Nilsson Christer, Reidy Catherine A, Dynesius Mats, Revenga Carmen
Landscape Ecology Group, Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden.
Science. 2005 Apr 15;308(5720):405-8. doi: 10.1126/science.1107887.
A global overview of dam-based impacts on large river systems shows that over half (172 out of 292) are affected by dams, including the eight most biogeographically diverse. Dam-impacted catchments experience higher irrigation pressure and about 25 times more economic activity per unit of water than do unaffected catchments. In view of projected changes in climate and water resource use, these findings can be used to identify ecological risks associated with further impacts on large river systems.
基于大坝对大型河流系统影响的全球概述表明，超过一半（292个中的172个）受到大坝影响，包括生物地理多样性最高的八个地区。受大坝影响的集水区面临更高的灌溉压力，每单位水量的经济活动比未受影响的集水区多约25倍。鉴于气候变化和水资源利用的预测变化，这些发现可用于识别与大型河流系统进一步影响相关的生态风险。
