Intra-annual Distribution of Streamflow and Individual Impacts of Climate Change and Human Activities in the Dongijang River Basin, China
Intra-annual Distribution of Streamflow and Individual Impacts of Climate Change and Human Activities in the Dongijang River Basin, China
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中国东江流域径流年内分布及气候变化和人类活动的个体影响
DOI：
10.1007/s11269-015-0963-5
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发表时间：
2015-03
影响因子：
4.3
通讯作者：
Zhao, Yong
中科院分区：
文献类型：
--
作者：
Chen, Xiaohong;Chen, Lu;Zhang, Qiang;Zhao, Yong
定量地划分了气候变化、土地利用/覆盖变化、水库调度和水资源利用对中国南部东江流域径流年内分布的影响。分析中使用了降雨量、径流、水库调度和用水等数据。评价了径流年内分布的集中度和不均匀系数随时间尺度从日到月的变化。应用趋势分析和变点分析确定径流年内分布特征。通过比较区域降水量、自然径流和观测径流的差异，量化了主要影响因子对径流年内分布的贡献。结果表明，非均匀系数随时间呈负对数线性函数减小。1973年出现的聚集度和不均匀系数变化点呈明显下降趋势。在变点之后的一段时间内，前者和后者分别减少了约15%-34%和29%-40%。集中度和非均匀系数的降低是由于水库和土地利用/覆被变化的调节，而增加则是水资源利用和气候变化的结果。水库调度、土地利用/覆盖变化、水利用和气候变化对径流年内分配的影响的个体贡献约为−33.5%、−9.0%、4.5%和1.0%。据观察，新丰江、枫树坝和白盆珠水库整治对水库的影响分别占−21、−10和−2的5%。近30年来，土地利用/覆被变化和水资源利用的影响呈增加趋势。
Individual impacts of climate change, land use/coverage change, the regulation of water reservoir and water use to intra-annual distribution of streamflow of the Dongjiang River basin, South China, are quantitatively separated. Data on precipitation, streamflow, regulation of water reservoirs, and water use are used in the analysis. Changes in the concentration degree and non-uniformity coefficient of intra-annual distribution of streamflow over time scales from daily to monthly are evaluated. Trend and change point analyses are applied to determine characteristics of intra-annual distribution of streamflow. By comparison with the difference among region precipitation, naturalized streamflow and observed streamflow, the contribution of main impact factors to the intra-annual distribution of streamflow are quantified. Results demonstrate the non-uniformity coefficient decreases with a negative logarithmic linear function of the time scale. Change points of the concentration degree and non-uniformity coefficient occurred in 1973 exhibited a significant downward trend. In the period posterior to the change point the former and the latter decrease approximately by 15–34 % and by 29–40 %, respectively. The decrease in concentration degree and non-uniformity coefficient is due to the regulation of water reservoirs and land use/cover change; while the increase is the result of water use and climate change. The individual contributions to the impact on the intra-annual distribution of streamflow from regulation of water reservoirs, land use/cover change, water use, and climate change are approximately −33.5, −9.0, 4.5 and 1.0 %. It is observed that the impacts of the regulations of the Xinfengjiang, Fengshuba, and Baipenzhu reservoirs account for −21, −10, and −2 %, respectively. There is an increasing tendency in the impacts of land use/cover change and water use in the past 30 years.
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影响因子：
6.4
作者：
L. Siriwardena;B. Finlayson;T. McMahon
通讯作者：
L. Siriwardena;B. Finlayson;T. McMahon
影响因子：
5.4
作者：
Gangsheng Wang;J. Xia;Ji Chen
通讯作者：
Gangsheng Wang;J. Xia;Ji Chen
影响因子：
4.2
作者：
Y. Chen;Tao Yang;Chong-yu Xu;Qiang Zhang;Xi Chen;Z. Hao
通讯作者：
Y. Chen;Tao Yang;Chong-yu Xu;Qiang Zhang;Xi Chen;Z. Hao
DOI：
10.1002/joc.2023
发表时间：
2010-11
期刊：
International Journal of Climatology
影响因子：
--
作者：
Jiahu Wang;Yang Hong;J. Gourley;P. Adhikari;Li Li-Li;F. Su
通讯作者：
Jiahu Wang;Yang Hong;J. Gourley;P. Adhikari;Li Li-Li;F. Su
影响因子：
3.2
作者：
S. McLelland;A. Nicholas
通讯作者：
S. McLelland;A. Nicholas