Journal
WATER
Volume 14, Issue 20, Pages -Publisher
MDPI
DOI: 10.3390/w14203206
Keywords
western Jilin; land consolidation; InVEST model; ecosystem services; supply and demand; precipitation change
Categories
Funding
- FAO/GEF [GCP/CPR/048/GEF]
- National Natural Science Foundation of China [41971136, 42171107, 42001112]
- Professional Association of the Alliance of International Science Organizations [ANSO-PA-2020-14]
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This study analyzes the temporal and spatial changes of water resources supply and demand in western Jilin, highlighting the importance of maintaining the balance of water supply and demand for sustainable development. The results show the significant influence of land consolidation and precipitation changes on water production and demand in the region.
As an important ecosystem service, water supply is closely related to human well-being. Maintaining the balance of water supply and demand is essential in the sustainable development of a regional economy and society. Taking western Jilin, where the difference between water supply and demand is increasingly prominent, as the research object, from the perspective of land consolidation and precipitation changes, this paper analyzes the temporal and spatial changes of water resources supply and demand at the regional and county scales in western Jilin from 2000 to 2018 by the InVEST model and the water resource demand model. The results show that water production in western Jilin did not change significantly before and after land consolidation. The change in planting structure made water demand increase from 3.03 billion m(3) to 4.96 billion m(3), which reversed the relationship between supply and demand. The impact of precipitation changes on water production is extremely significant. The annual production of water in wet years is 8.05 billion m(3), and the annual water production in dry years is 1.08 billion m(3). The amount of precipitation can directly change the relationship between the supply and demand of local water resources. The evolution of the water resources supply and demand pattern in western Jilin is the result of the combined effect of land consolidation and precipitation changes. Precipitation mainly affects supply, while land consolidation mainly affects demand.
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