摘要
基于InVEST模型估算了1990—2018年武烈河流域产水服务功能与氮磷净化能力的时空分布特征,并利用情景模拟法对气候要素与土地利用/覆被的影响程度进行量化。结果表明,武烈河流域产水量呈先减小后增加且总体减小的变化趋势,多年平均产水量为2.69×10^(8)m^(3),TN、TP输出量呈增加趋势,多年平均TN、TP输出量分别为291.52、28.22 t;气候要素与产水量的相关性较强,与TN、TP输出量的相关性较弱;武烈河流域产水量主要来源于林地、草地,占比达73.33%,TN、TP输出量主要来源于耕地,占比分别达83.15%、63.38%,建筑用地产水能力最强,耕地TN、TP输出能力最强;近29年来,气候要素在产水服务功能方面是土地利用/覆被影响程度的41.01倍,在氮磷净化能力方面分别是土地利用/覆被影响程度的0.63、0.36倍。气候变化是产水服务功能变化的主导因素,土地利用/覆被变化是氮磷净化能力变化的主导因素。
The temporal and spatial distribution characteristics of the water yield service function and nitrogen and phosphorus purification capacity were estimated based on the InVEST model in the Wulie River Basin from 1990 to 2018.And the scenario simulation was used to quantify the impact of climate elements and land use.The results showed that the water yield first decreased and then increased,with an overall decreasing trend in the Wulie River Basin,the multi-year average water yield was 2.69×108 m 3.The output of TN and TP were increasing,the average output of TN and TP for many years were 291.52 t and 28.22 t,respectively.The correlation between climatic factors and water yield was strong,and the correlation between climatic factors and TN and TP output was weak.The water yield of Wulie River Basin mainly came from forest and grassland,accounting for 73.33%.The output of TN and TP mainly came from cultivated land,accounting for 83.15%and 63.38%respectively.Construction land had the strongest water yield capacity.Cultivated land had the strongest TN and TP output capacity.Over the past 29 years,climate factors have been 41.01 times the effect of land use in terms of water yield service functions,and 0.63 and 0.36 times the effect of land use in terms of nitrogen and phosphorus purification capacity.Climate change was the leading factor for changes in water yield service functions,and land use/land cover changes was the leading factor for changes in nitrogen and phosphorus purification capacity.
作者
王冶
薛忠财
武智勇
靳松
姜白杨
WANG Ye;XUE Zhong-cai;WU Zhi-yong(College of Resources and Environmental Sciences,Hebei Normal University for Nationalities,Chengde,Hebei 067000;Key Laboratory of Mountain Geological Environment of Hebei Province,Chengde,Hebei 067000)
出处
《安徽农业科学》
CAS
2022年第23期54-60,67,共8页
Journal of Anhui Agricultural Sciences
基金
河北省重点研发计划项目(21327409D,21326401D)
河北民族师范学院博士启动基金项目(DR2019001)
承德市科技支撑计划项目(201904A054)。
关键词
InVEST模型
产水服务
氮磷净化能力
气候要素
土地利用/覆被
武烈河流域
InVEST model
Water yield service
Nitrogen and phosphorus purification capacity
Climatic elements
Land use/land cover changes
Wulie River Basin
