赵奕，南卓铜*，李祥飞，徐毅，张凌. 分布式水文模型DHSVM在西北高寒山区流域的适用性研究. 冰川冻土. 2019, 41(1): 147-157.
分布式水文－土壤－植被模型（Distributed Hydrology Soil Vegetation Model, DHSVM）是基于栅格离散的分布式水文模型，对地表水热循环的各个过程能进行很精细地刻画，被广泛应用于世界各地很多类型的流域的高时空分辨率的水文模拟，然而它在高寒山区的适用性并不清楚。基于300ｍ数字高程模型，应用DHSVM 模型对典型的高寒山区流域八宝河流域2001-2009年的水文过程展开模拟，并采用流域出口祁连站的水文实测数据对模型进行了精度评价。参数敏感性分析表明，土壤横向导水率、田间持水量和植被反照率等是该区域主要的敏感性参数。模型默认参数会高估高寒山区流域的潜在蒸散发量，导致夏季径流量远小于观测值。通过参数率定，模型校准期（2001-2004）的模拟日径流和月径流Nash 效率系数分别达到0.72 和0.87；而模型验证期（2005-2009）分别为0.60 和0.74 。结果表明，DHSVM 模型基本具备了模拟高寒山区流域降水－径流过程的能力。然而，由于DHSVM 模型缺少对高寒山区流域土壤的冻融过程的刻画，春季径流的模拟精度明显受到影响，需要在将来重点改进。
下载 （pdf, ~1.86 MB):
Cao Y, Nan Z, Cheng G, Zhang L. Hydrological variability in the arid lands of northwest China during 2002-2013. Advances in Meteorology. 2018, 2018(1502472): 1-13. DOI:10.1155/2018/1502472.
The arid region of Northwest China (ANC) has a distinct and fragile inland water cycle. This study examined the hydrological variations in ANC and its three subregions from August 2002 to December 2013 by integrating terrestrial water storage (TWS) anomaly data derived from the Gravity Recovery and Climate Experiment (GRACE) satellite, soil moisture data modeled by the Global Land Data Assimilation System, and passive microwave snow water equivalent data. The results show that the TWS in ANC increased at a rate of 1.7mm/a over the past decade, which consisted of an increasing trend of precipitation (0.12mm/a). Spatially, in the northern ANC, TWS exhibited a significant decreasing trend of −3.64 mm/a ( < 0.05) as a result of reduced rainfall, increased glacial meltwater draining away from the mountains, and intensified human activities. The TWS in southern and eastern ANC increased at a rate of 2.14 ( = 0.10) and 1.63 ( < 0.01)mm/a, respectively. In addition to increasing precipitation and temperature, decreasing potential evapotranspiration in Southern Xinjiang and expanding human activities in Hexi-Alashan together led to an overall increase in TWS. Increased glacier meltwater and permafrost degradation in response to climate warming may also affect the regional TWS balance. The variations in soil moisture, groundwater, and surface water accounted for the majority of the TWS anomalies in southern and easternANC.The proposed remote sensing approach combiningmultiple data sources proved applicable and useful to understand the spatiotemporal characteristics of hydrological variability in a large area of arid land without the need for field observations.
Links: Baidu, Official,
“We give our permission to use this material freely for teaching provided that the following citation is included: “Time Series Modelling of Water Resources and Environmental Systems” by Keith W. Hipel and A. Ian McLeod.”
（我们许可免费使用本书用于教学目的，只要将下述引用包括进来：“Time Series Modelling of Water Resources and Environmental Systems” by Keith W. Hipel and A. Ian McLeod.”）
Hipel K W, Mcleod A I. Time Series Modelling of Water Resources and Environmental Systems. Amsterdam, The Netherlands: Elesevier, 1994, 1013.
Links: Link1 (Baidu, ~63MB)
Zhang L, Nan Z*, Liang X*, Xu Y, Hernandez F, Li L. Application of the MacCormack Scheme to Overland Flow Routing for High-spatial Resolution Distributed Hydrological Model. Journal of Hydrology. 2018, 558: 421-431.
Although process-based distributed hydrological models (PDHMs) are evolving rapidly over the last few decades, their extensive applications are still challenged by the computational expenses. This study attempted, for the first time, to apply the numerically efficient MacCormack algorithm to overland flow routing in a representative high-spatial resolution PDHM, i.e., distributed hydrology-soil-vegetation model (DHSVM), in order to improve its computational efficiency. The analytical verification indicates that both the semi and full versions of the MacCormack schemes exhibit robust numerical stability and are more computationally efficient than the conventional explicit linear scheme. The full-version outperforms the semi-version in terms of simulation accuracy when a same time step is adopted. The semi-MacCormack scheme was implemented into DHSVM (version 3.1.2) to solve the kinematic wave equations for overland flow routing. The performance and practicality of the enhanced DHSVM-MacCormack model were assessed by performing two groups of modeling experiments in the Mercer Creek watershed, a small urban catchment near Bellevue, Washington. The experiments show that DHSVM-MacCormack can considerably improve the computational efficiency without compromising the simulation accuracy of the original DHSVM model. More specifically, with the same computational environment and model settings, the computational time required by DHSVM-MacCormack can be reduced to several dozen minutes for a simulation period of three months (in contrast with one day and a half by the original DHSVM model) without noticeable sacrifice of the accuracy. The MacCormack scheme proves to be applicable to overland flow routing in DHSVM, which implies that it can be coupled into other PHDMs for watershed routing to either significantly improve their computational efficiency or to make the kinematic wave routing for high resolution modeling computational feasible.
Keywords: MacCormack Scheme; Overland Flow Routing; DHSVM; Kinematic Wave; Computational Efficiency
Links: Link1 (Elesvier, 50day’s free access since Feb 4, 2018) ; Baidu;
Zhang L, Nan Z*, Yu W, Zhao Y, Xu Y. Comparison of baseline period choices for separating climate and land use/land cover change impacts on watershed hydrology using distributed hydrological models. Science of the Total Environment. 2018, 622-623: 1016-1028.
Article in PDF
强德霞，赵彦博，南卓铜*，吴小波. 基于参数实时优化的洪水预报系统研究：以黑河干流洪水为例. 水利水电技术. 2017, 48(4): 13-17.
Full text available upon request.