“theory of geomorphic thresholds”的概念、定义、翻译、参考文献-科学参考

单词	theory of geomorphic thresholds
释义	theory of geomorphic thresholds Encyclopedia 理学地貌临界释 theory of geomorphic thresholds地貌临界说 1973年，美国S.A.舒姆（Stanly Alfred Schumrn）首次提出的一种地貌发育理论。一种关于在外部控制如气候、海平面及土地利用条件不变的情况下，地貌系统演变过程中，内部因素的自身触发（内临界），或外部控制因素的变化激发（外临界），突然超越临界或状态的学说。
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