| 摘要: |
| 为研究新疆生物多样性和生态系统服务关系，利用InVEST模型和RWEQ模型分析了2000—2020年新疆食物供给、碳储存、生境质量和防风固沙4种生态系统服务的时空变化特征，利用Spearman方法探讨生物多样性对生态系统服务的影响。结果表明：南北疆生物多样性存在明显空间分异，北疆多样性优于南疆。植物丰富度热点地区主要为天山以西、阿尔泰山以西，准噶尔盆地西部山区，动物则整体上与植物丰富度热点地区空间分布一致，且分布范围更广。2000—2020年新疆食物供给呈现先增加后减少的趋势，碳储存和防风固沙服务逐渐增加，生境质量呈下降趋势。全疆碳储存、生境质量和食物供给3种服务间主要呈现协同关系，防风固沙和食物供给、碳储存、生境质量服务之间主要呈现权衡关系且在2020年其相关性有所更强。随着物种丰富度的提高，食物供给、碳储存、生境质量和防风固沙服务变化趋势各异，整体上都在高或较高等级上供给水平最高。同物种丰富度等级上生态系统服务关系呈现出较强的空间异质性，整体上看，在物种丰富度中、较高和高级上生态系统服务协同关系最强或是权衡关系最弱，说明较高的物种丰富度能够协调各生态系统服务之间的关系。研究成果对加深生物多样性重要性认识和实现生态系统服务协调发展具有重要意义。 |
| 关键词: 新疆 生物多样性 生态系统服务 权衡与协同 InVEST模型 |
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| 基金项目:国家重点研发计划项目 |
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| Research on the relationship between biodiversity and ecosystem services in Xinjiang |
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| Abstract: |
| To study the relationship between biodiversity and ecosystem services in Xinjiang, using, InVEST model and the RWEQ model to analyze food supply, carbon storage, habitat quality and sand fixation services. Divide the richness of plant and animal species into 5 levels according to the natural breakpoint classification method, and use Spearman method to explore the synergistic relationship between species richness and ecosystem service trade-offs. The results shown that: The high value areas of food supply, carbon storage and habitat quality services were mainly distributed in the Altay Mount Taishan, Tianshan and Kunlun Mountains, and the high value areas of sand fixation services are mainly distributed in the central and eastern Tarim Basin and the southeastern the Junggar Basin. From 2000 to 2020, the food supply in Xinjiang region showed a trend of first increasing and then decreasing, with carbon storage sand fixation services gradually improving, and habitat quality showing a downward trend. The three services of carbon storage, habitat quality, and food supply in Xinjiang mainly exhibited synergistic relationship, while the trade-off between sand fixation and food supply, carbon storage, and habitat quality services is mainly present, and its correlation has become stronger in 2020. The highest levels of animal species richness include carbon storage and habitat quality services, food supply services, and wind and sand control services. As the richness of plant species increases, the supply capacity of carbon storage and habitat quality services gradually improves. The supply capacity of food supply services is strongest at the advanced level, and the supply level of wind and sand fixation services is highest at the intermediate level. The ecosystem service relationship shows strong spatial heterogeneity at different species richness levels. On the whole, the ecosystem service synergy relationship is the strongest or the trade-off relationship is the weakest at the middle, high and high levels of species richness, indicating that higher species richness can coordinate the relationship between ecosystem services. The research results are of great significance for deepening the understanding of the importance of biodiversity and achieving coordinated development of ecosystem services. |
| Key words: Xinjiang, biodiversity ecosystem services trade-off and synergy species richness InVEST model |
