JOURNAL OF NATURAL RESOURCES ›› 2015, Vol. 30 ›› Issue (6): 963-973.doi: 10.11849/zrzyxb.2015.06.007

• Resource Evaluation • Previous Articles     Next Articles

Spatiotemporal Properties of Growing Season Indices and Their Impacts onAgricultural Production during 1961-2010 across Xinjiang

CI Hui1,2, ZHANG Qiang1,2,3, CHEN Xiao-hong1,2, JIANG Tao1,2   

  1. 1. Department of Water Resources and Environment, Sun Yat-sen University, Guangzhou 510275, China;
    2. Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong High Education Institute, Sun Yat-sen University, Guangzhou 510275, China;
    3. School of Earth Sciences and Engineering, Suzhou University, Suzhou 234000, China
  • Received:2014-06-18 Revised:2014-10-04 Online:2015-06-20 Published:2015-06-20

Abstract:

Three growing season indices, the growing season length, the starting/ending time of the growing season were defined based on the daily minimum and the daily average temperature data across Xinjiang, China. Spatiotemporal properties of the growing season indices were analyzed using Fuzzy Clustering Technique, robust regressive method and nonparametric Mann-Kendall trend test method. Besides, the implications of change of growing season indices on agricultural activities were discussed. The results indicate that there was a great change of growing season length in mid-1990s across Xinjiang. The agricultural activities in southern Xinjiang were not heavily influenced by the low temperature. However hazards were examined in the northern parts of Xinjiang. It is also found that the growing season length is in close relations with the occurrence of low temperature at the end of spring (before and after April) and in the early autumn (before and after October). The increase of the growing season length may improve the preliminary production and annual total evaporation, and it may further impact the hydrological, ecological and geochemical processes across Xinjiang. In this case, our study is of practical and theoretical merits in terms of planning and management of agricultural activities over Xinjiang, China.

Key words: growing season indices, Xinjiang, meteorological disasters, agricultural response

CLC Number: 

  • S161.2