海绵城市的渗滞蓄净用排六字次序,实质上如何颠覆了传统雨水管网以快速外排为中心的设计逻辑?
How does the sponge-city sequence of infiltrate, detain, store, purify, reuse, then drain fundamentally invert the conventional pipe-network logic centered on rapid discharge?
传统设计追求把暴雨尽快送入管网排走,峰值流量原封不动地转嫁给下游河道,内涝与面源污染随之叠加。六字方针要求场地先用透水铺装、绿色屋顶和雨水花园完成入渗滞蓄,再经植草沟等介质净化回用于绿化浇洒,剩余径流才允许接入市政管网。排水由此从末端工程问题转变为贯穿产流全过程的水量水质统筹课题。
Conventional design races stormwater into pipes as fast as possible, handing raw peak flows to downstream rivers and stacking urban flooding onto diffuse pollution. The sponge sequence requires permeable pavement, green roofs, and rain gardens to absorb and detain runoff on site first, then pass it through bioswales for treatment and reuse in irrigation or washing, releasing only the remainder to the municipal network. Drainage thereby shifts from an end-of-pipe engineering task into coordinated management of water quantity and quality across the entire runoff-generation process.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
住房和城乡建设部《海绵城市建设技术指南——低影响开发雨水系统构建(试行)》,2014
Ministry of Housing and Urban-Rural Development, Technical Guide for Sponge City Construction: Low-Impact Development Stormwater System (Trial), 2014
#水资源管理 #海绵城市
确定河流生态流量时,为什么用水文学法算出的最小流量还要经过栖息地模拟的校核?
When setting environmental flows for a river, why should the minimum flow derived from hydrological methods be cross-checked against habitat simulation?
水文学法如Tennant法只刻画历史径流的统计特征,并不能保证目标物种在产卵越冬等关键阶段所需的水深、流速与水温得到满足。PHABSIM一类栖息地模拟把流量与可用生境面积直接关联,能揭示同一流量下生境响应的巨大差异。两类方法结合,才能给出兼顾调度可行性与生态有效性的下泄流量。
Hydrological methods such as the Tennant approach only summarize statistical properties of past runoff and cannot guarantee the depth, velocity or thermal conditions that target species need at spawning or overwintering stages. Habitat simulation tools like PHABSIM link discharge directly to usable habitat area, exposing how habitat response varies sharply under the same flow figure. Only combining the two produces release schedules that are both operable and ecologically effective.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
R.E. Tharme, River Research and Applications, 2003(全球环境流量方法系统评述);D.L. Tennant, Fisheries, 1976(蒙大拿Tennant法原始文献)
R.E. Tharme, River Research and Applications, 2003, global review of environmental flow assessment methods; D.L. Tennant, Fisheries, 1976, original Montana method paper.
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1002/rra.736（复合著录按段核验：本标识只担保该段，其余段未核）
#生态流量 #栖息地模拟
华北平原长期超采深层承压水为何造成地面持续沉降,而且沉降恢复远远滞后于水位回升?
Why does chronic over-pumping of deep confined groundwater keep causing land subsidence on the North China Plain, and why does recovery lag far behind water-level rebound?
承压含水层抽水使孔隙水压力下降,上覆荷载转由黏土颗粒骨架承担,弱透水黏土层被压密释水,其中绝大部分骨架变形不可逆,地表因此累积下沉。相邻砂层的弹性形变虽可随水位回升部分回弹,黏土的非弹性压密却滞后数年乃至数十年。InSAR观测到的沉降漏斗与地下水位降落漏斗空间高度吻合,表明控沉的根本在于严格压采并实施有计划的回灌。
Pumping a confined aquifer drops pore-water pressure, transferring overburden load onto the clay-grain skeleton, so poorly permeable clay interbeds compact and release water with largely irreversible deformation that accumulates at the surface. Elastic deformation of adjacent sand layers rebounds partially as heads recover, but inelastic clay compaction trails behind by years to decades. Subsidence funnels mapped by InSAR align closely with groundwater depression cones, showing that containment hinges on strict extraction limits backed by planned recharge.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
J.F. Poland 主编,UNESCO《地下水开采引发的地面沉降研究指南》,1984;朱琳、宫辉力等,International Journal of Applied Earth Observation and Geoinformation, 2015(华北/北京平原InSAR沉降监测)
J.F. Poland ed., Guidebook to Studies of Land Subsidence due to Ground-Water Withdrawal, UNESCO, 1984; L. Zhu and H. Gong et al., International Journal of Applied Earth Observation and Geoinformation, 2015, InSAR monitoring of subsidence on the North China Plain.
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL19185527W：Guidebook to studies o
#承压含水层 #地面沉降
「灌溉效率悖论」是什么?为什么滴灌喷灌铺满灌区,流域反而可能更缺水?
What is the paradox of irrigation efficiency - why can spreading drip and sprinkler systems across a district leave the whole river basin even thirstier?
指田间节水并不等于流域节水。滴灌喷灌省下的主要是输水途中的渗漏与蒸发,而这些渗漏水原本会回归河道与地下水,被下游水井和取水口反复取用;设施升级后农民往往扩种增肥,作物蒸腾随之上升,「消失」的回流水不再回来,河湖与含水层的可用水量不升反降。因此节水政策不能止于补贴高效设备,还要为流域设定取水总量上限、按实际消耗量考核,否则效率提升只会刺激用水扩张。
It is the gap between saving water in the field and saving water in the basin. Drip and sprinkler systems curb seepage and evaporation during conveyance, yet those very losses used to recharge rivers and aquifers, where downstream wells and intakes pumped them back up. Upgraded schemes invite farmers to plant and fertilise more, so crop transpiration climbs while the recycled return flow vanishes, leaving less water in the channel than before. Policy therefore must go beyond subsidising efficient hardware and set basin-level caps on withdrawals, accounted by consumptive use, or efficiency gains simply fuel expansion.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Grafton RQ等论文《The paradox of irrigation efficiency》,Science 2018
Grafton RQ et al., 'The paradox of irrigation efficiency', Science, 2018
独立核验依据 · Independent verification: 核验依据 1 EUROPEPMC 标识 30139857：The paradox of irrigation efficien
#灌溉效率悖论 #回流水 #流域取水上限