Wang Yinlong,Gao Ruizhong,Fang Lijing,et al.Spatial-Temporal Evolution and Driving Factors of Hydrological Cycle Factors in Inland River Basin of Inner Mongolia Gassland[J].Research of Soil and Water Conservation,2024,31(05):279-287.[doi:10.13869/j.cnki.rswc.2024.05.009]
内蒙古草原内陆河流域水文循环要素时空演变及驱动因素
- Title:
- Spatial-Temporal Evolution and Driving Factors of Hydrological Cycle Factors in Inland River Basin of Inner Mongolia Gassland
- 文章编号:
- 1005-3409(2024)05-0279-09
- Keywords:
- grassland inland river basin; climate change; vegetation dynamics; hydrological response; trend analysis
- 分类号:
- P339
- 文献标志码:
- A
- 摘要:
- [目的]开展内蒙古草原内陆河流域水文循环要素对植被动态和气候变化的响应研究,对于内蒙古草原内陆河流域的生态保护及区域水资源开发利用具有重要的理论意义。[方法]以内蒙古草原内陆河流域为研究区,基于多源遥感、气候气象、水文等数据,采用趋势检验、显著性检验和相关性分析等方法,对流域水文循环要素的时空演变及驱动因素进行相关分析。[结果](1)流域蒸散发呈显著上升趋势(0.994 mm/a),降水量呈显著下降趋势(2.69 mm/a),土壤水分呈增加趋势,其中子流域锡林河径流呈下降趋势,巴拉格尔河径流呈上升趋势;(2)生长季植被总体呈增加趋势,植被归一化指数(NDVI)、总初级生产力(GPP)和叶面积指数(LAI)整体呈东高西低的阶梯状空间分布格局,气温整体呈现上升趋势;(3)植被变化与蒸散发(ET)、土壤水分(SSM)呈正相关,气温和蒸散发整体上呈现显著正相关(R=0.699,p=0.01),空间相关性由西向东递增; 气温和径流呈负相关,和土壤水分在流域东、西部呈显著负相关性。[结论]流域水文循环变量(降水、蒸散发、土壤水分、径流量)随着植被增加而增加; 降水、土壤水分和径流量随气温上升而减少,蒸散发随气温上升而增加。
- Abstract:
- [Objective]The aim of this study is to examine the response of hydrological cycle factors to vegetation dynamics and climate change in the inland river basin of Inner Mongolia grassland, which is of important theoretical significance for the ecological protection and regional water resources development and utilization in the inland river basin of Inner Mongolia grassland. [Methods]The inland river basin of Inner Mongolia grassland was taken as the research area. Based on multi-source remote sensing, climate, meteorology, hydrology and other data, the temporal and spatial evolution and driving factors of hydrological cycle elements in the basin were analyzed by trend test, significance test and correlation analysis. [Results](1)The evapotranspiration of the basin showed a significant upward trend( 0.994 mm/a ), the precipitation showed a significant downward trend( 1.965 mm/a ), and the soil moisture showed an increasing trend.(2)The vegetation in the growing season generally showed an increasing trend. The normalized difference vegetation index(NDVI), gross primary productivity(GPP)and leaf area index(LAI)showed a ladder-like spatial distribution pattern of high level in the east and low level in the west, and the temperature showed an overall upward trend.(3)Vegetation change was positively correlated with evapotranspiration(ET)and soil moisture(SSM). There was a significant positive correlation between temperature and evapotranspiration(R=0.699, p=0.01 ), and the spatial correlation increased from west to east. There was a negative correlation between temperature and runoff, and a significant negative correlation with soil moisture in the east and west of the basin. [Conclusion]The hydrological cycle variables(precipitation, evapotranspiration, soil moisture, runoff)increased with the increase of vegetation. Precipitation, soil moisture and runoff decreased with the increase of temperature, and evapotranspiration increased with the increase of temperature.
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备注/Memo
收稿日期:2023-11-01 修回日期:2023-11-25
资助项目:国家自然科学基金“草原煤田开采驱动下流域水文-生态-地质演化机制及协同效应研究”(52169004); “寒旱区高原内陆河草原流域生态水文-化学协同演化过程试验与模拟研究”(51969022)
第一作者:王银龙(1998—),男,内蒙古通辽人,硕士研究生,主要研究方向为生态水文。E-mail:2914500061@qq.com
通信作者:高瑞忠(1977—),男,内蒙古呼和浩特人,博士,教授,研究方向为寒旱区生态水文过程。E-mail:ruizhonggao@qq.com