摘要
城乡建设用地数量及相互联系的变化是空间要素及结构演化的重要方面,深刻影响着生态环境质量和生态系统服务水平,研究城乡建设用地关联对生态系统服务的影响对国土空间高质量发展具有重要意义。以洞庭湖地区为研究对象,从土地利用关联视角出发,运用引力模型、InVEST模型、面板数据模型等方法,定量研究了城乡建设用地关联对生态系统服务的影响。结果表明:(1)洞庭湖地区城镇建设用地规模呈现上升趋势,农村居民点用地规模呈现下降趋势;(2)城乡建设用地关联强度呈不断增强趋势,且强关联网格以建成区为核心向周边扩展,低关联网格分布于远离建成区的地方;(3)生境质量和碳储量呈现下降趋势,食物供给则呈现上升趋势,各项生态系统服务价值具有显著的空间异质性;(4)城乡建设用地关联强度对生态系统服务具有负向影响,人口密度、GDP密度、夜间灯光、道路网络对生态系统服务也呈现负向影响,归一化差异植被指数与生态系统服务之间则存在显著的正相关。研究结果有助于了解关联视角下城乡建设用地对生态系统服务的影响机制,可以为制定合理的城乡空间发展战略提供科学依据。
The interrelation of urban and rural construction land is an important aspect of spatially structural evolution, which has a profound impact on ecological environment quality. To study the impact of urban and rural construction land interrelation on ecosystem service for high-quality development of national space great significance. Taking the Dongting Lake area as example, this paper used gravity model, InVEST model, panel data model and other methods to quantitatively study the impact of urban and rural construction land on ecosystem services. The results showed that:(1) the size of urban construction land in the Dongting Lake area showed an upward trend, while the scale of rural residential land presented a downward trend.(2)The correlation intensity of urban and rural construction land was increasing. The strong correlation grid extended from the built-up area to the surrounding area, and the low correlation grid was distributed far away from the built-up area.(3) Habitat quality and carbon storage decreased, while food supply increased, and the value of ecosystem services had significant spatial heterogeneity.(4) The correlation intensity of urban and rural construction land had the negative impact on ecosystem services. Population density, GDP density, night light, road network also had the negative impact on ecosystem services. There was a significant positive correlation between Normalized difference vegetation index and ecosystem services. The results are helpful to understand the impact mechanism of urban and rural construction land on ecosystem services from the perspective of correlation, and can provide a scientific basis for formulating rational urban and rural spatial development strategies.
作者
欧阳晓
王坤
魏晓
OUYANG Xiao;WANG Kun;WEI Xiao(Hunan Insitute of Economic Geography,Hunan University of Finance and Economics,Changsha410205,China;School of Geographic Sciences,Hunan Normal University,Changsha410006,China)
出处
《生态学报》
CAS
CSCD
北大核心
2022年第21期8713-8722,共10页
Acta Ecologica Sinica
基金
湖南省自然科学基金项目(2021JJ40015)
湖南省国土资源厅科技计划项目(2022-49)。
