哈尔滨市土壤保持服务价值时空演变及其驱动力
Spatiotemporal Evolution of Soil Conservation Founction Value and Its Driving Forces in Harbin City
祁玉馨 1赵聪聪 1申沛鑫 1任术 1胡远东1
作者信息
- 1. 东北林业大学园林学院,黑龙江哈尔滨 150040
- 折叠
摘要
[目的]土壤侵蚀是全球性的重要环境问题,严重制约了人类的生产和生活.定量研究土壤保持服务价值为区域水土保持措施的制定,哈尔滨市水土保持功能分区规划提供科学依据.[方法]基于InVEST模型泥沙输移比例模块,对哈尔滨市2000,2010,2020年的土壤侵蚀量和土壤保持量进行评估,借助空间自相关法分析土壤保持量的空间聚集类型,并利用参数最优地理探测器揭示其空间异质性形成的驱动力.[结果]①2000,2010,2020年哈尔滨市土壤保持量分别为2.18×109,2.07×109,2.77× 109 t,呈现先减少后增加的趋势,整体呈现"西低东高"的空间分布格局;②土壤保持量呈现强烈的空间正相关,以低—低聚集和高—高聚集类型为主,低—低聚集类型面积呈现下降趋势,而高—高聚集类型则呈现先降低后上升的趋势;③高程、降水量和坡度对哈尔滨市土壤保持量空间异质性的解释力最强,平均解释力分别为0.225 9,0.198 9,0.180 4,其中坡度和降水量与其他因子的交互作用,是研究区解释力最强的交互因素.[结论]哈尔滨市应加强对城市西部和松花江沿岸的水土治理,同时维持城市北部和东部良好的水土状况,避免大规模的人类干扰活动.
Abstract
[Objective]Soil erosion is an important environmental problem of globality,which seriously restricts human production and life.Soil maintenance conservation founction was quantitative studied to formulate the regional soil and water conservation measures,and provide scientific basis for the functional partition planning and governance of Harbin City.[Methods]Based on the InVEST model sediment delivery ratio module,this study evaluated the soil erosion and soil conservation in 2000,2010 and 2020 in Harbin,analyzed the spatial aggregation type of soil conservation with the help of spatial autocorrelation,and used the optimal geographic detector to reveal the driving forces of spatial heterogeneity.[Results]① In 2000,2010 and 2020,the soil conservation in Harbin City was 2.18 × 109,2.07 × 109,and 2.77 × 109 t,respectively,showing a trend of decreasing first and then increasing,and the overall spatial distribution pattern of"low in the west and high in the east".② The soil conservation amount showed a strong spatial positive correlation,mainly"low-low aggregation"and"high-high aggregation"types,the"low-low aggregation"type area showed a downward trend,while the"high-high aggregation"type showed a decreasing and then rising trend.③ Elevation,precipitation and slope had the strongest explanatory power on the spatial heterogeneity of soil conservation in Harbin City,with average explanatory forces of 0.225 9,0.198 9 and 0.180 4,respectively,and the interaction between slope and precipitation and other factors was the strongest explanatory interaction factor in the study area.[Conclusion]Water and soil management in the western part of Harbin City and along the Songhua River should be strengthened,while good water and soil conditions in the north and east of the city should be maintained to avoid large-scale human disturbance activities.
关键词
InVEST模型/土壤保持/地理探测器/空间自相关/哈尔滨市Key words
InVEST model/soil conservation/Geodetector/spatial autocorrelation/Harbin City引用本文复制引用
基金项目
黑龙江省重点研发计划指导类项目(GZ20220117)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据