ICS13 CCSZ 5354 西 藏 自 治 区 地 方 标 准 DB54/T 0430—2025 河湖健康评价规范 2025-01-21发布 2025-02-21实施 西藏自治区市场监督管理局  发 布 DB54/T 0430—2025 I目 次 前 言...........................................................................III 1 范围.................................................................................1 2 规范性引用文件.......................................................................1 3 术语和定义...........................................................................1 4 总体要求.............................................................................2 5 分级标准.............................................................................2 6 工作流程.............................................................................2 6.1 资料收集.........................................................................2 6.2 河流分段.........................................................................3 6.3 湖泊分区.........................................................................3 6.4 调查位置.........................................................................3 6.5 监测内容.........................................................................3 6.6 评价分析.........................................................................3 6.7 报告编制.........................................................................3 7 评价指标体系.........................................................................4 8 指标评价方法与赋分标准...............................................................6 8.1 “盆”...........................................................................6 8.1.1 河流纵向连通指数.............................................................6 8.1.2 湖泊连通指数.................................................................6 8.1.3 湖泊面积萎缩比例.............................................................7 8.1.4 岸线自然状况.................................................................7 8.1.5 河岸带宽度指数...............................................................9 8.1.6 水域岸线管护规范整洁程度....................................................10 8.2 “水”..........................................................................11 8.2.1 生态流量满足程度............................................................11 8.2.2 最低生态水位满足程度........................................................12 8.2.3 流量过程变异程度............................................................12 8.2.4 入湖流量变异程度............................................................12 8.2.5 水质优劣程度................................................................13 8.2.6 湖泊营养状态................................................................14 8.3 生物............................................................................14 8.3.1 大型底栖无脊椎动物生物多样性指数............................................14 8.3.2 鱼类保有指数/鱼类多样性指数.................................................14 8.3.3 水鸟状况....................................................................15 8.3.4 浮游植物状况................................................................15 8.3.5 着生藻类多样性指数..........................................................16 8.4 社会服务功能....................................................................16 8.4.1 防洪达标率..................................................................16 DB54/T 0430—2025 II8.4.2 供水水量保证程度............................................................17 8.4.3 岸线利用管理指数............................................................17 8.4.4 河流（湖泊）集中式饮用水水源地水质达标率....................................17 8.4.5 公众满意度..................................................................18 8.5 自选指标评价标准建立............................................................18 8.5.1 评价标准确定方法............................................................18 8.5.2 自选指标建立要求............................................................18 9 河湖健康评价赋分....................................................................18 9.1 计算权重........................................................................18 9.2 赋分方法........................................................................19 附 录A （规