Complex response of runoff–precipitation ratio to the rising air temperature: the source area of the Yellow River, China.
Complex response of runoff–precipitation ratio to the rising air temperature: the source area of the Yellow River, China.
复制标题
径流降水比对气温升高的复杂响应：中国黄河源区。
DOI：
10.1007/s10113-014-0617-9
复制
发表时间：
2015
影响因子：
4.2
通讯作者：
Jiongxin Xu
中科院分区：
文献类型：
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作者：
Jiongxin Xu
气候变暖对水循环和水资源的影响是科学和可持续社会经济发展的一个重要问题。唐乃海站以上流域是黄河的源头，地处青藏高原，产流量占黄河天然径流量的41.3%。因此，它被称为“黄河水塔”。利用1956~2008年的气候和水文资料，研究气候变暖对黄河流域水循环的影响，为黄河水资源可持续管理提供依据。统计分析表明，年降水量基本没有变化趋势，气温有明显的上升趋势。因此，该地区是研究水循环系统对气候变暖响应的理想区域。年径流量(QW)和径流降水比(RRP)存在非线性变化，它们先增大到一个峰值，然后减小。根据Rrpp对气温升高的响应，建立了径流产流对气温升高的复杂响应的三阶段描述模型。根据研究区域以前报道的受气温上升驱动的环境变化的证据，解释了这种复杂反应的机制。
The impact of climate warming on the water cycle and water resources is an important issue in science and for sustainable socioeconomic development. The drainage area above Tangnaihai station is the source area of the Yellow River, which is located in the Qinghai–Tibet Plateau and yields 41.3 % of the river’s total natural runoff. Thus, it is known as the “water tower of the Yellow River.” Based on climate and hydrometric data from 1956 to 2008, the purpose of this study is to deal with the influence of climate warming on the water cycle in this region and thereby to provide some knowledge for sustainable water resources management of the Yellow River. The statistical analysis shows basically no trend in annual precipitation, but a significant rising trend in air temperature. Hence, this area is ideal to study the response of the water cycle system to climate warming. We found nonlinear variations in annual runoff (Qw) and the runoff–precipitation ratio (Rrp): they increased to a peak and then decreased. According to the response ofRrpto rising temperature, we established a three-stage descriptive model for the complex response of runoff generation to the rising air temperature. The mechanism of the complex response is explained based on the evidence of environmental changes previously reported in the study area, driven by rising temperatures.