Concept information
There is no term for this concept in this language
优选词,正式主题词
定义
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A river type is a constructed ecological entity with limited internal variation in its biotic and abiotic components, which shows a minimal and constant biotic and abiotic discontinuity in comparison with other entities. Such river types might serve as 'units', for which an assessment system can be applied. A river type should always be defined on the basis of natural or near-natural reference sites.
(en)创建的: 2/21/23
上位概念
狭义概念
- 支流
- blackwater rivers (en)
- braided rivers (en)
- chalk streams (en)
- clearwater rivers (en)
- distributaries (en)
- headwaters (en)
- river meanders (en)
- whitewater rivers (en)
是...的类型
其它语言
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2024-08-12T10:42:42Z
skos:notation: 6f2739ce
阿拉伯语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2022-02-11T08:45:03
skos:notation: 6f2739ce
德语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2024-09-30T11:30:42Z
skos:notation: 6f2739ce
俄语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2022-02-18T12:49:52
skos:notation: 6f2739ce
法语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2022-10-29T12:44:18
skos:notation: 6f2739ce
捷克语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2022-05-27T13:04:14
skos:notation: 6f2739ce
罗马尼亚语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2022-02-18T12:49:51
skos:notation: 6f2739ce
书面挪威语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2024-01-23T17:33:22
skos:notation: 6f2739ce
斯瓦希里语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2022-02-22T13:06:29
skos:notation: 6f2739ce
土耳其语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2024-07-03T16:11:42Z
skos:notation: 6f2739ce
西班牙语
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void:inDataset: http://aims.fao.org/aos/agrovoc/void.ttl#Agrovoc
创建的: 2022-02-11T08:43:24
skos:notation: 6f2739ce
英语