1. 海南大学 公共管理学院,海南,海口,570228
2. 惠州学院 地理与旅游学院,广东,惠州,516007
纸质出版:2022
移动端阅览
韩念龙, 刘子荣, 贾培宏, 等. 1996—2020年海南岛水源涵养量时空变化及地理探测[J]. 水土保持通报, 2022,42(5):193-201.
Han Nianlong, Liu Zirong, Jia Peihong, et al. Spatio-temporal Changes and Geographic Detection of Water Conservation on Hainan Island from 1996 to 2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(5): 193-201.
韩念龙, 刘子荣, 贾培宏, 等. 1996—2020年海南岛水源涵养量时空变化及地理探测[J]. 水土保持通报, 2022,42(5):193-201. DOI: 10.13961/j.cnki.stbctb.2022.05.025.
Han Nianlong, Liu Zirong, Jia Peihong, et al. Spatio-temporal Changes and Geographic Detection of Water Conservation on Hainan Island from 1996 to 2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(5): 193-201. DOI: 10.13961/j.cnki.stbctb.2022.05.025.
[目的
]
分析影响海南岛水源涵养量时空变化的主要驱动因素,为海南岛生态系统水源涵养功能重点区域识别及保护,水资源管理及区域可持续发展等方面提供决策依据。[方法
]
基于InVEST模型产水量模块,定量分析海南岛1996—2020年水源涵养的时空变化,并对海南岛的水源涵养影响因素展开地理探测分析研究。[结果
]
①1996—2020年海南岛水源涵养总量略微上升,多年平均水源涵养量为41.77 mm,水源涵养总量为1.42×10
9
m
3
。空间上,海南岛水源涵养分布呈现东高西低及北高南低的特征。各地类中,林地的水源涵养能力较强,且面积占比大,对海南岛水源涵养量的贡献显著。②水源涵养量有较强的空间正相关性,呈现明显聚集特征,水源涵养重点区域主要分布于海南岛东中部、东部沿海海岸带以及海口市西部的火山熔岩湿地。③各因子对水源涵养影响力从大到小依次为降水量、土地利用类型、实际蒸散发和高程;因子交互作用,尤其是降水与土地利用的交互显著增强水源涵养分布的解释。[结论
]
气候作用和人类活动主导了海南岛水源涵养量空间格局。未来既要充分考虑气候变化对水源涵养的影响,通过建立有效措施确保海南岛生态系统水源涵养功能有效适应全球变化,又要通过土地资源的合理利用与管理,确保土地生态安全。
[Objective] The main driving factors affecting the spatio-temporal variation of water conservation on Hainan Island were analyzed in order to provide a decision-making basis for the identification and protection of key areas of water conservation function
water resource management
and regional sustainable development of the Hainan Island ecosystem. [Methods] Based on the water yield module of the InVEST model
the spatio-temporal changes in water conservation on Hainan Island from 1996 to 2020 were quantitatively analyzed
and a geographic detection and analysis of the influencing factors of water conservation on Hainan Island was conducted. [Results] ① The total amount of water conservation in Hainan Island increased slightly from 1996 to 2020. The annual average water conservation was 41.77 mm
and the total water conservation was 1.42 billion m3. Water conservation on Hainan Island was high in the east and north
and low in the west and south. Among all land use types
forest had strong water conservation capacity and accounted for a large area
making a significant contribution to the water conservation of Hainan Island. ② Water conservation had a strong positive spatial correlation
showing obvious aggregation characteristics. The key areas of water conservation were mainly located in the eastern and central parts of Hainan Island
the eastern coastal zone
and the volcanic lava wetlands to the west of Haikou City. ③ The influence of each factor on water conservation followed the order of precipitation>actual evapotranspiration>land use pattern>elevation. The interaction of factors
especially the interaction between precipitation and land use pattern
significantly enhanced the distribution of water conservation. [Conclusion] Climate and human activities dominated the spatial pattern of water conservation on Hainan Island. In the future
it is necessary to fully consider the impact of climate change on water conservation
establish effective measures to ensure that the water conservation function of the Hainan Island ecosystem can effectively adapt to global changes
and ensure land ecological security through rational utilization and management of land resources.
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