Recognition of the Interaction Mechanisms between Water and Land Resources Based on an Improved Distributed Hydrological Model
Jianwei Wang,
Xizhi Lv,
Tianling Qin,
Yongxin Ni,
Li Ma,
Qiufen Zhang,
Hanjiang Nie,
Zhenyu Lv,
Chenhao Li,
Xin Zhang,
Jianming Feng
Affiliations
Jianwei Wang
Yellow River Institute of Hydraulic Research, Henan Key Laboratory of Yellow Basin Ecological Protection and Restoration, Zhengzhou 450003, China
Xizhi Lv
Yellow River Institute of Hydraulic Research, Henan Key Laboratory of Yellow Basin Ecological Protection and Restoration, Zhengzhou 450003, China
Tianling Qin
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
Yongxin Ni
Yellow River Institute of Hydraulic Research, Henan Key Laboratory of Yellow Basin Ecological Protection and Restoration, Zhengzhou 450003, China
Li Ma
Yellow River Institute of Hydraulic Research, Henan Key Laboratory of Yellow Basin Ecological Protection and Restoration, Zhengzhou 450003, China
Qiufen Zhang
Yellow River Institute of Hydraulic Research, Henan Key Laboratory of Yellow Basin Ecological Protection and Restoration, Zhengzhou 450003, China
Hanjiang Nie
Key Laboratory for Geographical Process Analysis & Simulation of Hubei Province, Wuhan 430079, China
Zhenyu Lv
China Three Gorges Corporation, Wuhan 430010, China
Chenhao Li
Beijing Laboratory of Water Resources Security, Capital Normal University, Beijing 100048, China
Xin Zhang
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
Jianming Feng
School of Water Conservancy and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
Conflicts between humans and land use in the process of using water and conflicts between humans and water resources in the process of using land have led to an imbalance between natural ecosystems and socio-economic systems. It is difficult to understand the impact of the processes of water production and consumption on land patches and their ecological effects. A grid-type, basin-distributed hydrological model was established in this study, which was based on land-use units and coupled with groundwater modules to simulate the water production and consumption processes in different units. By combining land use and net primary productivity, the runoff coefficient and the water use efficiency (NPP/ET) of different land units were used as indicators to characterize the interaction between water and land resources. The results showed that the average runoff coefficients of cultivated land, forest land and grassland were 0.7, 0.5 and 0.9, respectively. Moreover, the average runoff coefficients of hills, plains and basins were 0.7, 0.7 and 0.8, respectively. The NPP produced by the average unit, evapotranspiration, in cultivated land, forest land and grassland was 7 (gC/(m2•a))/mm, 0.7 (gC/(m2•a))/mm and 0.2 (gC/(m2•a))/mm, respectively. These results provide quantitative scientific and technological support in favor of the comprehensive ecological management of river basins.
