When Environmental History Goes Public in China

This article starts out from looking at what is missing from environmental history in China today, and then goes on to ask a particular set of questions: How does one interpret environmental history with the public? How does one present environmental history in public space? How does one engage with an environmentally conscious public? And ultimately, is it possible to establish public environmental history as a new mode of knowledge? In answer to these questions, it focuses on relationships, including the relationships between nature and culture, the environment and people, and history and memory. Using the dredging history of West Lake in Hangzhou as an illustrative case, it explores nature as material culture, calls attention to the rhetorical power of nature, and argues that environmental history should be interpreted and presented as public memory.

Pollution Characteristics and Risk Assessment of Heavy Metal Elements in Sediment in the West Lake of Hengshui Lake

21 sampling points were set in the West Lake of Hengshui Lake including 20 fish ponds and 1 natural pond to analyze the contents distribution of heavy metal elements including Cr, Zn, Pb, Cu, Cd, Hg, As, and Sb in sediment. The degree of heavy metal pollution was evaluated by the geoaccumulation index (Igeo) method. The results showed that the concentrations of Cr, Zn, Pb, Cu, Cd, and Hg at in all sampling points of the fish ponds were lower than soil risk screening values of agricultural land in soil environmental quality: risk control standard for soil contamination of agricultural land (trial) (GB 15618-2018). The concentrations of As at 5 sampling points were higher than soil risk screening values and lower than soil risk control values of agricultural land in GB 15618-2018. The concentrations of Sb were lower than soil risk screening values of construction land in soil environmental quality: risk control standard for soil contamination of development land (trial) (GB 36600-2018). The evaluation results of the geoaccumulation index method showed that the pollution degrees of Cd, Pb, and Hg were moderately contaminated in general, the pollution degree of Cu was uncontaminated to moderately contaminated in general, the pollution degrees of Cr and As were uncontaminated to moderately contaminated in some sampling points, and Zn and Sb could be regarded as uncontaminated in sediment of the fish ponds in the West Lake of Hengshui Lake. Otherwise, the average contents of other heavy metal elements in sediment of the fish ponds in the West Lake of Hengshui Lake were higher than the background value of soil in Hebei Province (BVSH) except for Zn and Sb. The average contents of seven heavy metal elements in sediment of the natural pond in the West Lake of Hengshui Lake were lower than BVSH except for Cr. The result can be regarded as no pollution in the natural pond because the values of Igeo were all lower than 0. The heavy metal pollution in the sediment of the West Lake of Hengshui Lake may be due to the introduction of feeding. The water environment of the West Lake of Hengshui Lake can be effectively improved by cleaning up the sediment of fish ponds and “returning fishing to wetland.”

West Lake staging: A new staging system orchestrated by X-ray and MRI on knee osteoarthritis

Purpose: To investigate the differences on X-ray and MRI among each stage of knee osteoarthritis (KOA) and further propose a new staging system called West Lake (WL) staging. Methods: A cross-sectional study was conducted on patients with KOA. Stage I, II, III, and IV were divided based on stepwise treatment strategy of Knee osteoarthritis (KOA). Joint space widths (JSW) were measured on X-rays, whereas cartilage injuries (CI) and bone marrow lesions (BML) were evaluated on MRI. The differences of them across the groups were calculated by T-test. Receiver operating characteristic (ROC) curves were rendered to obtain the areas under the curves (AUC), Youden index and corresponding cut-off points. Results: Eventually, there were significant differences on JSW, CI, and BML between stage II/III and III/IV, while no significant differences between stage I/II. In stage II/III, the AUC of JSW, CI, BML was 0.99, 0.76, 0.71 and the Youden index was 0.94, 0.38, 0.45, meanwhile the cut-off points were ≤5.1 mm, >1, >2. In stage III/IV, the AUC of JSW, CI, BML was 0.96, 0.79, 0.74 and the Youden index was 0.84, 0.58, 0.38, meanwhile the cut-off points were ≤3.2 mm, >3, >4. Conclusion: The WL staging was described as follows: Stage I, X-ray shows no joint space narrow, normal MRI or MRI shows cartilage degeneration and only 1 or 2 sections are involved in BML. Stage II, X-ray shows joint space narrow, MRI shows cartilage defect but no full-thickness cartilage defect, meanwhile 3 or 4 sections are involved in BML. Stage III, X-ray shows serious joint space narrow even JSW disappeared, MRI shows full-thickness cartilage defect, more than 4 sections are involved in BML.

An objective evaluation method and experiment on the impact of road traffic noise on the soundscape: The case of West Lake

A positively judged soundscape generally includes both natural and social/cultural sounds in the sonic environment. Road traffic noise (RTN) is a major source of sound that may impact the both, such as the case of West Lake. Many studies examine soundscapes contexts with RTN based on physical descriptors, and subjective social scientific assessments by their descriptors mainly using onsite questionnaires to develop an understanding of the situation. By application of an objective evaluation method borrowed from speech intelligibility measurement techniques defined as the signal-to-noise-ratio-loss in the presence of RTN, research of the correlation between background RTN and environmental soundscape is developed by a self contained and evident proof derivation, proposed an objective evaluation method for protecting the soundscape from RTN, and presented the design and performance of an experiment to verify the method at two roads where RTN is propagated a distance into two roadside urban parks at West Lake. Our goal is the assessment and protection of the environmental soundscape from RTN using a convenient objective evaluation method that supplements cumbersome subjective investigations, provides an early warning concerning the RTN impact to the soundscape, and a tool how to improve the soundscape within the RTN impacted areas.

Afforestation, Propaganda, and Agency: The case of Hangzhou in Mao's China

This article examines the afforestation movement in the West Lake area in Mao's China (1949–1976). I argue that this campaign was, by its nature, propagandistic, for it created a narrative of a deforested China before 1949 and a greener land after 1949 to serve the purpose of justifying China's new political system and popularizing socialist ideologies. Hence, such projects helped to define what socialism was in China and thereby solicited the participation of the general population. This afforestation project, engineered to legitimize the Chinese Communist Party's (CCP) rule in China both domestically and internationally, was, however, marred by both human and non-human actors. Local inhabitants who were intent upon protecting their own private properties vis-à-vis the collectivizing state, poachers who illegally felled trees for firewood and timber, and tea growers who were keen on expanding their tea plantations at the cost of mountain forests sabotaged the CCP's afforestation efforts. Meanwhile, various pests contributed to the massive death of newly planted trees and prompted local cadres and citizens to adjust afforestation policies throughout Mao's times. I argue that human and non-human actors possessed non-purposive agency—that is, agency not driven by their intentions and purposes but defined by their actions—to affect, deflect, and undercut the CCP's political agendas.

Quantifying the Cooling Effect and Scale of Large Inner-City Lakes Based on Landscape Patterns: A Case Study of Hangzhou and Nanjing

The rapid urbanization worldwide has brought various environmental problems. The urban heat island (UHI) phenomenon is one of the most concerning issues because of its strong relation with daily lives. Water bodies are generally considered a vital resource to relieve the UHI. In this context, it is critical to develop a method for measuring the cooling effect and scale of water bodies in urban areas. In this study, West Lake and Xuanwu Lake, two famous natural inner-city lakes, are selected as the measuring targets. The scatter plot and multiple linear regression model were employed to detect the relationship between the distance to the lake and land surface temperature based on Landsat 8 Operational Land Imager/Thermal Infrared Sensor (OLI/TIRS) and Sentinel-2 data. The results show that West Lake and Xuanwu Lake massively reduced the land surface temperature within a few hundred meters (471 m for West Lake and 336 m for Xuanwu Lake) and have potential cooling effects within thousands of meters (2900 m for West Lake and 3700 m for Xuanwu Lake). The results provide insights for urban planners to manage tradeoffs between the large lake design in urban areas and the cooling effect demands.

Evaluating the Impact of Mega-Sports Events on Urbanization Focusing on Land-Use Changes Using a Scenario-Based Model

Mega-sports events have a profound impact on promoting the urbanization process, optimizing the urban spatial structure, and improving the competitiveness of the host city. Taking the 19th Asian Games Hangzhou 2022 (AGH) as an example, we used remote sensing data and a scenario-based model to simulate land-use changes and developments from 2005 to 2025. By setting two scenarios, natural development and AGH-driven development, we explored the impact of AGH on urban development and its driving factors. The results show that (1) cultivated land areas decreased by 369.96 km2, while construction land areas increased by 488.33 km2 among the main land-use types in Hangzhou from 2005 to 2020. Urban areas quickly expanded with the West Lake as the center. (2) Urban sprawl intensity under the AGH-driven scenario is expected to increase by 0.91% compared to in the natural-development scenario, indicating that hosting AGH would accelerate the expansion of urban land, particularly in districts set with sports venues such as Binjiang, Xiaoshan, and Yuhang. The strategic trend of supporting the Qiantang River is obvious. (3) Under the influence of AGH, the centroid of urban construction land shifted towards the southeast, and the spatial direction was remarkable. The construction of venues and supporting facilities, and construction land for public rail transit, are the main direct driving forces of urban expansion. The AGH enhances the pace of urbanization, significantly altering the urban spatial structure and helping the city achieve a major transition from the West Lake Era to the Qiantang River Era. Furthermore, our research can provide insights into other cities that will host mega-sports events.

Integrating Authenticity, Well-being, and Memorability in Heritage Tourism: A Two-Site Investigation

Authenticity, well-being, and memorability are essential to understanding tourist experience, yet little is known about the mechanism underlying these interrelated concepts. This study explores how tourists’ perceived authenticity influences memorability through their existential authenticity and well-being in the context of heritage tourism. Using data from visitors to two world heritage sites in China (West Lake and Lijiang), the effects of existential authenticity on tourists’ psychological and subjective well-being are empirically tested. Findings from cross-regional surveys reveal that existential authenticity, triggered by tourists’ perceived authenticity of local cultural heritage, is significantly associated with memorability and psychological and subjective well-being. Results further show that perceived authenticity of local cultural heritage contributes to memorability through existential authenticity and well-being. Elucidation of these conceptual relationships has theoretical and practical implications for heritage tourism studies and management.