Abstract: Short-video platforms have reshaped how outdoor tourism is imagined, circulated, and practiced. Through algorithmic recommendation, visual storytelling, and emotional mobilization, natural landscapes are increasingly transformed into digital spectacles that stimulate imitation, destination check-ins, and concentrated flows of visitors. This paper examines the environmental governance challenges generated by this mediated form of outdoor tourism from the perspective of digital landscapes. It argues that ecological risks arise not only from the physical intensity of tourism activities but also from the mismatch between media-driven behavioral diffusion and traditional governance systems. Government regulation remains largely organized around territorial administration, platform responsibility is still insufficiently institutionalized, and public participation is often fragmented and symbolic. To address these problems, the study proposes a collaborative governance framework built around multi-stakeholder coordination, platform accountability, ecological risk early warning, and institutionalized public participation. The findings suggest that environmental governance in the digital era should move beyond post-event administrative control toward data-informed, responsibility-based, and ethically embedded coordination among governments, platforms, social organizations, and users. Read More

Abstract: The Bogda orogenic belt, located in the eastern segment of the East Tianshan Mountains, is a key component of the Central Asian Orogenic Belt. Its Late Paleozoic tectonic evolution is closely related to the final closure of the Paleo-Asian Ocean. The Upper Carboniferous Liushugou Formation (C2l) is a widely distributed marine volcanic-sedimentary rock series in the Bogda region. The second lithological member (C2l²) is characterized by the development of typical pillow basalts and serves as an important window for exploring the Late Carboniferous tectonic attributes of this area and the timing of the Paleo-Asian Ocean closure. This paper systematically reviews the regional tectonic background, petrological and geochemical characteristics of the pillow basalts of the second member of the Liushugou Formation in the Bogda Mountains, with a focus on sorting out the main academic viewpoints, core debates, and controversial focal points regarding their tectonic setting. It also summarizes current research status both domestically and internationally, aiming to provide a reference for an in-depth understanding of the Late Paleozoic tectonic evolution of the southern margin of the Central Asian Orogenic Belt. Read More

Abstract: To investigate the response mechanisms of seeds of the invasive plants Praxelis clematidea and Bidens pilosa to low-temperature environments and their dispersal potential, this study used the paper culture method in petri dishes. Seeds were subjected to 25°C （room temperature）, 4 °C, 0 °C, and -20 °C for 3 and 6 months. After treatment, germination tests were conducted under suitable conditions, with freshly collected seeds serving as the control (CK). Seed germination and seedling growth indicators were measured to analyze the effects of temperature and treatment duration on seeds and seedlings of the two species. The results showed that germination and seedling growth indicators of both species decreased with longer treatment duration and increased with lower treatment temperatures, but all remained lower than those of the CK. After 6 months at room temperature, all indicators for both species dropped to zero. After 6 months at -20 °C, the germination rates of P. clematidea and B. pilosa decreased by 33.8% and 1.2%, respectively, compared with the CK, with the latter showing a significantly smaller reduction. After 6 months of low-temperature treatment, seedling height, root length, fresh weight, and root-to-shoot ratio of both species were lower than those after 3 months, though most differences were not significant. In conclusion, seeds of P. clematidea and B. pilosa have a certain tolerance to low-temperature environments and can still germinate and establish in new habitats under suitable conditions after low-temperature treatment. Among them, B. pilosa seeds exhibit stronger low-temperature tolerance and have a higher potential risk of northward dispersal. Read More

Abstract: The Sharpear Enope squid (Ancistrocheirus lesueurii) is a highly adapted mesopelagic cephalopod found across the world's tropical and subtropical oceans. Living in the deep-sea twilight zone, it is uniquely characterized by photophores, light-producing organs on its mantle, head, and arms, used primarily for counter-illumination, a camouflage technique that masks its silhouette from predators below. Additionally, A. lesueurii possesses sharp, chitinous hooks on its tentacular clubs instead of traditional suckers, enhancing its efficiency in capturing mesopelagic fishes and crustaceans. This article synthesizes research on the squid's anatomical specializations, diel vertical migration, and ecological role as both a mid-water predator and vital prey for apex predators like sperm whales, offering insights into deep-sea food web dynamics. Read More

Abstract: The intensification of urbanization has exacerbated the conflict between the stability of rural ecosystems and economic development. Understanding the dynamic succession of ecosystem services (ESs) in rural areas is essential for achieving regional ecological sustainability. This study assessed seven ESs in the rural areas of Hangzhou from 2000 to 2020, analyzing their spatiotemporal evolution characteristics, dynamic changes in trade-offs/synergies, and driving mechanisms. The results showed that: (1) ESs exhibited a spatial distribution pattern characterized by “high in the southwest and low in the northeast.” Soil conservation and cultural services showed an overall upward trend, water yield and water purification first increased and then declined, while carbon storage, habitat quality, and food production declined continuously. (2) Among the 21 ES pairs, eight exhibited significant correlations, with notable changes observed in pairs related to food production, cultural services, and habitat quality. (3) Among the prominent trade-off/synergy pairs, socio-economic factors were identified as the dominant drivers of changes in ES trade-offs/synergies in Hangzhou‘s rural areas. Read More

Abstract: Nitrous oxide (N₂O) is an important component of agricultural greenhouse gas emissions, and nitrogen inputs to croplands represent one of the major anthropogenic sources of N₂O. The emission factor (EF), which links nitrogen input to direct N₂O emissions, has long been used in national greenhouse gas inventories and agricultural mitigation assessments. The conventional fixed-EF approach is simple and suitable for large-scale accounting, but extensive field observations have shown that cropland EFs vary substantially across climate zones, soil backgrounds, cropping systems, and management practices. A single fixed coefficient cannot adequately capture the spatial heterogeneity, interannual variability, and event-driven pulse characteristics of cropland N₂O emissions. In recent years, with the development of global field observation databases, meta-analyses, machine learning, and interpretable modelling approaches, EF research has gradually shifted from estimating average coefficients to explaining the mechanisms underlying EF variability. Existing studies indicate that cropland N₂O emissions are jointly regulated by nitrification, denitrification, and N₂O reduction processes. Their variability is mainly controlled by nitrogen substrate availability, soil moisture and oxygen diffusion, soil pH, soil organic carbon, temperature, precipitation, and agricultural management practices. Acidic soils, high SOC, high nitrogen input, humid conditions, and heavy rainfall after fertilization are more likely to create high-emission risks. Meanwhile, drying–rewetting, freeze–thaw cycles, and extreme rainfall events can trigger short-term emission peaks, further challenging the fixed-EF approach. This review synthesizes current knowledge on the variability, driving mechanisms, multifactorial interactions, and methodological advances in cropland N₂O EF research. It further suggests that future EF systems should move from fixed empirical coefficients toward regionalized, dynamic, and … Read More