干旱区研究 ›› 2018, Vol. 35 ›› Issue (3): 743-752.doi: 10.13866/j.azr.2018.03.30

• 其他 • 上一篇    

黑河中游净初级生产力的人类占用时空分异

李枫, 蒙吉军   

  1. 北京大学城市与环境学院,地表过程分析与模拟教育部重点实验室,北京 100871
  • 收稿日期:2017-09-09 修回日期:2018-01-18 出版日期:2018-05-15 发布日期:2025-11-17
  • 通讯作者: 蒙吉军.E-mail:jijunm@pku.edu.cn
  • 作者简介:李枫(1992-),男,硕士研究生,主要从事土地生态方面的研究.E-mail:fengli92@pku.edu.cn
  • 基金资助:
    国家自然科学基金项目“水资源约束下黑河中游土地利用的生态适应性研究”(41371097)资助

Temporal and Spatial Variation of Human Appropriation of Net Primary Productivity in the Middle Reaches of the Heihe River Basin

LI Feng, MENG Ji-jun   

  1. Key Laboratory of Earth Surface Processes of Ministry of Education,College of Urban and Environmental Sciences,Peking University,Beijing 100871,China
  • Received:2017-09-09 Revised:2018-01-18 Published:2018-05-15 Online:2025-11-17

摘要: 净初级生产力的人类占用(HANPP)是评估人类通过土地利用活动对生态系统影响的重要手段。采用遥感影像数据和社会经济统计数据,通过Thornthwaite Memorial模型、改进的CASA模型和全局空间自相关等方法,对黑河中游HANPP时空分异规律进行了研究。结果显示:① 2001—2013年,在粮食产量逐年递增的情况下,黑河中游HANPP有明显的波动,与降水量的年际波动直接相关;HANPP率一直维持在较高的水平(38%~71%);② HANPP空间格局变化显著,从民乐、山丹的南部较高的地区转移到了张掖市区的远郊和山丹中部,HANPP的空间格局直接受制于实际净初级生产力的空间格局; ③ HANPP存在一定的空间正自相关关系,2001—2013年HANPP整体相关性几乎没有变化。该研究对作为生态脆弱区的黑河中游在未来权衡经济发展和生态保护具有借鉴意义。

关键词: 净初级生产力的人类占用(HANPP), 土地利用, 时空分异, 可持续性, 黑河中游

Abstract: The human appropriation of net primary productivity (HANPP) is an important measure to evaluate the impact of land use on ecosystems.In this paper,the temporal and spatial distribution of HANPP in the middle reaches of the Heihe River Basin was estimated by Thornthwaite Memorial model,advanced CASA model calculation and statistical data,and then analyzed by the spatial correlation method.Temporally,in the case of grain yield increase year by year,the HANPP of the Heihe River Basin is fluctuated significantly,which is mainly driven by the fluctuation of precipitation.However,the HANPP ratio is at a relatively high level,ranging from 38% to 71%.Spatially,HANPP’s spatial pattern has been significantly altered.The high value of HANPP in the region has been transferred from the southern region of Minle County and Shandan County to away from Zhangye City and Shandan County.HANPP’s spatial pattern is related to the spatial pattern of actual net primary productivity.During the period from 2001 to 2013,HANPP had a positive spatial auto-correlation,which remained stable as a whole.The conclusion of this paper is of referential significance for the tradeoff of the economic development and ecological protection in the middle reaches of the Heihe River Basin as an ecological fragile area in the future.

Key words: HANPP, land use, spatial and temporal variation, sustainability, the middle reaches of the Heihe River Basin