摘要
根据发育于俄罗斯（极地）、中国及南亚地区的２０多条亚洲主要河流的比较研究，发现亚洲入海河流的化学通最存在明显的规律性。根据离子径流量、离子浓度及离子侵蚀模数可将亚洲的入海河流分为三个区，它们各具有不同的化学通量。中国的主要入海河流具有截然不同的化学通量特点，在亚洲占据重要的地位，尤其是流经黄土高原的几条河流具有特征的化学通量。气候、植被、土壤及地层岩性、化学风化、构造活动等因子基本控制了亚洲的入海河流的化学通量，而在不同分区中的主导因子不同。
Chemical fluxes of Asian rivers into the ocean bear different regional laws. Three subareas are characteristic of distinct dissolved sediment loads, ionic densities and dissloved sediment yields. Chinese rivers emptying into the ocean play a great role in Asia and have different chemical fluxes, among which those passing through the Loess Plateau have high ionic densities, low water discharge, dissolved sediment loads and yields. Climate, vegetation, soil and strata lithology, chemical weathering intensity and tectonic activity primarily decide the chemical fluxes of Asian rivers into the ocean, and different factors has different effect on the chemical fluxes of separate regional rivers. Rise of the Qinghai-Tibet Plateau also exerts an important influence on the matter composition of rivers rising in it.
出处
《海洋通报》
CAS
CSCD
北大核心
2000年第4期22-28,共7页
Marine Science Bulletin
关键词
化学通量
亚洲入海河流
控制因素
chemical flux
Asian rivers emptying into the ocean
controlling factors
