[Objectives]The paper was to investigate the garden greenbelt in 30 sample plots such as parks,roads,communities,etc.in Shijiazhuang City.[Methods]The species,abundance and frequency of weeds in the greenbelt of publi...[Objectives]The paper was to investigate the garden greenbelt in 30 sample plots such as parks,roads,communities,etc.in Shijiazhuang City.[Methods]The species,abundance and frequency of weeds in the greenbelt of public gardens were recorded through point-line-surface investigation,and typical plants were sampled.[Results]There were 56 species of alien invasive plants in garden greenbelts of Shijiazhuang City,belonging to 44 genera and 20 families.In terms of life form,herbaceous plants were absolutely dominant,accounting for 92.8%of the total.The most alien invasive plants were native to America,accounting for 66.1%of the total.In terms of introduction path,the plants introduced artificially and unintentionally accounted for almost half.The species and quantity of alien invasive plants were related to the size of greenbelt area,the length of the build time of the surveyed plot,the composition structure of greenbelt and the level of green management and protection.There was larger distribution of alien invasive plants in the sample plots with large greenbelt area,long build time,herbaceous-dominated greenbelt and low level of green management and protection.Among the 56 alien invasive plants,3 plants were toxic.From the perspective of invasiveness,the alien invasive plants in the garden greenbelt of Shijiazhuang City could be divided into 5 levels:invasive alien species of malignant consequences,invasive alien species of severe consequences,invasive alien species of partial consequences,invasive alien species of average consequences,and invasive alien species to be observed.[Conclusions]This study will provide a reference for the prevention and control of alien plant invasion,and lay a foundation for the prevention and control of existing invasive plants.展开更多
Through analyzing the current urban greenbelt construction and relative issues during the development in northeastern parts in Harbin of China,some feasible solutions were proposed.In order to improve the urban ecolog...Through analyzing the current urban greenbelt construction and relative issues during the development in northeastern parts in Harbin of China,some feasible solutions were proposed.In order to improve the urban ecological environment and upgrading the constructive level of the urban greenbelt along with the sustainable development in the future,the paper provided some solutions in details.展开更多
Foururban greenbelttypesincluding roadsidegreenbelt, resident-area greenbelt, landscapeforest, and forest park, were simultaneously investigated in Shenzhen, China, in such measures as air temperature, air humidity, w...Foururban greenbelttypesincluding roadsidegreenbelt, resident-area greenbelt, landscapeforest, and forest park, were simultaneously investigated in Shenzhen, China, in such measures as air temperature, air humidity, wind speed, air anion ratio, and inhalabal particle concentration, which were strongly related with pleasing feeling of human body. The results show that the average air temperature in both forest park and landscape forest is much closer to the pleasing feeling of human body temperature than that of the rest two greenbelts, where it is 1.782 oC and 0.837 oC in forest park as well as 3.084 oC and 2.140 oC in landscape forest less than that of roadside and resident-area greenbelts, respectively. In terms of mean air humidity, forest park and landscape forestare 3.034% and 7.563% higher than that of roadside greenbelt, and 1.205% and 5.734% higher than that of resident-area greenbelt, respectively, implying a sound humidity feeling of human comfort in the formertwo types. The air cleanness holds a descending rank as forest park, landscape forest, resident-area greenbelt, and roadside greenbelt, whereas the rank in inhalable particle concentration is completely reverse. In general, landscapeforestand forestpark that mainly consistof trees haveacomparatively higher feeling of human comfort whereas roadside and resident-area greenbeltsfluctuate irregularly to some extent for themeasures studied. The four greenbelt typesinvestigated could be summarized in human comfort asthe following descending rank, forestpark, landscapeforest, resident-area greenbelt, and roadsidegreenbelt.展开更多
There existed a large area of lakes and original ecological mountain in "Tianchi Hill" in Nanning of Guangxi Province due to geographic advantage. Its design and planning should be in accordance with origina...There existed a large area of lakes and original ecological mountain in "Tianchi Hill" in Nanning of Guangxi Province due to geographic advantage. Its design and planning should be in accordance with original topography, and landscape design was in harmonious integration with original ecological environment. There were five greening landscape groups in the residential area, which were equipped with stilt space greenbelt, garden feature greenbelt, water-front greenbelt and waterscape system, lending the whole planning the characteristics of "restoration of nature, unity of heaven and human, integration of modernity and classics".展开更多
基金Supported by National Key R&D Program(2020YFF0305905-06)Science and Technology Project of Hebei Academy of Sciences(22112)Key Discipline Project of Hebei Academy of Sciences(491-0401-YBN-DDH4).
文摘[Objectives]The paper was to investigate the garden greenbelt in 30 sample plots such as parks,roads,communities,etc.in Shijiazhuang City.[Methods]The species,abundance and frequency of weeds in the greenbelt of public gardens were recorded through point-line-surface investigation,and typical plants were sampled.[Results]There were 56 species of alien invasive plants in garden greenbelts of Shijiazhuang City,belonging to 44 genera and 20 families.In terms of life form,herbaceous plants were absolutely dominant,accounting for 92.8%of the total.The most alien invasive plants were native to America,accounting for 66.1%of the total.In terms of introduction path,the plants introduced artificially and unintentionally accounted for almost half.The species and quantity of alien invasive plants were related to the size of greenbelt area,the length of the build time of the surveyed plot,the composition structure of greenbelt and the level of green management and protection.There was larger distribution of alien invasive plants in the sample plots with large greenbelt area,long build time,herbaceous-dominated greenbelt and low level of green management and protection.Among the 56 alien invasive plants,3 plants were toxic.From the perspective of invasiveness,the alien invasive plants in the garden greenbelt of Shijiazhuang City could be divided into 5 levels:invasive alien species of malignant consequences,invasive alien species of severe consequences,invasive alien species of partial consequences,invasive alien species of average consequences,and invasive alien species to be observed.[Conclusions]This study will provide a reference for the prevention and control of alien plant invasion,and lay a foundation for the prevention and control of existing invasive plants.
基金Supported by Program for Doctor Funds of Northeast Agricultural University (2009RC40)
文摘Through analyzing the current urban greenbelt construction and relative issues during the development in northeastern parts in Harbin of China,some feasible solutions were proposed.In order to improve the urban ecological environment and upgrading the constructive level of the urban greenbelt along with the sustainable development in the future,the paper provided some solutions in details.
文摘Foururban greenbelttypesincluding roadsidegreenbelt, resident-area greenbelt, landscapeforest, and forest park, were simultaneously investigated in Shenzhen, China, in such measures as air temperature, air humidity, wind speed, air anion ratio, and inhalabal particle concentration, which were strongly related with pleasing feeling of human body. The results show that the average air temperature in both forest park and landscape forest is much closer to the pleasing feeling of human body temperature than that of the rest two greenbelts, where it is 1.782 oC and 0.837 oC in forest park as well as 3.084 oC and 2.140 oC in landscape forest less than that of roadside and resident-area greenbelts, respectively. In terms of mean air humidity, forest park and landscape forestare 3.034% and 7.563% higher than that of roadside greenbelt, and 1.205% and 5.734% higher than that of resident-area greenbelt, respectively, implying a sound humidity feeling of human comfort in the formertwo types. The air cleanness holds a descending rank as forest park, landscape forest, resident-area greenbelt, and roadside greenbelt, whereas the rank in inhalable particle concentration is completely reverse. In general, landscapeforestand forestpark that mainly consistof trees haveacomparatively higher feeling of human comfort whereas roadside and resident-area greenbeltsfluctuate irregularly to some extent for themeasures studied. The four greenbelt typesinvestigated could be summarized in human comfort asthe following descending rank, forestpark, landscapeforest, resident-area greenbelt, and roadsidegreenbelt.
文摘【目的】城市绿地土壤的质量直接关系到城市生态效益及各项功能的发挥。分析中外城市绿地土壤研究文献,梳理与总结中国城市绿地土壤研究重点及未来发展方向。【方法】检索中国知网(ChinaNationalKnowledge Infrastructure)和科学网(Web of Science)核心数据库中2012—2021年关于城市绿地土壤的研究文献,利用CiteSpace从发文量、国家及机构分布、代表人物及热点内容、研究重点内容、研究发展趋势及前沿等方面,阐明该研究领域的重点内容及动态发展。【结果】近10年城市绿地土壤研究领域共发表中英文文献1 107篇,其中中国发文总量最多,且主要集中在中国科学院。国内研究内容主要为土壤质量,研究热点从土壤肥力质量到土壤污染,再到土壤改良修复。国外研究内容主要是城市绿地土壤的生态系统服务功能,研究热点从解决城市生态环境问题到提出绿地维护管理策略,再到提升城市生态环境效益。研究前沿集中在重金属污染和城市绿地生态系统。【结论】城市绿地土壤中英文文献的研究重点不同,中文文献更关注城市绿地土壤质量,这与国家政策、城市发展、生态环境保护等有关。而英文更关注城市绿地生态系统,这可能与气候变化、绿色基础设施建设、生态环境效益等有关。图3表5参58。
文摘There existed a large area of lakes and original ecological mountain in "Tianchi Hill" in Nanning of Guangxi Province due to geographic advantage. Its design and planning should be in accordance with original topography, and landscape design was in harmonious integration with original ecological environment. There were five greening landscape groups in the residential area, which were equipped with stilt space greenbelt, garden feature greenbelt, water-front greenbelt and waterscape system, lending the whole planning the characteristics of "restoration of nature, unity of heaven and human, integration of modernity and classics".
