in the eastern part of Mentougou District from 2013 to 2020 were lower than those in other regions,and the high NPP values of vegetation were mostly distributed in the southwest region;In the past 8 years,54.3% of the areas in Mentougou District have remained basically unchanged in vegetation NPP,while 31.8% have slightly increased in vegetation NPP;The trend of vegetation NPP changes in the research area and control area of the Datai Mine is basically consistent.The overall area of vegetation NPP slightly decreased accounts for 46.7%,while the area of vegetation NPP slightly and significantly

关 键 词：植被固碳能力 净初级生产力 演变规律 低强度开采 M-K检验 

分 类 号：Q948[生物学—植物学]