ANALYSIS OF MINIMUM ECOLOGICAL WATER LEVEL AND WATER SURPLUS IN XIAOHU LAKE DISTRICT IN BOSTEN LAKE

LING Yu-nan; LIU Ying; PENG Jia-bin; ZHONG Rui-sen; HUANG Yue; LIU Tie; CHENG Yong; ZHANG Yong; JIANG Li-xin; YU Mei-yan

doi:10.13205/j.hjgc.202010005

Volume 38 Issue 10

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(10): 26-32,60

LING Yu-nan, LIU Ying, PENG Jia-bin, ZHONG Rui-sen, HUANG Yue, LIU Tie, CHENG Yong, ZHANG Yong, JIANG Li-xin, YU Mei-yan. ANALYSIS OF MINIMUM ECOLOGICAL WATER LEVEL AND WATER SURPLUS IN XIAOHU LAKE DISTRICT IN BOSTEN LAKE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 26-32,60. doi: 10.13205/j.hjgc.202010005

Citation:

LING Yu-nan, LIU Ying, PENG Jia-bin, ZHONG Rui-sen, HUANG Yue, LIU Tie, CHENG Yong, ZHANG Yong, JIANG Li-xin, YU Mei-yan. ANALYSIS OF MINIMUM ECOLOGICAL WATER LEVEL AND WATER SURPLUS IN XIAOHU LAKE DISTRICT IN BOSTEN LAKE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 26-32,60. doi: 10.13205/j.hjgc.202010005

Citation:

LING Yu-nan, LIU Ying, PENG Jia-bin, ZHONG Rui-sen, HUANG Yue, LIU Tie, CHENG Yong, ZHANG Yong, JIANG Li-xin, YU Mei-yan. ANALYSIS OF MINIMUM ECOLOGICAL WATER LEVEL AND WATER SURPLUS IN XIAOHU LAKE DISTRICT IN BOSTEN LAKE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 26-32,60. doi: 10.13205/j.hjgc.202010005

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ANALYSIS OF MINIMUM ECOLOGICAL WATER LEVEL AND WATER SURPLUS IN XIAOHU LAKE DISTRICT IN BOSTEN LAKE

doi: 10.13205/j.hjgc.202010005

1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Science, Urumqi 830011, China;
2. University of Chinese Academy of Science, Beijing 100049, China;
3. Bayingol Administration, Xinjiang Tarim River Basin Management Bureau, Korla 841000, China;
4. Hotan Administration, Xinjiang Tarim River Basin Management Bureau, Hotan 848000, China;
5. Bosten Lake Management Office, Bayingol Administration, Xinjiang Tarim River Basin Management Bureau, Bayingol 841400, China;
6. Liaoning Water Conservancy and Hydropower Survey and Design Research Institute Co., Ltd, Shenyang 110000, China

Received Date: 2020-05-21

Abstract

Abstract

In recent years, ecological problems occurred due to the large fluctuations in the water level of Xiaohu Lake distinct in Bosten Lake. Therefore, analysis of water deficit relying on the lowest ecological water level, has a positive significance for the water regulation and ecological protection for Xiaohu Lake. Based on the measured Xiaohu Lake water level data in Dawuti sluice from 1991 to 2019, this study combined with the DEM data and remote sensing inversion NDVI data of the lake basin, using the annual guarantee rate setting method, lake morphology analytic approach and curve correlation method, to calculate the minimum water level in Xiaohu Lake. Relying on the ecological water level data, combined with hydrological, meteorological and agricultural activities, and water regulation data in the lake area, the main driving factors for water scarcity in Xiaohu Lake were analyzed using principal component analysis. The results showed that the minimum ecological water level of Bosten Lake was 1047.18 m, and the average satisfaction rate for many years was 31.03%. In year 1991—1997, 2005—2015, 2017, ecological water shortage occurred in the Bosten Xiaohu Lake District, with an average water shortage of 0.69×10⁸ m³. The amount of upstream water was the main factor for the ecological water demand of Xiaohu Lake District, followed by agricultural activities, water regulation activities of Baolangsumu and the impact of climate change was relatively slighter. Before 2000, the ecological water shortage was mainly due to the regulation of the water level in the lake area; after 2000, agricultural water withdrawal in the irrigation area became the main cause of ecological water shortage. Scientific evidences could be provided by the research for the regulation of the water volume of Xiaohu Lake District of Bosten Lake and the restoration and protection of the wetland ecosystem.
- lowest ecological water level,
- ecological water scarcity,
- Bosten Lake,
- Xiaohu Lake District,
- principal components analysis

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