Characteristics and Mechanics Analysis of Debris Flow Disaster in Xinjiang Arid Area

Lv, Li Qun; Chen, Ning Sheng; Yang, Lü; Huang, Qiaorong; Li, Jun; Zhu, Yun

doi:10.4028/www.scientific.net/amr.594-597.2318

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…At present, Xinjiang has become one of the largest production and export regions for processed tomatoes in China and the third largest in the world, with the export ratio accounting for more than 30% of the global trade, jumping up to become the most important processed tomato production base in China [3,4]. However, 2 of 16 Xinjiang is a typical arid and semiarid region, and its annual rainfall is only one-tenth of the evapotranspiration, making water resources very scarce [5,6]. However, processing tomatoes requires a significant amount of water during their whole life cycle [7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Regulated Deficit Irrigation on the Growth, Yield, and Irrigation Water Productivity of Processing Tomatoes under Drip Irrigation and Mulching

Xu,

Wan,

Zhu

et al. 2023

Agronomy

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The application of regulated deficit irrigation (RDI) strategies with high water-saving effects for processing tomatoes is an important current research trend. In this study, we aimed to reveal the patterns of growth, yield, and irrigation water productivity (WPI) in response to the water deficit in processing tomatoes under drip irrigation and plastic mulching in Xinjiang. To determine a more precise irrigation regime, various degrees of RDI treatments were applied to processing tomatoes in 2022 and 2023. A total of five water gradients were set up: RI (Regular Irrigation; 4500 m3/ha), W1 (4185 m3/ha), W2 (3870 m3/ha), W3 (3555 m3/ha), and W4 (3240 m3/ha). The results revealed that under RI, the yield and irrigation water productivity were 142 t/ha and 31.49 kg/m3, respectively. Compared with RI, W1 exhibited an increase in yield and irrigation water productivity of 12.13% and 22.39%, respectively; however, other treatments exhibited a decrease. The main reasons for the increase in yield under the W1 treatment were: the W1 treatment, improved photosynthetic performance, increased dry matter accumulation, and improved soil moisture conditions, thus promoting plant growth and development. In addition, in terms of water regulation at various fertility stages, moderate water deficiency at the seedling stage (S), flowering stage (F), and maturity stage (M) and rewatering at the fruit expansion stage (E) were more conducive to optimizing the yield structure. In conclusion, considering plant growth status, dry matter accumulation, yield, and WPI, we suggested that the W1 treatment is the optimal RDI mode most suitable for drip irrigation under mulching for processing tomatoes in Xinjiang. This study provided a theoretical and technical basis for the promotion of “water-saving and efficiency-enhancing” production of processing tomatoes.

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Section: Introductionmentioning

confidence: 99%

Effect of Regulated Deficit Irrigation on the Growth, Yield, and Irrigation Water Productivity of Processing Tomatoes under Drip Irrigation and Mulching

Xu,

Wan,

Zhu

et al. 2023

Agronomy

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show abstract

“…Previous research on debris flows in the TSMs has primarily concentrated on analyzing debris flows at a single gully scale [12][13][14][15], including the gully tectono-geomorphologic investigation, disaster event's parameter calculation, and mitigation method planning. Yet, the establishment of a region-wide debris flow database and debris flow hazard and risk assessment are still lacking.…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment and Analysis of Its Influencing Factors of Debris Flows in Typical Arid Mountain Environment: A Case Study of Central Tien Shan Mountains, China

Li,

Wu,

Chen

et al. 2023

Remote Sensing

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The Tien Shan Mountain range connects Central Asia with northwestern China and is a crucial transport junction between East and West Asia. It is a common location for regional debris flows, which pose a significant risk to ecological security and the safety of people and property. Nevertheless, limited knowledge exists about the distribution of disaster risks and the impacted populations. This study uses advanced machine learning techniques to identify the key natural and social factors influencing these hazards and incorporates the Social Vulnerability Index (SoVI) to assess societal vulnerability. The outcomes demonstrate that (1) the debris flow hazard in the Tien Shan Mountain area is primarily governed by the geological structure, which dictates the material source and, in turn, dictates the onset of debris flows. (2) The vulnerability demonstrates a high spatial tendency in the north and a low one in the south, with evident spatial clustering characteristics. (3) A total of 19.13% of the study area is classified as high-hazard, with specific distribution zones including the northern foothills of the Tien Shan Mountains, the low-mountain zones of the southern foothills of the Tien Shan Mountains, and the Yili Valley zone. This holistic approach offers valuable insights into the spatial distribution of risks, aiding in prioritizing disaster preparedness and mitigation efforts. Also, our findings and conclusions are beneficial for local decision makers to allocate resources effectively and promote sustainable development practices in the region.

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“…Xinjiang, China is a typical arid area with a large temperature difference between day and night. The annual precipitation of Xinjiang is 147 mm, and the annual average evaporation is as high as 1500-2300 mm [2,3]. Water resources in this area are exceedingly scarce, and the sustainable development of agriculture in this area depends on irrigation [4,5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Suitable Mixture of Water and Air for Processing Tomato in Drip Irrigation in Xinjiang Oasis

et al. 2021

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Aerated irrigation (AI) has emerged as a method to mitigate rhizosphere hypoxia caused by wetting front with sub-surface drip irrigation (SDI). Increasing oxygen in processing tomato’s root zone is beneficial to the improvement of the rhizosphere gas environment, crop growth, yield and quality. The relationship between aerated irrigation and irrigation quantity is not clear. A total of eight treatments, including four irrigation levels (4950 m3 hm−2 (W1), 4750 m3 hm−2 (W2), 4500 m3 hm−2 (W3), 4050 m3 hm−2 (W4)) in combination with aerated irrigation (A2) and non-aerated irrigation (A1) were used to investigate the effects of aerated irrigation on the physiological characteristics and yield of processing tomatoes under mulched drip irrigation in Xinjiang, China. The effects of aerated irrigation on plant height, stem diameter, leaf area index and dry matter, photosynthesis, fluorescence, fruit quality and yield of processing tomatoes were studied. The results showed that plant height, stem diameter, biomass accumulation and leaf area index of processing tomatoes under aerated irrigation were increased by 10.2%, 7.3%, 12.5% and 6.2% under the W1, W2, W3 and W4 conditions (p < 0.05), respectively, compared with non-aerated irrigation. Yield and the content of Vitamin C and soluble solids under aerated irrigation was 9.71%, 5.59% and 5.68% (p < 0.05) higher than that under conventional irrigation, respectively, and the sugar-acid under aerated irrigation decreased by 0.5%. Through principal component analysis, W2A2 treatment had a higher score according to the yield index (per fruit weight, fruit number per plant) and quality index (Vitamin C, soluble solids, sugar-acid ratio) than the other treatments. The results show that aerated irrigation is feasible under the existing mulched drip irrigation in Xinjiang and, in this experiment, W2A2 treatment was the most suitable planting mode.

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Characteristics and Mechanics Analysis of Debris Flow Disaster in Xinjiang Arid Area

Cited by 3 publications

References 3 publications

Effect of Regulated Deficit Irrigation on the Growth, Yield, and Irrigation Water Productivity of Processing Tomatoes under Drip Irrigation and Mulching

Effect of Regulated Deficit Irrigation on the Growth, Yield, and Irrigation Water Productivity of Processing Tomatoes under Drip Irrigation and Mulching

Risk Assessment and Analysis of Its Influencing Factors of Debris Flows in Typical Arid Mountain Environment: A Case Study of Central Tien Shan Mountains, China

Evaluation of Suitable Mixture of Water and Air for Processing Tomato in Drip Irrigation in Xinjiang Oasis

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