A kingfisher hunts a few inches about a bed of yellow water lilies in the Dorset Stour, a chalk stream that flows through Dorset and Wiltshire in southern England.
2024-04-23 词
These streams take their quality from the rock over which they run: alkaline, mineral rich, with dissolved calcium carbonate but almost no sediment, flowing to the sea over many miles of clean flint-gravel bed. Bubbling up from springs that emerge from deep aquifers in the chalk, they run through valleys fringed with water mint and clusters of water forget-me-nots, often thick with life-sheltering weeds. Not subject to the surges of rivers that run over harder rocks, they flow steadily through the English chalk country, whose gentle landforms billow across the nation’s southern and eastern reaches.
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