College of Earth Sciences, Jilin University, Changchun 130061, China.
Faculty of Built Environment, University of Malaya, Kuala Lumpur 50603, Malaysia.
Int J Environ Res Public Health. 2022 Apr 14;19(8):4760. doi: 10.3390/ijerph19084760.
This study aimed to quantitatively describe the ecosystem services of soda saline-alkali grasslands based on literature research, the InVEST model, a transition matrix, and Spearman's correlation analysis. The chosen methodology could provide insight into the relationships between different services to provide empirical evidence for decision-making concerning the protection and restoration of saline-alkali grasslands. The research provided several insights into the ecological situation in western Jilin Province. First, the area of saline-alkali grassland in western Jilin Province had noticeably decreased from 1990 to 2018. Moreover, the threat of grassland degradation in western Jilin Province has increased year by year, and has become the main problem facing the ecological environment of this region. Second, the results demonstrated how the amount of grassland area, and coverage, are intricately linked to the provided ecosystem services, and maintaining the stability of ecosystem services is the basis for future efforts to increase grassland area and coverage. A trade-off relationship exists between water supply services and other ecosystem services, which indirectly confirms a climatic cause for grassland salinization in western Jilin Province. The analyses identified various types of grassland ecosystem service hotspots, but the share of hotspots representing all four assessed ecosystem services was small; this indicates that the grassland ecosystem of western Jilin Province is of generally poor quality. In conclusion, increasing grassland salinization has reduced vegetation coverage, which leads to the degradation of the grassland ecosystem and, in turn, affects the relationships between various ecosystem services.
本研究旨在通过文献研究、InVEST 模型、转换矩阵和 Spearman 相关性分析，定量描述苏打盐碱草地的生态系统服务。所选方法可以深入了解不同服务之间的关系，为保护和恢复盐碱草地的决策提供经验证据。研究为了解吉林省西部的生态状况提供了一些见解。首先，吉林省西部的盐碱草地面积从 1990 年到 2018 年明显减少。其次，吉林省西部草原退化的威胁逐年增加，已成为该地区生态环境面临的主要问题。第三，研究结果表明，草地面积和覆盖度与提供的生态系统服务之间存在着复杂的关系，维持生态系统服务的稳定性是未来增加草地面积和覆盖度的基础。供水服务与其他生态系统服务之间存在权衡关系，这间接证实了吉林省西部草原盐渍化的气候原因。分析确定了各种类型的草地生态系统服务热点，但代表所有四种评估的生态系统服务的热点份额很小；这表明吉林省西部的草地生态系统总体质量较差。总之，草原盐渍化的增加降低了植被覆盖率，导致草地生态系统退化，进而影响了各种生态系统服务之间的关系。
