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基于InVEST模型的甬江流域水源供给功能时空变化特征 被引量:6

Spatiotemporal variation characteristics of water supply function of Yongjiang River Basin based on InVEST Model
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摘要 甬江流域是浙江七大水系之一,研究其流域水源供给生态系统服务对于加快浙东地区生态文明建设、促进区域高质量发展具有重要意义。基于甬江流域三期土地利用、气象、土壤等数据,估算了流域不同时期的水源供给能力及分析了产水量的地形梯度效应。结果表明:甬江流域土地利用类型以农田、林地为主,建设用地趋于大幅扩张,其他地类面积趋于缩减。土地利用类型间转换剧烈;流域年平均产水总量约为3.069×10^(8)m^(3),产水量呈下降趋势。甬江流域产水量以中上游产水量较高,如姚江、鄞江和剡溪江流域,且农田、林地对流域产水量贡献度较高;甬江流域地形位指数集中分布在第1等级,且产水量地形梯度效应较为显著。 As one of the seven major river systems in Zhejiang,the Yongjiang River Basin plays an important role in the construction of ecological civilization and regional high-quality development in eastern Zhejiang.Based on three sets of land use,meteorology and soil data of the Yongjiang River Basin,the water supply capacity of different periods was estimated,and the topographic gradient effect of water yield was analyzed.The results showed that the land use types in the Yongjiang River Basin were mainly farmland and forest.The construction land expanded significantly,whereas the area of other land types decreased.The conversion between different land use types was frequent.The average total water yield in the basin was about 3.069×10^(8)m^(3),showing a downward trend.The water yield in the upper and middle reaches of the Yongjiang River Basin was relatively high,such as the Yaojiang River Sub-basin,Yinjiang River Sub-basin and Shanxijiang River Sub-basin,and the contribution of farmland and forest to the water yield of the basin was relatively high.The topographic index of the Yongjiang River Basin was mainly distributed in the first level,and the topographic gradient effect of water yield was significant.
作者 杨昀则 田鹏 张海涛 沈杏雯 曹罗丹 李加林 YANG Yunze;TIAN Peng;ZHANG Haitao;SHEN Xingwen;CAO Luodan;LI Jialin(School of Civil and Environmental Engineering,Ningbo University,Ningbo 315211,China;Faculty of Geography Science and Tourism Culture,Ningbo University,Ningbo 315211,China;Ningbo University Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance Research,Ningbo 315211,China)
出处 《水资源与水工程学报》 CSCD 北大核心 2021年第5期107-117,共11页 Journal of Water Resources and Water Engineering
基金 国家自然科学基金项目(41976209) 浙江省自然科学基金项目(LQ20D010006)。
关键词 水源供给 产水量时空变化 地形位指数 InVEST模型 甬江流域 water supply spatiotemporal variation of water yield topographic index InVEST model Yongjiang River Basin
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