Xie Meng,Wu Weicheng.Impacts of Change in Land Use and Landscape Pattern on Ecosystem Service Value in Northeast of Jiangxi Province[J].Research of Soil and Water Conservation,2024,31(03):331-341.[doi:10.13869/j.cnki.rswc.2024.03.019]
赣东北土地利用及景观格局变化对生态系统服务价值的影响
- Title:
- Impacts of Change in Land Use and Landscape Pattern on Ecosystem Service Value in Northeast of Jiangxi Province
- 文章编号:
- 1005-3409(2024)03-0331-11
- Keywords:
- ESV; land use; landscape pattern; GTWR model; northeast of Jiangxi Province
- 分类号:
- X171.1; F301.24
- 文献标志码:
- A
- 摘要:
- [目的]通过开展生态系统服务价值(Ecosystem Service Value,ESV)对土地利用及景观格局变化的响应研究,维持赣东北生态系统功能稳定以及筑牢区域生态安全屏障。[方法]基于1990—2020年4期土地利用数据,利用GIS空间统计和分析等方法测度赣东北土地利用、景观格局和ESV的时空变化,并引入弹性指数和时空地理加权回归(GTWR)模型分别探究土地利用和景观格局变化对ESV的影响。[结果](1)林地和耕地是主要的用地类型,而除水域和建设用地面积递增外,其他地类面积均减少,使得整个区域景观破碎化和复杂化;(2)ESV总量整体上升,其中林地和水域是生态系统的主要贡献者,两者合计占比超过89%,而各县(市、区)ESV的分布和变化主要受水域、林地和建设用地的影响;(3)高弹性指数(弹性指数>5)主要集中于鄱阳湖及其水系沿岸和各县(市、区)中心繁华地段周边,而较高弹性指数(3<弹性指数≤5)主要集中于城市交界处;(4)散布与并列指数(Interspersionand JuxtapositionIndex,IJI)和分离度指数(Splitting Index,SPLIT)对各县(市、区)ESV的影响呈负向抑制作用为主,欧几里得最邻近距离(Euclidean Nearest Neighbor Distance,ENN)的影响由负向作用向正向作用过渡,而香农多样性指数(Shannon's Diversity Index,SHDI)的影响总体呈正向促进作用且强度逐渐增强,同时4种景观指数的影响强度时空分异性明显。[结论]土地利用及景观格局变化对ESV的影响具有时空分异特征,在赣东北生态环境保护工作中应当采用差异化管理模式。
- Abstract:
- [Objective] The aims of this study are to examine the response of ecosystem service value(ESV)to the change in land use and landscape pattern, and to provide reference for maintaining the functional stability of the ecosystem in northeast of Jiangxi Province and building a regional ecological safety barrier. [Methods] Based on four periods of land use data from 1990 to 2020, the spatial and temporal change of land use, landscape pattern and ESV in northeast Jiangxi were measured by spatial analysis and statistics within Geographic Information System(GIS)package. Meanwhile, the elasticity coefficient and Geographically and Temporally Weighted Regression(GTWR)model were respectively introduced to explore the impacts of land use and landscape pattern change on ESV. [Results](1)Woodland and cultivated land were the main land use types, and except for the increase in waters and urban area, other land use had experienced a decrease, which made regional landscape fragmented and complicated.(2)The total amount of ESV had gained an increase with woodland and waters being the main contributors to the ecosystem, accounting for over 89% of the total. The distribution and changes of ESV in various counties were mainly influenced by waters, woodland and urban area.(3)The regions with the highest elasticity coefficient(EC)(>5)were mainly located along the Poyang Lake and its water system, and around the prosperous area of each county center, while the areas with high EC(i. e., 3<EC≤5)mainly distributed around the borders of the study area,(4)The influence of the Interspersionand Juxtaposition Index(IJI)and Splitting Index(SPLIT)on ESV in each county was mainly a negative inhibition, and the influence of the Euclidean Nearest Neighbor Distance(ENN)was transitional from negative to positive while the influence of the Shannon's Diversity Index(SHDI)was generally positive and its intensity had been gradually increasing. [Conclusion] The influence intensity of the four landscape indices shows a clear spatiotemporal difference. The effect of change in land use and landscape pattern on ESV are also of spatiotemporal variability and should be treated differently in ecological and environmental protection in the study area.
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备注/Memo
收稿日期:2023-04-04 修回日期:2023-07-06
资助项目:2019年江西省“双千计划”项目(900/2120800004)
第一作者:谢梦(1993—),女,江西上饶人,硕士研究生,主要从事生态环境与土地利用研究。E-mail:2468954052@qq.com
通信作者:吴伟成(1964—),男,浙江金华人,博士,教授、博导,主要从事土地利用变化监测和模拟及其生态环境效应研究。E-mail:wuwch@ecut.edu.cn