JOURNAL OF NATURAL RESOURCES ›› 2016, Vol. 31 ›› Issue (4): 570-582.doi: 10.11849/zrzyxb.20150370

• Resource Evaluation • Previous Articles     Next Articles

Effect of Progress in Artificial Irrigation and Drainage Technology on the Change of Cultivated Land Pattern in the Past 50 Years in Manasi River Watershed

LI Jian-jun1, 2, 3, LUO Ge-ping1, DING Jian-li2, XU Wen-qiang1, ZHENG Shuan-li2   

  1. 1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China;
    2. College of Resources and Environmental Sciences, Xinjiang University, Urumqi 830046, China;
    3. Xinjiang Academy of Forestry Sciences, Urumqi 830011, China
  • Received:2015-04-09 Revised:2015-09-07 Online:2016-04-28 Published:2016-04-28
  • Supported by:
    Previous Research Project (973 Program), No.2014CB460603,National Natural Science Foundation of Excellent Youth of Xinjiang, No.U1303382,National Natural Science Foundation of China, No.41271323

Abstract: The analysis of relationship between artificial irrigation and drainage technology development and cultivated land change pattern has vital significance in the research of irrigation agriculture development in arid areas. Manasi River Watershed was taken as the study area. The topographical map of Manas River Watershed in 1960, remote sensing images taken in 1976, 1989, 1997, 2006 and 2013, historical maps of water conservancy, and other original data were processed by remote sensing image possessing and spatial analysis in geographic information system, and the artificial irrigation and drainage canal system at five stages and land use classification in six periods were obstained. Then the length index of artificial irrigation canal system and the indices describing cultivated land pattern, i.e. oasis reclamation rate, net cultivated land coefficient, perimeter-area rate, were calculated. Finally, stepwise regression method was used to explore the effects of artificial irrigation and drainage technology on the change of cultivated land pattern. The results showed that: before the application of drip irrigation, the distribution pattern of cultivated lands in Manasi River Watershed was determined by the spatial distribution of irrigation and drainage canal system, especially the distribution pattern and the length of sublateral canals, the regression equation being y=0.43x+7.38 (R2=0.90, n=33, P=0). After the application of drip irrigation, the change pattern of cultivated lands was determined by the distribution of pipe networks of drip irrigation, especially the distribution pattern and length of main pipe and branch pipes, resulting in the increase of water use efficiency from 0.38 (1960s) growth to 0.65 (2010) in the watershed.

Key words: artificial irrigation and drainage technology, cultivated land pattern change, Manasi River Watershed, stepwise regression analysis

CLC Number: 

  • F301.2