YONG Zheng, ZHAO Chengyi, SHI Fengzhi, et al. Variation Characteristics of Groundwater Depth and Its Ecological Effect in the Main Stream of Tarim River in Recent 20 Years[J]. 2020, 34(3): 182-189.
DOI:
YONG Zheng, ZHAO Chengyi, SHI Fengzhi, et al. Variation Characteristics of Groundwater Depth and Its Ecological Effect in the Main Stream of Tarim River in Recent 20 Years[J]. 2020, 34(3): 182-189. DOI: 10.13870/j.cnki.stbcxb.2020.03.028.
Variation Characteristics of Groundwater Depth and Its Ecological Effect in the Main Stream of Tarim River in Recent 20 Years
The spatio temporal variation characteristics of groundwater depth and the inflow of river and its ecological effect were studied based on the monitoring of hydrological and ecological parameters in the main stream area of Tarim River in recent 20 years.The results showed that the annual variation of ground water depth in the upper and middle reaches of the main Tarim River was 0.42~0.92 m in the dry season from March to April
and 1.06~3.67 m in the flood season from July to September. After nearly 20 years of ecological water conveyance
the groundwater depth in the downstream section had increased by 3.75 m during 2009-2017. The depth of groundwater varied significantly with the amount of water conveyance. Generally
it reached the peak value within one month after the water conveyanced. After that
it gradually decreased until the next water conveyance. After 2009
the ecological water transport has obvious effect on the vegetation restoration of downstream
and the average value of NDVI in the downstream increased from 0.05 to 0.15. This study systematically analyzed the comprehensive response of regional ecological environment to groundwater since the ecological transport of the main stream of Tarim River
which could provide theoretical basis for regional water resource management and further quantification of water transport benefits.
Martin K, Marek S, Anton K. Null model analyses of temporal patterns of bird assemblages and their foraging guilds revealed the predominance of positive and random associations[J].Ecology and Evolution,2019,9(15):8541-8554.
Yang F, Xue L Q, Wei G H, et al. Study on the dominant causes of streamflow alteration and effects of the current water diversion in the Tarim River Basin, China[J].Hydrological Processes,2018,32(22):3391-3401.
Aishan T, Halik U, Cyffka B, et al. Monitoring the hydrological and ecological response to water diversion in the lower reaches of the Tarim River, Northwest China[J].Quaternary International,2013,311:155-162.
Thomas F M, eschke M J, ZhangX M, et al. Stand structure and productivity of populus euphratica along a gradient of groundwater distances at the Tarim River (NW China)[J].Journal of Plant Ecology,2017,10(5):753-764.