Subjects: Psychology >> Physiological Psychology submitted time 2020-11-30
Abstract： When confronted with reminders of an unpleasant memory, people often try to prevent the unwanted memory from coming to mind. Suppression-induced forgetting (SIF) means that the attempt to prevent unwanted memories from entering awareness results in a decrease in the long-term accessibility of these memories. Previous studies indicated that the suppression of retrieval is accomplished by control mechanisms that inhibit unwanted memories. Suppressing retrieval increased engagement of the right dorsolateral prefrontal cortex and middle frontal gyrus and concomitantly decreased engagement of the hippocampus. The degree of SIF is affected by the emotionality of information and an individual’s emotional state and training. Future studies should investigate ways to improve the therapeutic effects of SIF on clinical pathological memory based on an in-depth understanding of the neural mechanisms of SIF. "
Subjects: Library Science，Information Science >> Information Processing Subjects: Information Science and Systems Science >> Other Disciplines of Information Science and Systems Science submitted time 2020-11-30
Abstract： With the deepening of China's medical reform, DRG/DRGs has begun to be fully implemented and is becoming increasingly important. This article statistically analyzes the subject, type, time, receiving organization and other patent information of DRG related technologies, and outlines the development of patented technologies involving DRG encoding information processing, hospital management decision support, performance management, and medical fees. It is of practical significance to the development and implementation of DRG. " "
Peer Review Status:
Awaiting Review
Subjects: Psychology >> Cognitive Psychology submitted time 2020-11-30
Abstract： How to reveal the cognitive neural correlates underlying emotional face processing has always been the popular topic for psychology and social neuroscience. Previous studies mainly used single facial expressions as the stimuli to induce and present emotions, but there is still a lack of attention and the investigation for the crowd emotion. Thus, the present project plans to reveal the neural correlates underlying the processing of crowd emotional faces through the combination of behavioral, ERP, fMRI, and TMS experiments, in which the emotional information (valence and intensity), face direction (frontal, lateral and inverse view), integrity (partial presentation, complete presentation) and spatial frequency (complete, high frequency, low frequency) will be investigated to reveal the temporal dynamics and brain activation patterns of the processing of crowd facial expressions. Finally, our work will be expected to beneficially serve the comprehensive understanding of the nature of the perception and recognition of crowd emotion, which is also of practical significance towards updating social interactions.
Subjects: Psychology >> Cognitive Psychology submitted time 2020-11-30
Abstract： The sense of agency is the experience of controlling one's own motor acts and, through these acts, controlling the course of external events in the interaction with the environment. It can be extended to the actions of other agents and the outcomes caused by their actions in social interaction. A large number of studies in the context of social interaction have shown that the sense of agency is influenced by social interaction situations such as observation, competition, cooperation and hierarchical interaction. Relevant neural mechanism studies have demonstrated that the fronto-parietal network, including primary motor cortex, angular gyrus, insula, temporo-parietal junction, medial prefrontal cortex, and precuneus, plays an important role in the sense of agency in social interaction. Future researches need to further explore the cognitive and neural mechanisms underlying the effects of social interaction situations on sense of agency, investigate the influences of multimodal stimuli on sense of agency in social interaction, and consider the modulation effects of sense of agency on cognitive processes and behavioral responses in social interaction. "
Peer Review Status:Awaiting Review
Subjects: Psychology >> Clinical and Counseling Psychology submitted time 2020-11-28
Abstract： " "
Peer Review Status:Awaiting Review
Subjects: Psychology >> Social Psychology submitted time 2020-11-27
Abstract： The true self or authenticity refers to the consistency between individual behaviors and internal states (e.g., values, beliefs, and needs), including trait authenticity and state authenticity. Cultural differences in the true self was proposed by comparing with relevant concepts (e.g., self-knowledge, self-concept clarity, self-congruence, integrity, and sincerity) and reviewing existent theories. Specifically, the true self is driven by autonomous motivation in the Western culture, while it is driven by Guanxi requirements in the Eastern culture. Future studies are recommended to further explore the true self from the "guanxilization," integrating the traditional Confucian thoughts into theoretical construction and understanding toward new social phenomena (e.g., emerging Social Networking Sites, social changes), as well as advancing research methodologies (e.g., cross-cultural comparison, methods highlighting situation variations).
Subjects: Biology >> Botany >> Applied botany submitted time 2020-11-27 Cooperative journals: 《广西植物》
Abstract：大豆RLPK2 基因（GenBank 登录号: AY687391）是一个编码N-末端富含亮氨酸重复序列的类受体蛋白激酶基因。为分析大豆RLPK2 基因的功能，通过农杆菌介导法转化野生型拟南芥，构建了大豆RLPK2 基因过表达载体。该研究以野生型拟南芥和大豆RLPK2 基因过表达拟南芥植株为材料，分析了叶片衰老过程中叶绿素荧光参数、抗氧化酶活性及衰老相关基因表达量的变化。结果表明：（1）无论是野生型还是转基因拟南芥，随着叶片衰老进程的进行，光系统II（PSII）的最大光化学效率（Fv/Fm）、PSII 实际光化学效率（ΦPSII）、光化学淬灭系数（qP）和光合电子传递速率（ETR）均呈下降趋势，但后者下降趋势更明显；（2） 激发压（1-qP）在叶片衰老前期的变化较为平稳，后期则急剧增加，且转基因型比野生型拟南芥增加更明显；（3）在叶片衰老的各个时期，转基因拟南芥叶片丙二醛（MDA）含量均显著高于野生型，而超氧化物岐化酶（SOD）、过氧化物酶（POD）和过氧化氢酶（CAT）活性均显著低于野生型；（4）实时荧光定量PCR 检测结果表明，RLPK2 转基因拟南芥中衰老标志基因ATSAG12，衰老关键转录因子ATNAP、ATWRKY6 和叶绿素降解关键酶编码基因ATACD1 等表达量显著上调。综上所述，大豆类受体蛋白激酶基因RLPK2 参与调控植物叶片衰老进程，其表达对叶片衰老起促进作用。
Subjects: Biology >> Botany >> Applied botany submitted time 2020-11-27 Cooperative journals: 《广西植物》
Abstract：为解决大花蕙兰园艺品种‘黄金小神童’（Cymbidium Golden Elf ‘Sundust’）人工繁育周期长、系数低等问题，该研究以其侧芽茎尖为外植体，在1/2MS + 1.0 mg·L-1 NAA + 50 g·L-1 香蕉泥+ 15 g·L-1 蔗糖中培养60 d 后，以获得的愈伤组织与原球茎混合物为材料，通过L9 (3)4 正交与完全组合实验研究不同因素及组合对‘黄金小神童’胚性愈伤组织和原球茎发生及增殖的影响，进而建立‘黄金小神童’高效、稳定的丛芽增殖和植株再生体系。结果表明：在MS + 2.0 mg·L-1 6-BA+ 150 mL·L-1 椰汁+ 20 g·L-1 蔗糖中，培养70 d后增殖系数达8.13，同时可获得桑葚状原球茎团。原球茎团在MS + 1.0 mg·L-1 6-BA+ 1.0 mg·L-1 NAA 中培养70 d 后，原球茎发育为幼芽，丛芽发生系数可达5.36；此时，将由原球茎诱导得到的簇状丛芽转接至MS +1.0 mg·L-1 6-BA + 1.0 mg·L-1 NAA中，以“芽繁芽”方式增殖，其增殖系数亦达4.28，此时可建立起稳定的增殖体系。无菌苗生根则在MS + 1.0 mg·L-1 NAA + 150 g·L-1香蕉中进行，培养60 d可得到具4~7片真叶、高度为8~10 cm的健壮生根苗，生根率达96.5%；再生苗经露苗后移栽到松树皮和山基土体积比为3:2的基质中，成活率可达85%以上。该研究通过愈伤组织与原球茎-胚性愈伤组织与原球茎-原球茎-丛芽-再生植株途径最终建立了黄金小神童高效、稳定的丛芽快速繁殖体系，为进一步开展其人工繁育和遗传转化提供实验依据，同时也可为兰科其他物种的无性快速繁殖提供参考。
Subjects: Biology >> Botany >> Applied botany submitted time 2020-11-27 Cooperative journals: 《广西植物》
Abstract：为探究荞麦新品种的营养保健价值，该文对自交可育甜荞、金苦荞、米苦荞共56个不同品系荞麦种子的粗蛋白、总黄酮、蛋白组分含量及其果实性状的变异进行了研究。结果表明：甜荞、金苦荞、米苦荞种子中粗蛋白含量平均值分别为13.19%、15.44%、11.75%，总黄酮含量平均值分别为0.14%、2.50%、2.09%，清蛋白含量的平均值分别为5.22%、6.13%、4.56%，球蛋白含量的平均值分别为1.29%、1.15%、0.91%，醇溶蛋白含量的平均值分别为0.42%、0.58%、0.55%，谷蛋白含量的平均值分别为2.66%、3.36%、2.80%，三种荞麦的蛋白组分均符合清蛋白>谷蛋白>球蛋白>醇溶蛋白。果实性状中，甜荞果实千粒重、果实面积、果实直径的变异系数最大，米苦荞果实周长、果实长宽比、果实长、果实宽和50 mL 容重的变异系数最大。相关分析表明：甜荞种子粗蛋白含量与果实长宽比、果实长，金苦荞种子粗蛋白含量与果实周长、果实长，米苦荞种子粗蛋白含量与果实宽、总黄酮含量与果实面积、果实宽、果实直径、50 mL 容重的相关性均达到了显著或极显著水平。该研究筛选出甜荞（1808-166 贵甜2 号优系）、金苦荞（多苦74、多苦78）、米苦荞（1906-136 黑米荞麦、43-2）等高蛋白含量或高黄酮含量的荞麦品系。上述结果对荞麦优良品种的选育和荞麦新产品的开发具有一定的指导意义。
Subjects: Biology >> Botany >> Applied botany submitted time 2020-11-27 Cooperative journals: 《广西植物》
Abstract：为探讨澳洲茶树组培苗耐受低温的能力及对低温胁迫的响应机制，该文测定了3月龄澳洲茶树组培苗低温处理过程及恢复培养后叶片叶绿素(Chl)、丙二醛(MDA)、抗氧化物酶(SOD, POD, CAT)、抗坏血酸(AsA)、谷胱甘肽(GSH)、可溶性糖(SS)、可溶性蛋白(SP)、游离脯氨酸(Pro)的变化。结果表明：(1)-5 ℃胁迫24 h，保护酶及抗氧化物质含量均显著下降，MDA含量显著上升。(2)0℃下，AsA和GSH先降后升，POD和CAT相反，SOD持续升高；胁迫48 h后保护酶活性显著升高，抗氧化剂含量显著降低。(3)10 ℃下，SOD活性先降后升；胁迫48 h后，渗透调节物质含量均显著升高。因此，3月龄澳洲茶树组培苗在-5 ℃受到致死冻害，幼苗能通过启动抗氧化系统及快速积累渗透调节物质响应0 ℃以上低温胁迫，但对10 ℃和0 ℃两种低温胁迫的应答机制却存在一定的差异。该研究结果将有助于深入了解其对低温的耐受能力及生理响应机制，为合理引种及规模化种植提供理论依据。
Subjects: Biology >> Botany >> Applied botany submitted time 2020-11-27 Cooperative journals: 《广西植物》
Abstract：近年来的分子系统学把狭义萝藦科和狭义夹竹桃科合并为广义夹竹桃科，包括5 个亚科和25 个族，但亚科和族间的亲缘关系较为复杂，亟待多学科证据澄清。本文利用常规石蜡切片技术观察了马利筋亚科南山藤属中的中国特有植物苦绳（Dregea sinensis Hemsl. var. Sinensis）的大小孢子发生和雌雄配子体发育，结合已有资料比较了5 个亚科的胚胎学特征，结果表明：（1）苦绳的花药由一对侧生并列药室组成，每个药室有一个花粉团；（2）花药壁有6 层，由外至内分别为表皮、2 层药室内壁、中层和2层绒毡层，花药壁发育模式属于多层型；（3）单核绒毡层细胞排成2 列，为腺质型；在小孢子四分体形成时期，药室内壁发生明显纤维状加厚；花药成熟时，位于药室远轴最外侧处的花药壁发生断裂，准备散粉；（4）小孢子母细胞减数分裂胞质分裂为连续型，小孢子四分体排列方式为左右对称型；成熟花粉粒为3-细胞型，排列紧密，形成花粉团；（5）雌蕊含有两枚离生心皮，具边缘胎座，胚珠倒生，单珠被，薄珠心，蓼型胚囊。苦绳的大小孢子发生和雌雄配子体的发育特征补充了南山藤属的胚胎学资料。同时，胚胎学特征在5 个亚科间的区别和联系，支持广义夹竹桃科的确立。
Subjects: Biology >> Botany >> Applied botany submitted time 2020-11-27 Cooperative journals: 《广西植物》
Abstract：该研究对采自于我国的200 余份赤星衣属(Haematomma)地衣标本利用形态学、化学、生态学等特征进行了综合研究，发现赤星衣属一新种和一中国新记录种。新种为砖壁赤星衣(Haematomma muriformis)，主要特征为子囊盘红色，孢子砖壁型，较宽(75~87.5×12.5~20 μm)，所含化学物质为atranorin、haematommone 和arthothelin。中国新记录种为马托赤星衣(Haematomma matogrossense)。该文对新种和中国新记录种进行了详细的特征描述，提供了形态和解剖照片，同时提供了已知中国赤星衣属地衣物种的检索表。该研究充实了赤星衣属地衣的数据信息资源库，为《中国地衣志》的编写提供了基础资料。
Subjects: Biology >> Botany >> Applied botany submitted time 2020-11-27 Cooperative journals: 《广西植物》
Abstract：根压是植物根部产生的一种静水压力，广泛存在于多种植物中。在蒸腾作用很弱的情况下，根压不仅驱动水分从根部流向冠层叶片，缓解因白天强烈蒸腾而导致的水分亏缺，而且在木质部导管栓塞修复方面发挥重要作用。虽然国内外学者对根压的产生已有一些解释，普遍接受的观点有渗透理论、代谢理论和水分向上共同运输假说等，但根压产生的机制至今仍是科学家争议的焦点之一。根压的测定方法虽有直接和间接测定、有损伤和无损伤测定之分，但较为先进的根压测定技术仍需进一步改善和提升。受水通道蛋白、遗传因素、生境等因素的影响，根压的大小存在差异，即使是较低的根压也会影响农作物生长。在促进转运蛋白质、酶、氨基酸、激素及钙元素等在农作物木质部和韧皮部之间流通方面，适当大小的根压发挥重要作用，且有助于提高农作物产量。虽然当前国内外学者对植物根压已有一些相关研究，但是仍缺乏对根压进行系统全面梳理。因此，加深对植物根压的认识和理解具有重要的生物学意义。该文从根压的定义和产生机制、具有根压的植物类群、根压的测定方法和大小、影响根压的主要因素及根压在植物科学研究领域的意义和影响等多个方面分别进行了归纳总结，并结合当前研究热点和研究成果，针对植物根压研究过程中遇到的问题和后续研究趋势及方向进行了展望。
Subjects: Psychology >> Developmental Psychology Subjects: Psychology >> Educational Psychology submitted time 2020-11-26
Abstract： From the perspective of life course, school transition is considered a key turning point in adolescent development and may alter individual developmental trajectories. Based on the deficit view, previous studies have suggested that most adolescents are at risk, beset by many challenges, and may experience a variety of negative developmental outcomes during that transition. Drawing on the positive youth development perspective, however, the transition period may be an important opportunity for adolescents to achieve adaptive and healthy development, and it is also the period in which developmental plasticity is most fully manifested. Along this line, if adolescents’ internal and external assets are well integrated, they may have a positive school transition." " "
Subjects: Psychology >> Management Psychology submitted time 2020-11-26
Abstract： "
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Geography submitted time 2020-11-25 Cooperative journals: 《干旱区科学》
Abstract： The seif dune field over the gravel desert surface in the eastern margin of the Kumtagh Desert is a valuable experimental site for the observation of dune formation and dynamics. We used high-resolution remote sensing and station observation approaches, combined with wind and grain size data, to study the characteristics of the aeolian environment and the morphologies of and dynamic changes in seif dunes. We observed the ratio of the resultant drift potential (RDP) to the drift potential (DP), which was 0.37, associated with an obtuse bimodal wind regime. The drift potentials in the west-northwest (WNW) and east-northeast (ENE) directions were dominant, and the angle between the two primary DP directions was 135.00°. The dune orientations ranged from 168.75°–213.75°, which were parallel to the resultant drift direction (186.15°). The dune lengths ranged from 51.68 to 1932.11 m with a mean value of 344.91 m. The spacings of the dunes ranged from 32.34 to 319.77 m with a mean value of 93.39 m. The mean grain size of the sediments became finer, and the sorting became better from upwind tail to downwind tip, which indicated that the sediment of the seif dunes in the study region may be transported from northward to southward. The rate of increase in the length, the mean longitudinal migration rate of the dune tail, and the mean longitudinal extension rate of the dune tip (also called elongation rate) were 4.93, 4.63, and 9.55 m/a, respectively. The mean lateral migration vector of the seif dunes was approximately 0.11 m/a towards the west (–0.11 m/a), while the mean amplitude of lateral migration was 0.53 m/a, ignoring the direction of lateral migration. We found that the seif dune field formed first beside seasonal rivers, which can provide sediment, and then expanded downwind.
Subjects: Geosciences >> Geography submitted time 2020-11-25 Cooperative journals: 《干旱区科学》
Abstract： Soil erosion in the Three-River Headwaters Region (TRHR) of the Qinghai-Tibet Plateau in China has a significant impact on local economic development and ecological environment. Vegetation and precipitation are considered to be the main factors for the variation in soil erosion. However, it is a big challenge to analyze the impacts of precipitation and vegetation respectively as well as their combined effects on soil erosion from the pixel scale. To assess the influences of vegetation and precipitation on the variation of soil erosion from 2005 to 2015, we employed the Revised Universal Soil Loss Equation (RUSLE) model to evaluate soil erosion in the TRHR, and then developed a method using the Logarithmic Mean Divisia Index model (LMDI) which can exponentially decompose the influencing factors, to calculate the contribution values of the vegetation cover factor (C factor) and the rainfall erosivity factor (R factor) to the variation of soil erosion from the pixel scale. In general, soil erosion in the TRHR was alleviated from 2005 to 2015, of which about 54.95% of the area where soil erosion decreased was caused by the combined effects of the C factor and the R factor, and 41.31% was caused by the change in the R factor. There were relatively few areas with increased soil erosion modulus, of which 64.10% of the area where soil erosion increased was caused by the change in the C factor, and 23.88% was caused by the combined effects of the C factor and the R factor. Therefore, the combined effects of the C factor and the R factor were regarded as the main driving force for the decrease of soil erosion, while the C factor was the dominant factor for the increase of soil erosion. The area with decreased soil erosion caused by the C factor (12.10×103 km2) was larger than the area with increased soil erosion caused by the C factor (8.30×103 km2), which indicated that vegetation had a positive effect on soil erosion. This study generally put forward a new method for quantitative assessment of the impacts of the influencing factors on soil erosion, and also provided a scientific basis for the regional control of soil erosion.
Subjects: Geosciences >> Geography submitted time 2020-11-25 Cooperative journals: 《干旱区科学》
Abstract： Global warming is one of the most complicated challenges of our time causing considerable tension on our societies and on the environment. The impacts of global warming are felt unprecedentedly in a wide variety of ways from shifting weather patterns that threatens food production, to rising sea levels that deteriorates the risk of catastrophic flooding. Among all aspects related to global warming, there is a growing concern on water resource management. This field is targeted at preventing future water crisis threatening human beings. The very first stage in such management is to recognize the prospective climate parameters influencing the future water resource conditions. Numerous prediction models, methods and tools, in this case, have been developed and applied so far. In line with trend, the current study intends to compare three optimization algorithms on the platform of a multilayer perceptron (MLP) network to explore any meaningful connection between large-scale climate indices (LSCIs) and precipitation in the capital of Iran, a country which is located in an arid and semi-arid region and suffers from severe water scarcity caused by mismanagement over years and intensified by global warming. This situation has propelled a great deal of population to immigrate towards more developed cities within the country especially towards Tehran. Therefore, the current and future environmental conditions of this city especially its water supply conditions are of great importance. To tackle this complication an outlook for the future precipitation should be provided and appropriate forecasting trajectories compatible with this region's characteristics should be developed. To this end, the present study investigates three training methods namely backpropagation (BP), genetic algorithms (GAs), and particle swarm optimization (PSO) algorithms on a MLP platform. Two frameworks distinguished by their input compositions are denoted in this study: Concurrent Model Framework (CMF) and Integrated Model Framework (IMF). Through these two frameworks, 13 cases are generated: 12 cases within CMF, each of which contains all selected LSCIs in the same lead-times, and one case within IMF that is constituted from the combination of the most correlated LSCIs with Tehran precipitation in each lead-time. Following the evaluation of all model performances through related statistical tests, Taylor diagram is implemented to make comparison among the final selected models in all three optimization algorithms, the best of which is found to be MLP-PSO in IMF.
Subjects: Geosciences >> Geography submitted time 2020-11-25 Cooperative journals: 《干旱区科学》
Abstract： There are eight provinces and autonomous regions (Gansu Province, Ningxia Hui Autonomous Region, Xinjiang Uygur Autonomous Region, Inner Mongolia Autonomous Region, Tibet Autonomous Region, Qinghai Province, Shanxi Province, and Shaanxi Province) in Northwest China, most areas of which are located in arid and semi-arid regions (northwest of the 400 mm precipitation line), accounting for 58.74% of the country's land area and sustaining approximately 7.84×106 people. Because of drought conditions and fragile ecology, these regions cannot develop agriculture at the expense of the environment. Given the challenges of global warming, the green total factor productivity (GTFP), taking CO2 emissions as an undesirable output, is an effective index for measuring the sustainability of agricultural development. Agricultural GTFP can be influenced by both internal production factors (labor force, machinery, land, agricultural plastic film, diesel, pesticide, and fertilizer) and external climate factors (temperature, precipitation, and sunshine duration). In this study, we used the Super-slacks-based measure (Super-SBM) model to measure agricultural GTFP during the period 2000–2016 at the regional level. Our results show that the average agricultural GTFP of most provinces and autonomous regions in arid and semi-arid regions underwent a fluctuating increase during the study period (2000–2016), and the fluctuation was caused by the production factors (input and output factors). To improve agricultural GTFP, Shaanxi, Shanxi, and Gansu should reduce agricultural labor force input; Shaanxi, Inner Mongolia, Gansu, and Shanxi should decrease machinery input; Shaanxi, Inner Mongolia, Xinjiang, and Shanxi should reduce fertilizer input; Shaanxi, Xinjiang, Gansu, and Ningxia should reduce diesel input; Xinjiang and Gansu should decrease plastic film input; and Gansu, Shanxi, and Inner Mongolia should cut pesticide input. Desirable output agricultural earnings should be increased in Qinghai and Tibet, and undesirable output (CO2 emissions) should be reduced in Inner Mongolia, Xinjiang, Gansu, and Shaanxi. Agricultural GTFP is influenced not only by internal production factors but also by external climate factors. To determine the influence of climate factors on GTFP in these provinces and autonomous regions, we used a Geographical Detector (Geodetector) model to analyze the influence of climate factors (temperature, precipitation, and sunshine duration) and identify the relationships between different climate factors and GTFP. We found that temperature played a significant role in the spatial heterogeneity of GTFP among provinces and autonomous regions in arid and semi-arid regions. For Xinjiang, Inner Mongolia, and Tibet, a suitable average annual temperature would be in the range of 7°C–9°C; for Gansu, Shanxi, and Ningxia, it would be 11°C–13°C; and for Shaanxi, it would be 15°C–17°C. Stable climatic conditions and more efficient production are prerequisites for the development of sustainable agriculture. Hence, in the agricultural production process, reducing the redundancy of input factors is the best way to reduce CO2 emissions and to maintain temperatures, thereby improving the agricultural GTFP. The significance of this study is that it explores the impact of both internal production factors and external climatic factors on the development of sustainable agriculture in arid and semi-arid regions, identifying an effective way forward for the arid and semi-arid regions of Northwest China.
Subjects: Geosciences >> Geography submitted time 2020-11-25 Cooperative journals: 《干旱区科学》
Abstract： To combat the problem of residual film pollution and ensure the sustainable development of agriculture in oasis areas, a field experiment was carried out in 2019 at the Wuyi Farm Corps Irrigation Center Test Station in Urumqi, Northwest China. Four types of biodegradable mulches, traditional plastic mulchs and a control group (bare land; referred to as CK) were compared, including a total of six different treatments. Effects of mulching on soil water and heat conditions as well as the yield and quality of processing tomatoes under drip irrigation were examined. In addition, a comparative analysis of economic benefits of biodegradable mulches was performed. Principal component analysis and gray correlation analysis were used to evaluate suitable mulching varieties for planting processing tomatoes under drip irrigation. Our results show that, compared with CK, biodegradable mulches and traditional plastic mulch have a similar effect on retaining soil moisture at the seedling stage but significantly increase soil moisture by 0.5%–1.5% and 1.5%–3.0% in the middle and late growth periods (P<0.050), respectively. The difference in the thermal insulation effect between biodegradable mulch and plastic mulch gradually reduces as the crop grows. Compared with plastic mulch, the average soil temperature at 5–20 cm depth under biodegradable mulches is significantly lowered by 2.04°C–3.52°C and 0.52°C–0.88°C (P<0.050) at the seedling stage and the full growth period, respectively, and the water use efficiency, average fruit yield, and production-investment ratio under biodegradable mulches were reduced by 0.89%–6.63%, 3.39%–8.69%, and 0.51%–6.33% (P<0.050), respectively. The comprehensive evaluation analysis suggests that the black oxidized biological double-degradation ecological mulch made from eco-benign plastic is the optimal film type under the study condition. Therefore, from the perspective of sustainable development, biodegradable mulch is a competitive alternative to plastic mulch for large-scale tomato production under drip irrigation in the oasis.
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