Due to long-term human activity interference,the Hainan Tropical Rainforest National Park(HTRNP)of China has experienced ecological problems such as habitat fragmentation and biodiversity loss,and with the expanding s...Due to long-term human activity interference,the Hainan Tropical Rainforest National Park(HTRNP)of China has experienced ecological problems such as habitat fragmentation and biodiversity loss,and with the expanding scope and intensity of human activity impact,the regional ecological security is facing serious challenges.A scientific assessment of the interrelationship between human activity intensity and habitat quality in the HTRNP is a prerequisite for achieving effective management of ecological disturbances caused by human activities and can also provide scientific strategies for the sustainable development of the region.Based on the land use change data in 2000,2010,and 2020,the spatial and temporal variations and the relationship between habitat quality(HQ)and human activity intensity(HAI)in the HTRNP were explored using the integrated valuation of ecosystem services and trade-offs(InVEST)model.System dynamics and land use simulation models were also combined to conduct multi-scenario simulations of their relationships.The results showed that during 2000–2020,the habitat quality of the HTRNP improved,the intensity of human activities decreased each year,and there was a negative correlation between the two.Second,the system dynamic model could be well coupled with the land use simulation model by combining socio-economic and natural factors.The simulation scenarios of the coupling model showed that the harmonious development(HD)scenario is effective in curbing the increasing trend of human activity intensity and decreasing trend of habitat quality,with a weaker trade-off between the two compared with the baseline development(BD)and investment priority oriented(IPO)scenarios.To maintain the authenticity and integrity of the HTRNP,effective measures such as ecological corridor construction,ecological restoration,and the implementation of ecological compensation policies need to be strengthened.展开更多
A serious sandstorm occurred in North China from April 5 to April 7, 2000, while the remote smallsand decending took place in even larger area to the far northeast China. In Chanchun city, smallsand descending with sn...A serious sandstorm occurred in North China from April 5 to April 7, 2000, while the remote smallsand decending took place in even larger area to the far northeast China. In Chanchun city, smallsand descending with snow provides the best samples to conduct a quantitative research on the possible impacts of city - ecology. In the 253km2 urban district area of Changchun city, smallsands accumulated up to more than 3000t on April 7, according to the calculation of four "mud - snow" samples. After naturally melting in room temperature, two samples are taken to do quarantine of "invasion bacteria". As a preliminary result, the individual amount of bacterium in 1 ml sample water is up to 8. 9 x 104 or 1. 05 x 105, and it is estimated that there are 640 million "invasion bacterium" individuals in one square meter. This study proves that other than the obvious environmental effects of sandstorm, the urban micro - ecosystem is very possible under threat by the "invasion bacterium" accompanied by remote descending smallsand.展开更多
精确的声音采集与监测是声景生态学研究的基础,但目前声景生态学中的监测时空尺度选择尚不明晰。以Web of Science数据库核心合集2011年至2023年收录的86篇研究文献为对象,梳理与总结了声景生态学监测的空间与时间尺度及其尺度选择。在...精确的声音采集与监测是声景生态学研究的基础,但目前声景生态学中的监测时空尺度选择尚不明晰。以Web of Science数据库核心合集2011年至2023年收录的86篇研究文献为对象,梳理与总结了声景生态学监测的空间与时间尺度及其尺度选择。在空间尺度上,分区布点法和网格布点法是目前使用最多的空间布点方法,常见的录音设备的最小间距为200m,常见的录音设备的平均离地高度为1.5m,较低的设备高度适用于探寻近地面灌丛昆虫群落声景,较高的设备高度适用于记录树冠层的动物声学活动。时间尺度可分为连续与间隔式采样,其中,连续采样适合收集短期和精细化时间尺度的音频数据,触发式连续采样适用于收集特定鸣声物种的声音信息;间隔采样适合捕捉长期的声学模式变化,其中每10min或15min采样1min是目前最为主要的方式,分别占12.3%和7.4%。不同声景生态学研究目标的监测时空尺度选择差异较大,其中声景格局及其驱动因素研究多使用间隔式采样和网格布点法,生态环境质量评估多使用间隔式采样和样线布点法,生物多样性及其声学特征评估多使用连续式采样和随机布点法,而分区布点法普遍应用于各类研究目标中。目前声景生态学面临空间尺度与生态等级结构的依赖性问题、时间尺度转换及其转换精度问题、时空尺度的合理选择问题,建议未来研究需聚焦于构建立体式声景监测空间网络、开展声景生态多尺度模拟、强化声景尺度选择的定量评估。展开更多
基金Under the auspices of the National Social Science Found of China(No.21XGL019)Hainan Provincial Natural Science Foundation of China(No.421RC1034)Professor/Doctor Research Foundation of Huizhou University(No.2022JB080)。
文摘Due to long-term human activity interference,the Hainan Tropical Rainforest National Park(HTRNP)of China has experienced ecological problems such as habitat fragmentation and biodiversity loss,and with the expanding scope and intensity of human activity impact,the regional ecological security is facing serious challenges.A scientific assessment of the interrelationship between human activity intensity and habitat quality in the HTRNP is a prerequisite for achieving effective management of ecological disturbances caused by human activities and can also provide scientific strategies for the sustainable development of the region.Based on the land use change data in 2000,2010,and 2020,the spatial and temporal variations and the relationship between habitat quality(HQ)and human activity intensity(HAI)in the HTRNP were explored using the integrated valuation of ecosystem services and trade-offs(InVEST)model.System dynamics and land use simulation models were also combined to conduct multi-scenario simulations of their relationships.The results showed that during 2000–2020,the habitat quality of the HTRNP improved,the intensity of human activities decreased each year,and there was a negative correlation between the two.Second,the system dynamic model could be well coupled with the land use simulation model by combining socio-economic and natural factors.The simulation scenarios of the coupling model showed that the harmonious development(HD)scenario is effective in curbing the increasing trend of human activity intensity and decreasing trend of habitat quality,with a weaker trade-off between the two compared with the baseline development(BD)and investment priority oriented(IPO)scenarios.To maintain the authenticity and integrity of the HTRNP,effective measures such as ecological corridor construction,ecological restoration,and the implementation of ecological compensation policies need to be strengthened.
文摘A serious sandstorm occurred in North China from April 5 to April 7, 2000, while the remote smallsand decending took place in even larger area to the far northeast China. In Chanchun city, smallsand descending with snow provides the best samples to conduct a quantitative research on the possible impacts of city - ecology. In the 253km2 urban district area of Changchun city, smallsands accumulated up to more than 3000t on April 7, according to the calculation of four "mud - snow" samples. After naturally melting in room temperature, two samples are taken to do quarantine of "invasion bacteria". As a preliminary result, the individual amount of bacterium in 1 ml sample water is up to 8. 9 x 104 or 1. 05 x 105, and it is estimated that there are 640 million "invasion bacterium" individuals in one square meter. This study proves that other than the obvious environmental effects of sandstorm, the urban micro - ecosystem is very possible under threat by the "invasion bacterium" accompanied by remote descending smallsand.
文摘精确的声音采集与监测是声景生态学研究的基础,但目前声景生态学中的监测时空尺度选择尚不明晰。以Web of Science数据库核心合集2011年至2023年收录的86篇研究文献为对象,梳理与总结了声景生态学监测的空间与时间尺度及其尺度选择。在空间尺度上,分区布点法和网格布点法是目前使用最多的空间布点方法,常见的录音设备的最小间距为200m,常见的录音设备的平均离地高度为1.5m,较低的设备高度适用于探寻近地面灌丛昆虫群落声景,较高的设备高度适用于记录树冠层的动物声学活动。时间尺度可分为连续与间隔式采样,其中,连续采样适合收集短期和精细化时间尺度的音频数据,触发式连续采样适用于收集特定鸣声物种的声音信息;间隔采样适合捕捉长期的声学模式变化,其中每10min或15min采样1min是目前最为主要的方式,分别占12.3%和7.4%。不同声景生态学研究目标的监测时空尺度选择差异较大,其中声景格局及其驱动因素研究多使用间隔式采样和网格布点法,生态环境质量评估多使用间隔式采样和样线布点法,生物多样性及其声学特征评估多使用连续式采样和随机布点法,而分区布点法普遍应用于各类研究目标中。目前声景生态学面临空间尺度与生态等级结构的依赖性问题、时间尺度转换及其转换精度问题、时空尺度的合理选择问题,建议未来研究需聚焦于构建立体式声景监测空间网络、开展声景生态多尺度模拟、强化声景尺度选择的定量评估。
