scholarly journals Risk control of groundwater exploitation for Zhangye basin in the middle reaches of Heihe River basin, China

2015 ◽  
Vol 368 ◽  
pp. 350-355
Author(s):  
X. Guosheng ◽  
Q. Ju ◽  
W. Shuixian ◽  
L. Qin ◽  
L. Fen ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
River Basin ◽  
Water Table ◽  
Risk Evaluation ◽  
Risk Control ◽  
Heihe River Basin ◽  
Heihe River ◽  
Groundwater Exploitation ◽  
Zhangye Basin ◽  
Water Amount

Abstract. Regulation of the water table is a feasible and effective way to reduce the risk of groundwater exploitation. An index system of groundwater exploitation risk evaluation is developed. The groundwater numerical simulation model is established for Zhangye basin in the middle reaches of Heihe River basin, China. Based on the identification and validation, the model is used for numerical simulation and forecast of groundwater exploitation under the conditions of current and planned development. The results show that the increase of groundwater exploitation amount causes the falling of water table. The increase of groundwater exploitation is 7600 × 104 m3, which can displace the surface water amount of 10 100 × 104 m3. The annual river runoff can increase 7536 × 104 m3. It is beneficial to the let-down flow from Zhengyi Gorge cross-section, and also provides the basis for decision on risk control of groundwater exploitation.

scholarly journals Eco-hydrological effects of stream-aquifer water interaction: A case study of the Heihe River Basin, northwestern China

2016 ◽  
Author(s):  
Yujin Zeng ◽  
Zhenghui Xie ◽  
Yan Yu ◽  
Shuang Liu ◽  
Linying Wang ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Water Level ◽  
River Water ◽  
River Basin ◽  
Water Table ◽  
Riparian Vegetation ◽  
Stream Water ◽  
Growing Season ◽  
Heihe River Basin ◽  
Heihe River

Abstract. A scheme describing the process of stream-aquifer interaction was incorporated into the land model CLM4.5 to investigate the effects of stream water conveyance over riparian banks on ecological and hydrological processes. Two groups of simulations for five typical river cross-sections in the middle reaches of the arid zone Heihe River Basin were conducted. The simulated riparian ground water table at a propagation distance of less than 1 km followed the intra-annual flu ctuation of the river water level, and the correlation was excellent (R2 = 0.9) between the river water level and the groundwater table at the distance 60 m from the river. The correlation rapidly decreased as distance increased. In response to the variability of the water table, soil moisture at deep layers also followed the variation of river water level all year, while soil moisture at the surface layer was more sensitive to the river water level in the drought season than in the wet season. With increased soil moisture, the average gross primary productivity and respiration of riparian vegetation within 300 m from the river at a typical section of the river increased by approximately 0.03 mg C m−2 s−1 and 0.02 mg C m −2 s−1, respectively, in the growing season. Consequently, the net ecosystem exchange increased by approximately 0.01 mg C m−2 s−1, and the evapotranspiration increased by approximately 3 mm d−1. Furthermore, the length of the growing season of riparian vegetation also increased by 2–3 months due to the sustaining water recharge from the river.

Relationship Analysis between the Response to Participate in Eco-Compensation and Livelihood Assets: A HeiHe River Basin Example

2010 ◽  
Vol 113-116 ◽  
pp. 317-321 ◽  
Author(s):  
Fang Su ◽  
Hai Yang Shang
Keyword(s):  
River Basin ◽  
Local Governments ◽  
Natural Capital ◽  
Physical Capital ◽  
Heihe River Basin ◽  
Heihe River ◽  
Ecological Compensation ◽  
Relationship Analysis ◽  
Livelihood Assets ◽  
Physical Assets

For a long time, these are deeply entrenched in people’s thinking and the institutions or policies of economic activities that the resources are unlimited and the environment exists priceless. Environmentally augmented household livelihood assets were collected from 300 sample households within the HeiHe River Basin. Results show that physical assets possess a maximum value (0.609) and natural assets possess relatively low values (0.241). The human capital, natural capital, physical capital, financial capital and social capital are all important factors to influence the responses. An increment of one unit should reduce the occurrence to participate in ecological compensation for natural capital. Therefore, the local governments should actively introduce the relevant supporting measures in order to provide more non-agricultural employment opportunities for farmers.

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