What is already known on this topic?Triatomines,also known as kissing bugs,are widespread vectors for Chagas disease which affects 6-8 million people worldwide.Two species of triatomines have been previously reported ...What is already known on this topic?Triatomines,also known as kissing bugs,are widespread vectors for Chagas disease which affects 6-8 million people worldwide.Two species of triatomines have been previously reported in China.What is added by this report?This study showed data from the first investigation of triatomine distribution in China.Triatoma rubrofasciata and a novel species of triatomine in 170 habitats in 30 cities in southern China were recorded in this investigation.What are the implications for public health practice?Considering the worldwide spread of Chagas disease and new species of trypanosomiasis,strengthening the monitoring of triatomines and their associated diseases in southern China is vital to prevent and control these diseases.展开更多
This article analyzed the influence of increasing wages on cropping patterns from theoretical and empirical perspectives.The results showed that the increasing labor cost provided a significant incentive to adjust the...This article analyzed the influence of increasing wages on cropping patterns from theoretical and empirical perspectives.The results showed that the increasing labor cost provided a significant incentive to adjust the grain cropping pattern,which increased the production of the three major cereal grains but reduced the production of other grain crops.Increasing wages had a significant negative impact on cash crops.More laborintensive cash crops experienced a larger negative impact in the context of increasing wages.The increase in labor costs also had a negative impact on the proportion of vegetables produced,which was more evident in northern China.A further mechanism test indicated that factor substitution was a significant reason for cropping pattern changes;this illustrated the substitution of labor by machinery not only between grain crops and cash crops but also among different cash crops.展开更多
基金supported by National Science and Technology Project(No.2018ZX10101002)National Key Research and Development Program of China(Grant No.2016YFC1202000).
文摘What is already known on this topic?Triatomines,also known as kissing bugs,are widespread vectors for Chagas disease which affects 6-8 million people worldwide.Two species of triatomines have been previously reported in China.What is added by this report?This study showed data from the first investigation of triatomine distribution in China.Triatoma rubrofasciata and a novel species of triatomine in 170 habitats in 30 cities in southern China were recorded in this investigation.What are the implications for public health practice?Considering the worldwide spread of Chagas disease and new species of trypanosomiasis,strengthening the monitoring of triatomines and their associated diseases in southern China is vital to prevent and control these diseases.
基金the Major Program of National Fund of Philosophy and Social Science of China(No.21&ZD092)the National Natural Science Foundation of China(Nos.72161147001 and 72103134)the Research Program for Humanities and Social Science of the Chinese Ministry of Education(No.21YJC790139).
文摘This article analyzed the influence of increasing wages on cropping patterns from theoretical and empirical perspectives.The results showed that the increasing labor cost provided a significant incentive to adjust the grain cropping pattern,which increased the production of the three major cereal grains but reduced the production of other grain crops.Increasing wages had a significant negative impact on cash crops.More laborintensive cash crops experienced a larger negative impact in the context of increasing wages.The increase in labor costs also had a negative impact on the proportion of vegetables produced,which was more evident in northern China.A further mechanism test indicated that factor substitution was a significant reason for cropping pattern changes;this illustrated the substitution of labor by machinery not only between grain crops and cash crops but also among different cash crops.
