山西南部中条山生态系统碳储量时空分布及驱动因素  

Spatial and temporal distribution and driving factors of carbon storage in Zhongtiao Mountain ecosystem in southern Shanxi Province

作　　者：韩玉 丁素婷[1] 杨太保[1] HAN Yu;DING Su-ting;YANG Tai-bao(College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学资源环境学院,甘肃兰州730000

出　　处：《中国环境科学》2023年第3期1298-1306,共9页China Environmental Science

摘　　要：为探究陆地生态系统碳储量特征对促进区域低碳建设、实现区域“碳达峰、碳中和”的作用.本文运用InVEST模型的碳储量模块估算了2000~2020年中条山生态系统碳储量,并通过净生态系统生产力(NEP)对其结果进行修正,最后利用地理探测器分析碳储量空间分异的驱动因素.结果表明:2000~2020年中条山修正后碳储量总体呈增加趋势,累计增加了2.296×10^(6)t,碳储量高值区主要分布于东部、中部和西北部,低值区分布于西南部及中部小部分区域.2000~2020年中条山陆地生态系统碳汇总量呈增加趋势,区域年均单位NEP为0.060kgC/(m^(2)·a),碳汇区主要分布在东部,碳源区分布在中部及西北部.碳储量空间分异主要受年均NDVI、人类活动强度和年均潜在蒸散发的影响,其次是年均气温、年均人口和高程.不同因子的交互作用对碳储量的影响呈双因子增强和非线性增强,表明碳储量空间分异是由自然因素和人为因素共同作用的结果.中条山在生态环境保护和区域低碳建设中,应综合考虑不同影响因素的特点,采取差异化的生态调控模式和策略,提高生态系统的稳定性,增强碳储存能力.In order to explore the role of terrestrial ecosystem carbon storage playing in promoting regional low-carbon construction and realizing carbon peaking and carbon neutrality,our study estimated the carbon storage of the Zhongtiao Mountain ecosystems during 2000 to 2020 using the carbon storage module of InVEST model.The carbon storage was modified according to the net ecosystem productivity(NEP)data.What’s more,the geographic detectors were used to analyze the driving factors for the spatial variations of carbon storage.The results showed that the modified carbon storage in Zhongtiao Mountain increased by 2.296×10^(6)t from 2000 to 2020.The high carbon storages were mainly distributed in the east,central and northwest regions,while the low values were distributed in the southwest and a small part of the central region.Total carbon sink of terrestrial ecosystem in the Zhongtiao Mountain showed an increasing trend from 2000 to 2020,and the regional average annual NEP was 0.060kgC/(m^(2)·a).The carbon sink was mainly distributed in the east,while the carbon source was distributed in the central and northwestern regions.The spatial variation of carbon storage was mainly influenced by annual average NDVI,human activity intensity and annual potential evapotranspiration,followed by annual average temperature,population and elevation.The interaction effects of different factors on carbon storage showed a double factor and nonlinear enhancement,which indicated that the spatial differences of carbon storage were influenced by the natural and human factors.In the ecological environment protection and regional low-carbon construction of Zhongtiao Mountain,the different influencing factors should be considered comprehensively,and differentiated ecological regulation models and strategies should be adopted to improve the ecosystem stability and enhance the carbon storage capacity.

关 键 词：碳储量 InVEST模型 净生态系统生产力 模型修正 地理探测器 中条山 

分 类 号：X171[环境科学与工程—环境科学]