[1]SUN Qi,XU Changchun,LUO Yingxue,et al.Spatiotemporal Variation of WUE of Different Land Use Types and Its Response to Climate Factors in Xinjiang[J].Research of Soil and Water Conservation,2020,27(05):237-243.
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Spatiotemporal Variation of WUE of Different Land Use Types and Its Response to Climate Factors in Xinjiang
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
237-243
Column:
目次
Public date:
2020-08-20
- Title:
- Spatiotemporal Variation of WUE of Different Land Use Types and Its Response to Climate Factors in Xinjiang
- Keywords:
- land use types; WUE; climatic factors; Xinjiang
- CLC:
- Q948
- DOI:
- -
- Abstract:
- Water use efficiency(WUE)is an important index to measure the water consumption capacity of vegetation. In this paper, the spatial-temporal change characteristics of vegetation WUE and its response to climate factors under different land use types in the period 2001—2014 were studied by using MODIS products and combining with land use types and meteorological data. The results show that:(1)in terms of space, compared with other land use types, the annual WUE of cultivated land was more than 1.2 gC/(m2·mm), while the annual WUE of unused land was basically between 0.6～1.2 gC/(m2·mm), which concentrated in Jungar Basin;(2)from 2001 to 2014, WUE of various land use types in Xinjiang showed an overall increasing trend, among which WUE of swamp increased significantly;(3)WUE of grassland and unused land in Xinjiang showed a ‘single peak' distribution pattern with increasing first and then decreasing, while WUE of swamp and cultivated land showed a ‘double peak' distribution pattern in the year, WUE of woodland changed little from May to September;(4)as a whole, the area with significant negative correlation between WUE and precipitation, average wind speed and average humidity was significantly larger than the area with significant positive correlation, while the sunshine hours are opposite to these relations; except the unused land, the area with significant positive correlation between WUE and air temperature was significantly larger than the area with significant negative correlation.
- References:
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Last Update:
2020-08-25