华北水利水电大学学报（自然科学版）2025，Vol.46Issue(4)：10-18,9.DOI:10.19760/j.ncwu.zk.2025053
基于土地利用变化的黄河流域河南段景观生态风险评估
Landscape Ecological Risk Assessment of Henan Section of Yellow River Basin Based on Land Use Change
摘要
Abstract
[Objective]As an essential ecological barrier and agricultural base,the Henan section of the Yellow River Basin plays a critical role in regional development in terms of ecological security and sustainable land resource utilization.This study aims to analyze the characteristics of land use change from 1990 to 2020,assess the spatiotemporal evolution of landscape eco-logical risks,and explore their correlation with land use changes,thereby providing scientific support for ecological conserva-tion,landscape pattern optimization,and land resource management in the Henan section of the Yellow River Basin.[Methods]Based on remote sensing images from four time periods(1990,2000,2010,and 2020),land use types were in-terpreted and their conversion characteristics were analyzed.A landscape ecological risk assessment model was constructed at the basin scale.Spatial autocorrelation analysis was conducted to examine the spatiotemporal differentiation and clustering fea-tures of ecological risks,and the impact mechanisms of human activity disturbances on high-risk areas were explored.[Results](1)Land use changed significantly:from 1990 to 2020,large areas of cropland were converted to construction land,forests,grasslands,and water bodies,with conversion to construction land being the most prominent as its area doub-led.(2)Overall landscape ecological risk declined,with the areas of relatively low and low-risk zones increasing year by year,while high,relatively high,and medium-risk zones saw significant reductions.(3)Spatial distribution of ecological risk exhibited positive spatial correlation,characterized by a pattern of"large clusters,small dispersions".The clustering of high-risk areas was mainly driven by landscape fragmentation resulting from human activities.[Conclusion]The landscape ecological risk in the Henan section of the Yellow River Basin has generally improved,but the expansion of construction land and landscape fragmentation remain potential threats to ecological security.It is recommended to further optimize landscape patterns and achieve a balance between human activities and ecological conservation.关键词
土地利用/景观生态风险/黄河流域/空间自相关Key words
land use/landscape ecological risk/Yellow River/spatial autocorrelation分类
管理科学引用本文复制引用
邢译丹,花玉凤,唐磊,王富强,张红璐,杜宇湉,石家豪..基于土地利用变化的黄河流域河南段景观生态风险评估[J].华北水利水电大学学报（自然科学版）,2025,46(4):10-18,9.基金项目
国家自然科学基金项目(U2443203,52279014,52109085) （U2443203,52279014,52109085）
河南省重点研发与推广专项(科技攻关)(232102320257) （科技攻关）
流域生态水文效应与水安全创新型科技团队培育项目(CXTDPY-3) （CXTDPY-3）
省部共建西北旱区生态水利国家重点实验室(西安理工大学)开发研究基金资助课题(2022KFKT-3) （西安理工大学）
农业重大科技专项(NK202319020506). （NK202319020506）
