In recent decades ,one of the attentions of insect ecology have been paid to study of the plant-insect interactions,which focused on the delicate relationships of plant allelochemicals with insects.During the evolutio...In recent decades ,one of the attentions of insect ecology have been paid to study of the plant-insect interactions,which focused on the delicate relationships of plant allelochemicals with insects.During the evolution ,kinds of perfect adaptive strategies of insects in morphology,behavior,host-specificity,physiology,biochemistry and in the use of these substances by insects etc. have been developed. These adaptations accelaerate the co-evolution of pant-insect interactions and give us some new paths to practics. In this paper,the adaptive strategies of insects to plant allelochemicals and their significance in theory and applicaion are discussed.展开更多
Farmers’ perceptions, beliefs, adaptive strategies, and barriers regarding climate change are critical to promoting sustainable ecosystems and societal stability. This paper is based on an extensive survey of 1 500 f...Farmers’ perceptions, beliefs, adaptive strategies, and barriers regarding climate change are critical to promoting sustainable ecosystems and societal stability. This paper is based on an extensive survey of 1 500 farmers and their households in Henan Province in China during 2013–2014. Henan is the largest agricultural province in China with over 51 million farmers. The survey results showed that approximately 57% of the respondents perceived the direct impact of climate change during the past 10 years, with 70.3% believing that climate change posed a risk to their livelihood. Not surprisingly, most farmers reported that they have adopted new measures to mitigate the negative impacts of climate change. The main barriers hindering farmers’ adopting adaptation measures were lack of funds and timely information. A multinomial logit model revealed that land ownership, knowledge of crop variety and the causes of climate change, as well as the belief of climate change, were all positively related to the likelihood of employing adaptive strategies. Moreover, the percentage of households engaging in agriculture activity, and years of engaging in farming were both negatively correlated with famer’s likelihood of adopting adaptation strategies. More importantly, farmers with high incomes were less likely to adopt adaptive strategies and more willing to engage in other business activities. In conclusion, it is important to communicate climate change related information and government policies in rural areas, promote farmer associations and other educational outreach efforts to assist Chinese farmers to deal with climate change.展开更多
文摘In recent decades ,one of the attentions of insect ecology have been paid to study of the plant-insect interactions,which focused on the delicate relationships of plant allelochemicals with insects.During the evolution ,kinds of perfect adaptive strategies of insects in morphology,behavior,host-specificity,physiology,biochemistry and in the use of these substances by insects etc. have been developed. These adaptations accelaerate the co-evolution of pant-insect interactions and give us some new paths to practics. In this paper,the adaptive strategies of insects to plant allelochemicals and their significance in theory and applicaion are discussed.
基金supported by the National Natural Science Foundation of China (41301149)the National Major Scientific Research Project, China (2012CB955800)+3 种基金the China Postdoctoral Science Foundation of the Fifty-Seventh Batch of Funds (2015M570626)the Open Research Fund of the Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, China (JOF 201601)the Open Research Funding Program of Key Laboratory of Geographic Information Science, Ministry of Education (KLGIS2014A03)the Science and Technology Innovation Team Support Plan Funded for University in Henan Province, China (16IRTSTHN012)
文摘Farmers’ perceptions, beliefs, adaptive strategies, and barriers regarding climate change are critical to promoting sustainable ecosystems and societal stability. This paper is based on an extensive survey of 1 500 farmers and their households in Henan Province in China during 2013–2014. Henan is the largest agricultural province in China with over 51 million farmers. The survey results showed that approximately 57% of the respondents perceived the direct impact of climate change during the past 10 years, with 70.3% believing that climate change posed a risk to their livelihood. Not surprisingly, most farmers reported that they have adopted new measures to mitigate the negative impacts of climate change. The main barriers hindering farmers’ adopting adaptation measures were lack of funds and timely information. A multinomial logit model revealed that land ownership, knowledge of crop variety and the causes of climate change, as well as the belief of climate change, were all positively related to the likelihood of employing adaptive strategies. Moreover, the percentage of households engaging in agriculture activity, and years of engaging in farming were both negatively correlated with famer’s likelihood of adopting adaptation strategies. More importantly, farmers with high incomes were less likely to adopt adaptive strategies and more willing to engage in other business activities. In conclusion, it is important to communicate climate change related information and government policies in rural areas, promote farmer associations and other educational outreach efforts to assist Chinese farmers to deal with climate change.
