从时空变异的角度识别山地丘陵平原地区景观格局与生态系统服务价值之间的关系

IF 2.4 2区 农林科学 Q1 FORESTRY
Forests Pub Date : 2023-12-14 DOI:10.3390/f14122446
Qing Han, Ling Li, Hejie Wei, Xiaoli Wu
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引用次数: 0

摘要

识别景观格局和生态系统服务价值(ESV)的变化,厘清其时间变化和空间变化的关系,可以深入了解区域景观特征,为区域景观规划提供科学支持。利用沂河流域的土地利用数据,我们采用景观格局指数和等效因子法,定量评估了2000年至2018年的景观格局和生态系统服务价值的变化。我们采用了皮尔逊相关指标和地理加权回归模型来探讨它们时空变化的相互关系。结果表明(1)林地是面积最大的土地覆被类型。除建设用地外,其他类型的土地面积均有所下降。变化最明显的是建设用地。(2) 总体景观的聚合度呈下降趋势。破碎度、景观多样性和丰富度均有所上升。(3) 在整个研究期间,总体 ESV 逐渐下降,对 ESV 贡献最大的土地覆被类型是林地。(4)从时间变化来看,总体区域的斑块密度和边缘密度与总 ESV 呈显著负相关。斑块指数、周长-面积分形维度(PAFRAC)和聚集度的最大值与总 ESV 显著正相关。(5) 在空间变化方面,传染指数(CONTAG)、周长-面积分形维数(PAFRAC)和香农多样性指数(SHDI)与 ESVs 明显相关。CONTAG 与上游的 ESV 呈正相关,但与中下游呈负相关。SHDI 与上游的 ESV 负相关,但与中下游正相关。PAFRAC 在大多数情况下与 ESV 呈正相关。景观格局指数与 ESV 之间的关联在大多数情况下表现出时间和空间上的不一致性,这表明它们之间的关系存在时空尺度效应。本研究建议地方政府制定长期的城市发展战略,严格控制建设用地的无序扩张。政府部门可通过合理的国土空间规划,增强沂河流域整体景观格局的连通性,实现区域资源的合理配置和可持续发展。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Identifying the Relationships between Landscape Pattern and Ecosystem Service Value from a Spatiotemporal Variation Perspective in a Mountain–Hill–Plain Region
Identifying the changes in landscape pattern and ecosystem service value (ESV) and clarifying their relationship in temporal changes and spatial variations can provide insight into regional landscape features and scientific support for regional landscape planning. Leveraging land use data from the Yihe River Basin, we quantitatively assessed the landscape pattern and ESV shifts spanning from 2000 to 2018 using the landscape pattern indexes and the equivalence factor method. We employed Pearson correlation metrics and the geographically weighted regression model to explore the interrelation of their spatiotemporal variations. Our results show the following: (1) Forestland represents the most expansive land cover category. Apart from construction land, all other types experienced a decline in area. The most notable change occurred in the area of construction land. (2) The aggregation of the overall landscape shows a downward trend. The levels of fragmentation, landscape diversity, and richness increased. (3) Throughout the entire study period, the overall ESV gradually decreased, and the land cover type with the greatest contribution to the ESV was forestland. (4) In terms of temporal changes, the patch density and edge density of the overall area are significantly negatively correlated with total ESVs. The largest values for the patch index, perimeter–area fractal dimension (PAFRAC), and aggregation are significantly positively correlated with total ESVs. (5) In terms of spatial variation, the contagion index (CONTAG), PAFRAC, and the Shannon diversity index (SHDI) were noticeably correlated with ESVs. The CONTAG is positively correlated with ESVs upstream, but negatively midstream and downstream. The SHDI is negatively correlated with ESVs upstream, but positively midstream and downstream. The PAFRAC exhibits a positive correlation with ESVs for the most part. The association between the landscape pattern indexes and ESVs exhibits temporal and spatial inconsistencies in most instances, suggesting a spatiotemporal scale effect in their relationship. This study recommends that the local government devises a long-term strategy for urban development and exercises stringent control over the unregulated expansion of construction land. Through reasonable territorial spatial planning, government departments could enhance the connectivity of the overall landscape pattern of the Yihe River Basin to achieve the reasonable allocation and sustainable development of regional resources.
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来源期刊
Forests
Forests FORESTRY-
CiteScore
4.40
自引率
17.20%
发文量
1823
审稿时长
19.02 days
期刊介绍: Forests (ISSN 1999-4907) is an international and cross-disciplinary scholarly journal of forestry and forest ecology. It publishes research papers, short communications and review papers. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.
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