Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (31): 9-13.doi: 10.11924/j.issn.1000-6850.2014-0713

Special Issue: 农业地理

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The Temporal and Spatial Variation Analysis of Soil Moisture of Interdune Lowland in Inland Sandy Areas

  

  • Received:2014-03-17 Revised:2014-03-17 Accepted:2014-09-30 Online:2014-11-20 Published:2014-11-20

Abstract: Soil moisture is the most important factor for the survival and growth of desert psammophytes. Under different types of terrain, spatial distribution of soil moisture has significant differences. Using smart neutron moisture meter timing measurement of soil moisture, different terrain 0-200 cm deep soil moisture of 10 levels of spatial and temporal variation characteristics were measured and analyzed in southeast edge of Badain Jaran desert. The results showed that: soil moisture spatial distribution of the southeastern margin of the Badain Jaran desert had a certain regularity: lower interdune lowland>middle interdune lowland>upper interdunal lowland>the upper, middle and lower of dunes. And the annual variability of sand dune was overall in a steady state; soil moisture of interdune lowland changed than other terrain. In spring, soil moisture was not very rich, soil moisture had little fluctuations; In summer, plant growth were limited by transpiration and rainfall, there was significant differences of temporal and spatial variation of soil moisture, soil moisture above 20 cm increased and 40-180 cm were the active layer of the performance of moisture of change; moisture content increased in the overall fall. The southeast edge of the Badain Jaran desert soil moisture temporal and spatial variation in topography study provided a scientific basis for the massive desert ecological balance governance, ecosystem artificial restoration and sandy areas of sustainable development.