北方干旱半干旱区植被覆盖时空变化及其对生态系统服务的影响

石智宇; 董霁红

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中国环境科学 ›› 2026, Vol. 46 ›› Issue (1) : 379-388.

环境生态

北方干旱半干旱区植被覆盖时空变化及其对生态系统服务的影响

石智宇, 董霁红

作者信息 +

Spatiotemporal changes of vegetation cover in arid and semi-arid regions of northern China and its impact on ecosystem services

SHI Zhi-yu, DONG Ji-hong

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文章历史 +

摘要

：分析了2000~2023年北方干旱半干旱区植被覆盖(FVC)变化情况,评估FVC变化对生态系统服务的影响,并对影响阈值进行识别.结果表明:北方干旱半干旱区FVC整体呈现西低东高、北低南高的格局,研究区FVC增加区的面积占比为40.01%.生态系统服务整体由南向北逐渐减少,高值区主要集中在甘肃省南部、新疆西北部等地,低值区主要集中在内蒙古中西部、宁夏北部等地,研究区生态系统服务整体呈增加趋势,呈增加趋势的地区面积占比为85.01%.研究区FVC水平与碳固定服务、土壤保持服务和产水服务整体呈正相关,显著正相关面积占比分别为54.56%、7.9%、11.43%,FVC的增加推动生态系统服务综合指数(CIES)由0.09增至0.23.林地和农田地区的FVC影响阈值不明显,草地植被覆盖达到0.87时,FVC增加的促进作用趋于减弱.

Abstract

Analyzed the changes in vegetation cover (FVC) in the arid and semi-arid regions of northern China from 2000 to 2023, the impacts of FVC changes on ecosystem services were evaluated, and the impact thresholds were identified. The results showed that the FVC in these regions was characterized by a spatial pattern of being low in the west and high in the east, and low in the north and high in the south. Areas with increasing FVC accounted for 40.01% of the total study area. Overall ecosystem services were observed to decrease gradually from south to north, with high-value areas mainly distributed in southern Gansu Province and northwestern Xinjiang, while low-value areas were concentrated in central and western Inner Mongolia and northern Ningxia. The overall trend of ecosystem services was found to be increasing, with 85.01% of the area showing an upward trend. The FVC level was positively correlated with carbon fixation, soil conservation, and water production services, with significantly positive correlation areas accounting for 54.56%, 7.9%, and 11.43%, respectively. The increase in FVC was found to promote the comprehensive ecosystem services index (CIES) from 0.09 to 0.23. The FVC impact threshold in forest and farmland areas was not significant, and the positive effect of increasing FVC tended to weaken when grassland vegetation coverage reached 0.87.

导出引用

石智宇, 董霁红. 北方干旱半干旱区植被覆盖时空变化及其对生态系统服务的影响[J]. 中国环境科学. 2026, 46(1): 379-388

SHI Zhi-yu, DONG Ji-hong. Spatiotemporal changes of vegetation cover in arid and semi-arid regions of northern China and its impact on ecosystem services[J]. China Environmental Science. 2026, 46(1): 379-388

中图分类号： X171.1

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