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Purpose: The purpose of this study is to determine the technical and tactical styles of the world's best badminton players at the Tokyo 2020 Olympic Games. Materials and methods: The research material consisted of the post-event analysis of 58 matches from the Tokyo Olympics. Through AHP analysis (analytic hierarchy process) to 6 temporal variables with a high influence on match/game effectiveness were selected. Match/game statistical analysis, with the one-way measure of the variance (ANOVA), and independent-sample T-test, were conducted by using IBM SPSS for Windows version 22.0 (IBM. Corp. Armonk, NY) in order to compare the statistical differences. Results: This conducted study showed that frequency of strokes in badminton was 1-1.12 strokes/sec, which is one of the longest rally strokes. The mean and standard deviation of the women's singles players, particularly in the knockout stage, is greater than the mean and standard deviation of the group stage. Results show the differences between Group Phase (35.05±9.77, 47.07±13.12, s, P=0.020) and Eliminatory Phase (11.93±1.58, 13.93±2.30, s, P=0.030) respectively. Conclusions: The women's singles competition currently mainly revolves around the technical and tactical styles of "fast-oriented", "offensive-oriented" and “self-oriented”. This is in line with the current trend of development of the world's women's singles athletes' more "masculine" style of play.

In recent years, ecological capital has begun to draw the attention of the theoretical circle as a concept by which people enhance their understanding of the importance of ecological resources. Through market-oriented means, people strengthen the ecological capital operation to solve the problem of the deteriorating ecological environment, which also gradually get attention from all sectors of society. However, there are still few scholars to carry out in-depth studies on regional ecological capital from the perspective of operation mode and operation path. This study constructs a ecological capital operation mode of Poyang Lake Eco-Economic Zone and explores a mode operation path with Poyang Lake Eco-Economic Zone as specific object of study. Poyang Lake Eco-Economic Zone has abundant ecological resources, therefore how to convert these ecological resources into ecological capital is the key to achieve green development in Poyang Lake Eco-Economic Zone, and also an important link in Jiangxi's ecological civilization construction. Based on the description of the current situation of ecological resources in Poyang Lake Eco-Economic Zone, this article points out that the ecological capital operation in Poyang Lake Eco-Economic Zone is a way to achieve eco-economic development in this area, so as to realize the preservation and increment of ecological capital. The main bodies of ecological capital operation in Poyang Lake Eco-Economic Zone (government, enterprises and social organizations) should clarify their respective responsibilities, vigorously develop ecological industry, ecological agriculture and ecological service industry, promote the organic integration of these three industries, construct an ecological capital operation benefit feedback mechanism and experience summary mechanism, convert the ecological resources in Poyang Lake Eco-Economic Zone into ecological capital, promote the regional economic development and change the “beautiful scenery” into “treasure and fortune” through the operation mode of marketization and the selection of a reasonable development and operation path. The purpose of this study is to solve the growing contradiction between the economic development and the resource environment contradictions in Poyang Lake Eco-Economic Zone. It also provides reference for other regions, especially the economically underdeveloped regions, to achieve the harmonious development of ecology and economy. In the future, we will strengthen the identification of the ownership of the ecological resources and the accounting of the ecological capital value at the practical level, so as to enhance the operability of the effective operation of ecological capital