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中国沙漠 ›› 2026, Vol. 46 ›› Issue (2): 348-357.DOI: 10.7522/j.issn.1000-694X.2025.00151

• • 上一篇    

20012020年科尔沁沙地植被净初级生产力动态及驱动力

韩博(), 张靖, 王晓光, 霍光伟, 廖佩莹, 杨子骁, 陶奕彤, 乌云娜()   

  1. 大连民族大学 环境与资源学院,辽宁 大连 116600
  • 收稿日期:2025-05-01 修回日期:2025-06-03 出版日期:2026-03-20 发布日期:2026-04-13
  • 通讯作者: 乌云娜
  • 作者简介:韩博(2001—),男,河北承德人,硕士,主要从事草地生态学研究。E-mail: 15233462001@163.com
  • 基金资助:
    国家自然科学基金项目(32471643);中央高校基本科研业务费项目(044420250082)

Dynamic characteristics and driving forces of net primary productivity of vegetation in Horqin Sandy Land in 2001-2020

Bo Han(), Jing Zhang, Xiaoguang Wang, Guangwei Huo, Peiying Liao, Zixiao Yang, Yitong Tao, Yunna Wu()   

  1. College of Environment and Resources,Dalian Minzu University,Dalian 116600,Liaoning,China
  • Received:2025-05-01 Revised:2025-06-03 Online:2026-03-20 Published:2026-04-13
  • Contact: Yunna Wu

摘要:

植被净初级生产力(Net Primary Productivity,NPP)是评估植被生产能力和碳汇潜力的重要指标。然而对相同地理单元不同干湿分区的净初级生产力研究存在不足。本研究以MOD17A3HGF数据集的NPP数据、气象数据、干燥度指数和植被类型数据等为基础,采用趋势分析和偏导数分析等方法,探究2001—2020年科尔沁沙地植被NPP时空变化特征,量化气候因子及人类活动对NPP变化的贡献。结果表明:(1)科尔沁沙地NPP变化特征具有明显的空间异质性,呈现由中部向东西逐渐升高的分布格局,均值为255.29 g·m-2;(2)2001—2020年,97.15%的科尔沁沙地NPP呈现极显著上升趋势(P<0.001),NPP平均每年增加4.06 g·m-2;(3)科尔沁沙地不同干燥度分区内植被NPP的恢复驱动因素不同,半干旱区受气候因素和人类活动的共同作用,半湿润区以气候作用为主,湿润区以人类活动作用为主。多干燥度分区下,对不同驱动因素对NPP的变化贡献率阐释,对优化科尔沁沙地产业结构与推进生态保护修复工程具有重要的理论意义和实践指导价值。

关键词: 净初级生产力, 驱动因素, 气候因子, 人类活动, 科尔沁沙地

Abstract:

Vegetation net primary productivity (NPP) is an important index to evaluate vegetation production capacity and carbon sink potential. However, there is a lack of research on NPP in different dry and wet partitions of the same geographical unit. Based on the NPP data, meteorological data, aridity index and vegetation type data provided by MOD17A3HGF data set, this study used trend analysis and partial derivative analysis to explore the spatial and temporal variation characteristics of vegetation NPP in Horqin Sandy Land from 2001 to 2020, and quantified the contribution of climate factors and human activities to NPP changes. The study found that : (1) The variation characteristics of NPP in Horqin Sandy Land have obvious spatial heterogeneity, showing a distribution pattern that gradually increases from the middle to the east and west, with an average value of 255.29 g·m-2;(2) From 2001 to 2020, the NPP of 97.15% of Horqin Sandy Land showed a very significant upward trend (P<0.001), with an average annual increase of 4.06 g·m-2; (3) The driving factors of vegetation NPP recovery in different aridity areas of Horqin Sandy Land are different. The semi-arid area is affected by climate factors and human activities. The semi-humid area is dominated by climate, and the humid area is dominated by human activities. This study better explains the contribution rate of different driving factors to the change of NPP under multiple dryness partitions, which has theoretical significance and practical guiding value for optimizing the industrial structure of Horqin Sandy Land and promoting ecological protection and restoration projects in China.

Key words: net primary productivity, driving factors, climatic factor, human activities, Horqin Sandy Land

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