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首页> 外文期刊>Journal of integrative Environmental Sciences >Past and future trends in nutrient export by 19 rivers to the coastal waters of Indonesia
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Past and future trends in nutrient export by 19 rivers to the coastal waters of Indonesia

机译：19条河流向印度尼西亚沿海水域的养分出口的过去和未来趋势

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摘要

This article analyzes past and future trends in nutrient export of dissolved and particulate nitrogen and phosphorus by rivers into the coastal waters of Indonesia. The focus is on 19 rivers included in the Global Nutrients Export from Watersheds model. In the past, export of dissolved inorganic nitrogen by rivers doubled, while export of other forms of nitrogen and phosphorus by rivers did not change largely. For future trends of four Millennium Ecosystem Assessment scenarios, the largest increases are calculated for river export of dissolved inorganic phosphorus by rivers caused by increased inputs from sewage systems. The export of other nutrient forms is relatively constant in time, which is surprising, given the growing population and the associated increasing inputs of nitrogen and phosphorus to the land. Changes in export by rivers are the net effect of human activities and changes in hydrology. The results indicate that future increases in nitrogen and phosphorus inputs on land are partly counterbalanced by decreases in basin discharge as a result of climate change and consumptive water use. These results differ from other Asian regions, for which large increases in nitrogen and phosphorus inputs to coastal waters are calculated. This can be explained by population growth, gross domestic product increase, and sewage system development.
机译：本文分析了河流向印度尼西亚沿海水域中溶解态氮和颗粒态氮，磷的养分出口的过去和未来趋势。重点关注“全球营养物从流域出口”模型中包含的19条河流。过去，河流中溶解的无机氮的出口增加了一倍，而河流中其他形式的氮和磷的出口变化不大。对于四种千年生态系统评估方案的未来趋势，计算得出的最大增幅是由于污水系统投入增加而造成的河流中溶解无机磷的河流出口。其他养分形式的出口在时间上相对恒定，这令人惊讶，因为人口不断增长，与此相关的氮和磷对土地的输入也不断增加。河流出口的变化是人类活动和水文学变化的净结果。结果表明，由于气候变化和耗水量的增加，流域土地流量的减少部分抵消了未来土地上氮和磷输入的增加。这些结果与其他亚洲地区不同，亚洲其他地区的沿海水域氮和磷输入量大大增加。这可以用人口增长，国内生产总值增长和污水处理系统发展来解释。

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