Spatial and Temporal Evolution of Desertification and Its Driving Factors of Climate in Hebei Province
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P931.3;TP751

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    Abstract:

    [Objective] The desertification in Hebei Province was monitored by remote sensing and its driving factors was analyzed, in order to provide reliable theoretical basis and data support for desertification control. [Methods] Based on MODIS13 A3-NDVI and meteorological data from 2000 to 2017, taking the desertification index as the evaluation index, the temporal and spatial evolution of land desertification in Hebei Province and its driving factors were analyzed by trend analysis, future change analysis, and climate factors analysis. [Results] ① In 2000—2017, the desertification of study area decreased, with a decreasing rate of 0.009/18 a, of which the proportion of extremely significant decrease (p<0.01) was 11.13% and significant decrease (p<0.05) was 8.86%. ② The proportions of persistent and anti-persistent desertification in future in the study area were expected to be 41.29% and 58.71% respectively, of which, the weak persistence and weak anti-persistence was expected to be 37.43% and 51.35%, respectively. On the existing basis, the trend change in the future was basically unchanged, and the proportions of persistent and anti-persistent characteristics were 14.89% and 19.6% respectively. ③ The partial correlation coefficient of desertification index with precipitation and temperature in growing season was small and insignificant. [Conclusion] The overall desertification situation is improved during 2000—2017, but with obvious spatial heterogeneity. The desertification areas are mainly concentrated in the Bashang Plateau area and the Hurst index indicates that desertification might be reversed in local areas in the future. In terms of climate factors, the increase of temperature and the decrease of precipitation can promote desertification in the study area.

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赵文博,冯莉莉,赵安周,张兆江,高叶鹏.河北省2000-2017年荒漠化的时空演变及其气候驱动因子[J].水土保持通报英文版,2021,41(4):252-259

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History
  • Received:April 15,2021
  • Revised:May 14,2021
  • Adopted:
  • Online: August 31,2021
  • Published: