首页|内蒙古大兴安岭土地利用格局和生态系统服务功能的时空演变特征

内蒙古大兴安岭土地利用格局和生态系统服务功能的时空演变特征

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[目的]内蒙古大兴安岭作为独特山地生态热点地区,研究其土地流转和强度对生态系统服务功能的响应关系,为推进该地区科学配置土地利用格局、促进生态可持续发展提供理论依据.[方法]基于1990-2022年5期遥感影像,在县域尺度上综合运用InVEST-CASA模型和四象限模型法,评估5种典型的生态服务功能(生境质量、碳储量、水源涵养量、土壤保持量和植被净初级生产力)变化,并研究土地利用强度(LUI)时空演变与生态系统服务功能相关性.[结果]①1990-2022年,研究区土地利用格局稳定,农田、草地和林地(天然林、人工林)是内蒙古大兴安岭主要组成地类.②生态系统服务功能呈北高南低缓慢退化态势,生境质量和土壤保持量逐年下降,产水量和植被净初级生产力波动式衰减,碳储量增速减缓.③由于土地利用格局变化和利用强度增加,生态系统服务功能综合值与土地利用强度之间呈现负相关,受其影响较为显著的县域主要分布在该研究区的东南侧.[结论]内蒙古大兴安岭生态系统服务功能存在明显时空异质性特征,合理优化土地利用格局可以有效提升内蒙古大兴安岭地区生态系统服务功能.
Spatial and Temporal Evolution of Land Use Pattern and Ecosystem Service Function in Daxinganling Mountains of Inner Mongolia
[Objective]As a unique mountainous ecological hot spot in Inner Mongolia Autonomous Region,the response relationship of land circulation and intensity to ecosystem service function was studied to provide theoretical basis for scientific allocation of land use pattern and ecological sustainable development in Daxinganling.[Methods]Based on five remote sensing images captured from 1990 to 2022,this study comprehensively applied the InVEST-CASA and four-quadrangle models to assess changes in five typical ecological service functions(habitat quality,carbon storage,water conservation,soil conservation,and the net primary productivity of vegetation)at the county scale.The correlation between the temporal and spatial evolution of land use intensity and ecosystem service function was studied.[Results]① From 1990 to 2022,the land use pattern of the study area was stable,and farmland,grassland,and woodland(natural forest and plantation forest)were the main land types in the Daxinganling Mountains of Inner Mongolia.② Ecosystem service function showed a trend of slower degradation in the north and lower degradation in the south,the habitat quality and soil conservation decreased annually,the water production and the net primary productivity of vegetation declined in a fluctuating manner,and the growth rate of carbon storage slowed down.③ Owing to the change in the land use pattern and the increase in land use intensity,there was a negative correlation between the comprehensive value of ecosystem service function and land use intensity,and counties affected by this change were mainly distributed in the southeastern region of the study area.[Conclusion]There was evident spatial and temporal heterogeneity in ecosystem services in the Greater Khingan Mountains of Inner Mongolia,and rational optimization of land use patterns can effectively improve ecosystem services in this area.

land use patternecosystem service functionIn VEST-CASA modelecological four-quadrant modelDaxinganling Mountains of Inner Mongolia

庞萬隆、冀鹏浩、庞立东、高润红

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内蒙古农业大学林学院,内蒙古呼和浩特 010019

内蒙古农业大学理学院,内蒙古呼和浩特 010018

内蒙古财经大学资源与环境经济学院,内蒙古呼和浩特 010010

土地利用格局 生态系统服务功能 InVEST-CASA模型 生态四象限模型 内蒙古大兴安岭

内蒙古自治区科技计划国家自然科学基金项目内蒙古自治区科技攻关计划项目内蒙古经济数据分析与挖掘重点实验室课题内蒙古财经大学院士工作站重点课题

2023YFDZ0017323602492021GG0009SY23009NCDYSZJGZZ-05

2024

10.13961/j.cnki.stbctb.2024.04.035

水土保持通报
中国科学院水利部水土保持研究所 水利部水土保持监测中心

水土保持通报

CSTPCD北大核心
影响因子：0.658
ISSN：1000-288X
年,卷(期)：2024.44(4)
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