生态学报2026，Vol.46Issue(4)：1853-1871,19.DOI:10.20103/j.stxb.202506261622
基于多模型耦合的滇东南岩溶湖泊流域生境质量评估及模拟
Habitat quality assessment and simulation of karst lake watershed in Southeastern Yunnan by multi-model coupling
摘要
Abstract
As a core component of the karst region in Southwest China,the Yunnan-Guizhou Plateau is characterized by extensive outcrops and widespread distribution of carbonate rocks.It functions not only as a critical ecological security barrier in Southwest China but also as a region with fragile ecosystems and concentrated ethnic minority communities.Plateau lake watersheds,as the most intensively exploited regions across the Yunnan-Guizhou Plateau,serves as ecological transition zones highly vulnerable to anthropogenic disturbances.The dynamic evolution of habitat quality in these basins directly impacts rivers' water conservation capacity,water resource allocation,and aquatic ecological security,while exerting far-reaching effects on local socio-economic development trajectories as well as agricultural production and construction.By integrating the In VEST model for habitat quality(HQ)assessment of karst lake watersheds with the Remote Sensing based Ecological Index(RSEI)model,this study aimed to enhance data reliability in habitat quality assessments of the Puzhehei watershed in Southeastern Yunnan.This approach enabled a comprehensive analysis of dynamic evolution patterns and future trends of habitat quality within the karst lake watershed.Key findings were as follows:(1)The RSEI value exhibited three temporal phases:initial decline,subsequent fluctuations,and a final upward trend.The basin-wide mean declined by 0.136 from 1990 to 2020,corresponding to an average annual decrease rate of 0.59%,primarily observed at ecological grade-1 and-2(48.90%,24.80%).(2)Temporal analysis of habitat quality revealed a trend of initial decline,followed by recovery,and subsequent decline.The basin-wide mean remained relatively stable from 1985 to 2020,fluctuating between 0.36 and 0.39,and consistently maintained ecological grade 2(0.20＜HQ≤0.40),spanning 200.000-220.000 km2(60.00%—65.00%).(3)Incorporation of RSEI data demonstrated congruence between habitat quality and RSEI trends.Habitat quality declined by 0.132 from 1990 to 2020(average annual decrease:0.73%),manifested as a shift from ecological grade 3-4(32.78%,62.86%)in 1990 to grade 2-3(16.61%,81.65%)in 2020.Through systematic optimization,comparative analysis,and predictive modeling,the regional ecology of Puzhehei watershed in Southeastern Yunnan was shown to be in decline.Key differences were reflected in overall trends,extreme value distribution,mean value changes,and ecological grades.Model integration enhanced the scientific rigor of conclusions,providing a robust foundation for ecosystem protection in karst lake watersheds.Targeted conservation strategies were therefore essential for sustainable management of the Puzhehei watershed in Southeastern Yunnan.关键词
多模型耦合/生境质量评估/模拟与预测/岩溶湖泊/滇东南普者黑流域Key words
multi-model coupling/habitat quality assessment/simulation and prediction/karst lake/Puzhehei watershed in Southeastern Yunnan引用本文复制引用
张诗文,刘入菊,田震,李子豪,周金星..基于多模型耦合的滇东南岩溶湖泊流域生境质量评估及模拟[J].生态学报,2026,46(4):1853-1871,19.基金项目
国家重点研发计划项目(2022YFF1302900) （2022YFF1302900）
国家自然科学基金项目(31870707) （31870707）
西藏自治区重大科技专项项目(XZ202201ZD0005G04) （XZ202201ZD0005G04）
浙江省生态环境监测中心项目(EEBD-2024-04) （EEBD-2024-04）
