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Henan Province is the birthplace of Chinese civilization and one of the earliest human settlements, which means that the area has an important national cultural heritage. Traditional villages are an important facet of this cultural heritage, and studying their spatiotemporal characteristics in different periods has important theoretical and practical significance for the sustainable development and protection of cultural heritage in the region. This paper takes the traditional villages of the Yellow River basin in Henan Province that were formed before 1919 as the research object. Information on the ancient river was obtained through a literature search as well as via field research, and the important tributaries of the Yellow River in different periods were mapped using ArcGIS 10.0 software. The nearest neighbor index, kernel density estimation, standard deviation ellipse and other methods were adopted to analyze the spatiotemporal characteristics of the traditional villages. The factors that influenced the evolution of traditional villages were explored in depth by combining changes in the course of the river and water conservancy projects. The results show that the formation of traditional villages along the Yellow River in Henan Province has experienced a historical track of growth, contraction, growth and prosperity and stability. The traditional villages along the Yellow River in Henan Province generally show a clustered pattern, forming a dense concentration of traditional villages in the middle reaches of the Yellow River. The center of gravity shows a migration trend from southeast to northwest. In terms of influencing factors, the spatiotemporal evolution of the relationship between villages and their distance to water is closely related to climatic fluctuations, changes in channel, water conservancy projects and social and cultural factors. This paper deepens our understanding of the relationship between traditional village evolution and watersheds by improving the consistency between village spatial distribution and historical geography and provides a useful theoretical reference for the sustainable development of China's traditional villages. [ABSTRACT FROM AUTHOR]

Firstly, based on the river health evaluation theory and starting from the integrity of the river system, the river health evaluation index system is selected. Secondly, the index systems of river health assessment including river morphology, hydrological and environmental characteristics, habitat elements and human activity characteristics are determined. Thirdly, set-pair (SPA) evaluation theory and extension were dealt with, a set-pair analysis-extension coupling model is constructed. Finally, taking Huangchuan Rive as an example, the ecological health evaluation on the river channel is carried out by using set-pair analysis-extension coupling model. The results of the comprehensive evaluation using the set-pair analysis-extension coupling method is obtained through calculation. It is proved by practice that the method of river health evaluation using the coupling model of set-pair analysis and extension theory could make full use of the data transformation and extension calculation, which shows the superiority in calculating correlation degree, and could reflect the determination and uncertainty of practical problems. It is possible to comprehensively consider all relevant factors. The paper provides a new idea for solving the relevant problems and obtains more accurate conclusion. [ABSTRACT FROM AUTHOR]

Ecological anthropology in China has a history of more than 70 years, and can be divided into four stages. The first stage was in the 1950s, which began with China's identification of minzu and socio-historical surveys of ethnic minorities. This stage was characterized by refinement and application of the Economic-Cultural Type theory from Soviet ethnography. The second stage took place in the 1980s and 1990s, when China's ecological anthropology research focused on explaining the relationship between local group culture and the environment, and how this changed in the process of modernization. Studies in this phase mainly concentrated on China's southwestern and northwestern regions, and the theoretical trends of the "adaptation model" and "the cost of development" were formed, becoming central topics. The third stage was in the first decade of the twenty-first century, when Chinese ecological anthropologists focused on the natural and social consequences of changes in the ecological environment, and stressed the importance of exploring, protecting and transforming local ecological knowledge. Ecological anthropology research flourished in Hunan, Guizhou, and Guangxi as well as in the Daxing'anling and Xiaoxing'anling mountainous regions of Northeast China. The fourth stage was in the most recent decade, when ecological anthropologists expanded their research to cover disasters, biodiversity, local social vulnerability and promotion of ecological progress, and their research areas expanded to the southeastern coast, inland river basins and traditional farming areas in the Central Plains. This paper argues that the development of ecological anthropology in China has been driven by academic consciousness rooted in local field experience, accurate understanding of the research target and changes in social situations of the era, and in-depth dialogue with Western ecological anthropological theories. At present, China's economic and social development patterns and the relationship between local people and their ecological environments are undergoing profound changes. Therefore, China's ecological anthropology should respond and adapt to these new changes through solid ethnographic surveys, take root in local field experience, and draw on the wisdom of ecological civilization development in excellent traditional Chinese culture, to become aware of new theories and carry out innovative development. [ABSTRACT FROM AUTHOR]

In summer 2020, precipitation in many parts of China reached its maximum in the past 60 years, and southern China suffered from severe flooding, which was mainly due to the strong westward subtropical high, the enhanced east Asian summer monsoon, the development of meridional circulation, and the active cold vortex in the middle and high latitudes. We tried to apply a statistical bias correction method to improve the prediction of summer precipitation at 160 stations in China in 2020. In summer 2020, the precipitation anomaly percentages were above 40% in the Yellow River Basin and the Yangtze River Basin. Using the bias correction method, the main rain belt of the corrected summer precipitation was located in the Yangtze River's middle reaches and the Yellow River Basin, which is in line with the observations, but it does not catch the trend of more summer precipitation in the Huaihe River Basin. In addition, the corrected predicted results can basically catch the trend of dryness in South and Southwest China. Relative to the original model output, the abnormal correlation coefficient (ACC) between the corrected predictions, and the observations increased from − 0.02 to 0.30, and the prediction score (PS) increased from 67.8 to 77.4 for summer rainfall in 2020. Moreover, the bias correction method showed stable and considerable improvement for the prediction of summer precipitation in China from 2014 to 2019. Overall, this study demonstrates that the bias correction method can effectively improve the accuracy of the summer precipitation predicted results in China. [ABSTRACT FROM AUTHOR]