文献类型：期刊文献

中文题名：长潭水库小流域地表水质对景观格局的响应特征及尺度效应研究

英文题名：Study on the Response Characteristics and Scale Effects of Surface Water Quality to Landscape Patterns in the Small Watershed of Changtan Reservoir

作者：邹奕巧[1] 赵钿钿[2,3] 马桂莲[4] 吴江[4] 林雪锋[1] 盖旭[2] 张涵丹[2] 陈光才[2]

第一作者：邹奕巧

机构：[1]台州市国土空间整治与生态修复中心,浙江台州318000;[2]中国林业科学研究院亚热带林业研究所,杭州311400;[3]东北林业大学,黑龙江哈尔滨150000;[4]台州市黄岩区林业技术推广总站,浙江台州318020

年份：2025

卷号：34

期号：5

起止页码：1062-1072

中文期刊名：长江流域资源与环境

外文期刊名：Resources and Environment in the Yangtze Basin

收录：;北大核心:【北大核心2023】；

基金：浙江省自然科学基金项目(LTG24D010001);浙江省省院合作林业科技项目(2021SY12)。

语种：中文

中文关键词：景观格局;缓冲区;水质特征;冗余分析

外文关键词：landscape pattern;buffer zone;water quality characteristics;redundancy analysis

分类号：X524

摘要：水质对土地利用和景观格局的变化较为敏感,为探究不同尺度下的景观格局与水质之间的关系,研究以长潭水库为例,基于2021年水质监测数据,对各入库支流以100m为间隔进行缓冲区划分,计算50~650 m7个带状缓冲区的景观特征,并采用Pearman相关分析和冗余分析对水质与景观格局的响应关系进行研究。结果表明:(1)库区小流域以林地为主,耕地和水体次之;林地面积占比随着缓冲半径的增加而增加,耕地和建设用地相反。(2)耕地、建设用地、蔓延度指数(CONTAG)和香农多样性指数(SHDI)与水质指标呈正相关关系,其中耕地是库区水质污染的重要来源;(3)景观格局对水质的解释率在250m半径最高。在该范围内,景观破碎化程度高,人类活动最为强烈。建议在各支流250 m范围内严格控制耕地的耕种模式,通过建设河岸缓冲带、水库前置库等方法来提高对污染物的拦截能力,从而保护库区小流域的水环境安全。
Water quality is sensitive to the changes in land use and landscape patterns.To explore the relationship between landscape patterns and water quality at different scales,Changtan Reservoir watershed was chosen as the research object.Based on 2021 water quality monitoring data,buffer zones were divided at intervals of 100m for each inlet tributary.The landscape characteristics of seven strip-shaped buffer zones ranging from 50 to 650m were calculated.Pearman correlation analysis and redundancy analysis were used to study the response relationship between water quality and landscape patterns.The results showed that:(1)The watershed of the reservoir was primarily composed of forest land,followed by arable land and water bodies.The proportion of forest land area increased with the buffer radius,while the proportion of arable land and construction land areas decreased.(2)Arable land,construction land,Contagion Index(CONTAG),and Shannon Diversity Index(SHDI)were positively correlated with water quality indicators,with arable land being a significant source of water pollution in the reservoir area.(3)The explanatory power of landscape pattern on water quality was highest at a 250m radius.Within this range,the landscape fragmentation was high,and the human activities were intense.It is recommended to strictly control farming practices within 250 meters of each tributary.Approaches including the establishment of riparian buffers and the construction of pre-reservoirs should be implemented to enhance the interception of pollutants,and to protect the water environment safety of the Changtan Reservoir watershed.