Evaluation on Ecological water requirement in the Lower Reaches of Tarim River based on groundwater restoration

Yuan, 白元 Bai; Hailiang, 徐海量 Xu; Qingqing, 张青青 Zhang; Mao, 叶茂 Ye

doi:10.5846/stxb201305070960

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…The sampling site for this study is situated in the Yingsu section of the lower Tarim River. The study area experiences an arid climate with high evaporation rates, and the average annual precipitation ranges from 17-42 mm, characteristic of a typical warm temperate desert arid zone [21]. The main tree and shrub species include Populus euphratica and multi-branched tamarisk (Tamarix ramosissima Ledeb), while herbaceous plants include reed (Phragmites australias Trin) and camel thorn (Alhagi spaysifolia Shap) [22].…”

Section: Study Areamentioning

confidence: 99%

Anatomical Characteristics of the Xylem of Populus euphratica at Different Groundwater Burial Depths in the Lower Tarim River (China) and Its Response to Temperature Extremes

Che,

Ye,

et al. 2024

Forests

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The anatomical characteristics of xylem and their relationship with temperature during the year can be studied at the cellular scale by using micro-coring technology and the wood anatomy method. In this study, we used Populus euphratica Oliv. trees with different groundwater burial depths in the lower Tarim River as the research subjects. Micro-core samples of Populus euphratica were collected near two sampling sites, TY1 and TY2, which have different groundwater burial depths. We analyzed the differences in xylem anatomical characteristics and their relationship with extreme temperatures under these varying groundwater conditions using wood anatomy methods. The results showed that the anatomical parameters at TY1, with a higher groundwater table, were greater than those at TY2, which had a lower groundwater table. Specifically, the conduit density, total conduit area, average conduit area and maximum conduit area of Populus euphratica xylem were significantly and positively correlated with both maximum and minimum temperatures. The principal components of xylem parameters at TY1, with the higher water table, were significantly and positively correlated with both maximum and minimum air temperatures. In contrast, the principal components of xylem parameters at TY2, with the lower water table, were not significantly correlated with either maximum or minimum air temperatures. The sensitivity analysis indicated that the sensitive maximum air temperature for the principal component parameter index change of Populus euphratica xylem was 34.1 °C, and the sensitive minimum air temperature was 16.1 °C. Therefore, different moisture conditions affected the sensitivity of xylem parameter growth to temperature, with the temperature threshold for Populus euphratica xylem growth being between 16.1 °C and 34.1 °C.

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Section: Study Areamentioning

confidence: 99%

Anatomical Characteristics of the Xylem of Populus euphratica at Different Groundwater Burial Depths in the Lower Tarim River (China) and Its Response to Temperature Extremes

Che,

Ye,

et al. 2024

Forests

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“…Variations in vegetation and wetland areas are influenced by multiple factors, including climate, the amount of water delivered, the number of water conveyance days, the time of water conveyance carried out, the average rate of water conveyance, and human factors (Lu and Jiang, 2009;Bai et al, 2015;Xu et al, 2015;Ling et al, 2019;Wang et al, 2020). Our study indicated that the main source of groundwater recharge in the lower reaches of the Tarim River is river runoff in both vertical and horizontal directions, and the amplitude of groundwater level fluctuations gradually slows down with increasing distance both vertically and horizontally (Wu and Cai, 2004;Yu et al, 2012;Li et al, 2017).…”

Section: Lucc Responses To Ecological Water Conveyancementioning

confidence: 99%

Land use/land cover change responses to ecological water conveyance in the lower reaches of Tarim River, China

et al. 2021

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The Tarim River is the longest inland river in China and is considered as an important river to protect the oasis economy and environment of the Tarim Basin. However, excessive exploitation and over-utilization of natural resources, particularly water resources, have triggered a series of ecological and environmental problems, such as the reduction in the volume of water in the main river, deterioration of water quality, drying up of downstream rivers, degradation of vegetation, and land desertification. In this study, the land use/land cover change (LUCC) responses to ecological water conveyance in the lower reaches of the Tarim River were investigated using ENVI (Environment for Visualizing Images) and GIS (Geographic Information System) data analysis software for the period of 1990-2018. Multi-temporal remote sensing images and ecological water conveyance data from 1990 to 2018 were used. The results indicate that LUCC covered an area of 2644.34 km 2 during this period, accounting for 15.79% of the total study area. From 1990 to 2018, wetland, farmland, forestland, and artificial surfaces increased by 533.42 km 2 (216.77%), 446.68 km 2 (123.66%), 284.55 km 2 (5.67%), and 57.51 km 2 (217.96%), respectively, whereas areas covered by grassland and other land use/land cover types, such as Gobi, bare soil, and deserts, decreased by 103.34 km 2 (14.31%) and 1218.83 km 2 (11.75%), respectively. Vegetation area decreased first and then increased, with the order of 2010<2000<1990<2018. LUCC in the overflow and stagnant areas in the lower reaches of the Tarim River was mainly characterized by fragmentation, irregularity, and complexity. By analyzing the LUCC responses to 19 rounds of ecological water conveyance in the lower reaches of the Tarim River from 2000 to the end of 2018, we proposed guidelines for the rational development and utilization of water and soil resources and formulation of strategies for the sustainable development of the lower reaches of the Tarim River. This study provides scientific guidance for optimal scheduling of water resources in the region.

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Evaluation on Ecological water requirement in the Lower Reaches of Tarim River based on groundwater restoration

Cited by 2 publications

References 1 publication

Anatomical Characteristics of the Xylem of Populus euphratica at Different Groundwater Burial Depths in the Lower Tarim River (China) and Its Response to Temperature Extremes

Anatomical Characteristics of the Xylem of Populus euphratica at Different Groundwater Burial Depths in the Lower Tarim River (China) and Its Response to Temperature Extremes

Land use/land cover change responses to ecological water conveyance in the lower reaches of Tarim River, China

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