[Objective] This study aimed to investigate the artificial vegetations on soil physicochemical properties of sandy land. [Method] The soil physicochemical proper- ties in five representative lands respectively covered...[Objective] This study aimed to investigate the artificial vegetations on soil physicochemical properties of sandy land. [Method] The soil physicochemical proper- ties in five representative lands respectively covered by Artemisia ordosica, Salix cheilophila, Hedysarum scoparium, Populus simonii and Amorpha fruticosa, all of which were planted artificially at the same year were measured in the present study, using a bare soil as the control. [Result] Artificial vegetation improved the soil physicochemical properties by different extents in the lands covered by different plants. The soil physicochemical properties such as bulk density under A. Fruticosa and H. Scoparium were improved greatly. The frequency distribution of soil particle size under artificial vegetations exhibited a bimodal curve. The average soil particle size under A. fruticosa was the smallest, and the soil was very poorly sorted. The soil nutrients in the sandy land were not significantly improved by artificial vegeta- tion. [Conclusion] Artificial vegetation has a certain impact on soil properties in sandy land, as it greatly improves the soil physical properties but not the chemical properties.展开更多
Urban biodiversity is now recognized as playing a critical role in supporting global biodiversity.However,it is important to note that biodiversity is a systematic and holistic concept and prior studies have not gener...Urban biodiversity is now recognized as playing a critical role in supporting global biodiversity.However,it is important to note that biodiversity is a systematic and holistic concept and prior studies have not generally focused on cross-border or multi-scale management problems.On one hand,the ecosystems of cities are interconnected with adjacent cities by natural landscapes,so they are like mosaics instead of being isolated.Urban biodiversity research demands the consideration of the continuity within an ecosystem.On the other hand,both active protection and passive restoration strategies for urban biodiversity should not only be developed by researchers or municipal government agencies,but more importantly,they should consider the real ecosystem management problems faced by multi-scale departments in order to build a practicable Pressure-State-Response(PSR)model.The solutions for these issues should be included in the analysis to form a complete and more effective urban biodiversity strategy.The study in this paper offers an answer to whether different scales of cities or districts should adopt the same biodiversity strategy;and therefore,the decision depends on whether the places are of the same importance to the global or regional ecosystem,or whether the ecological elements are connected to the adjacent cities/districts and the problems that multiple stakeholders care about.展开更多
This article addresses the sustainability implications of post-disaster measures in the context of the 2004 Indian Ocean Tsunami by presenting an analysis of the current situations and changes in some of the affected ...This article addresses the sustainability implications of post-disaster measures in the context of the 2004 Indian Ocean Tsunami by presenting an analysis of the current situations and changes in some of the affected regions. Sustainability implications of measures are captured by investigating the persistence of the social and economic living conditions in relation to post-disaster measures, and the alignment of the measures with basic environmental aspects. Based on major concepts relevant in disaster science and sustainability research, the study explored sustainability aspects of post-disaster measures implemented after the 2004 tsunami, by conducting selected interviews among the participants of the 2015 international seminar ‘‘11 Years after the Indian Ocean Tsunami 2004'' and a broader online survey. Information was sought about(1) the current state of vulnerability of the local population in the regions affected;(2) the main lessons that have been identified to improve project design and management of recovery and vulnerability reduction;and(3) project sustainability implications with respect to the state of today's vulnerability. Based on the analysis of the information on these three priority areas, selected tasks for future disaster risk management are identified, such as more integrative planning and improved coordination with international organizations and local people.展开更多
基金Supported by National Key Technology Research and Development Program during the 12th Five-year Plan Period(2012BAD16B0202)Special Fund for Forest Scientific Research in the Public Interest(201004018)~~
文摘[Objective] This study aimed to investigate the artificial vegetations on soil physicochemical properties of sandy land. [Method] The soil physicochemical proper- ties in five representative lands respectively covered by Artemisia ordosica, Salix cheilophila, Hedysarum scoparium, Populus simonii and Amorpha fruticosa, all of which were planted artificially at the same year were measured in the present study, using a bare soil as the control. [Result] Artificial vegetation improved the soil physicochemical properties by different extents in the lands covered by different plants. The soil physicochemical properties such as bulk density under A. Fruticosa and H. Scoparium were improved greatly. The frequency distribution of soil particle size under artificial vegetations exhibited a bimodal curve. The average soil particle size under A. fruticosa was the smallest, and the soil was very poorly sorted. The soil nutrients in the sandy land were not significantly improved by artificial vegeta- tion. [Conclusion] Artificial vegetation has a certain impact on soil properties in sandy land, as it greatly improves the soil physical properties but not the chemical properties.
基金The International Cooperation Projects of Shenzhen Science and Technology Innovation Committee of China(GJHZ20190822173805220)The International Science and Technology Cooperation Platform Construction Project from China Association for Science and Technology(2021ZZGJB071545).
文摘Urban biodiversity is now recognized as playing a critical role in supporting global biodiversity.However,it is important to note that biodiversity is a systematic and holistic concept and prior studies have not generally focused on cross-border or multi-scale management problems.On one hand,the ecosystems of cities are interconnected with adjacent cities by natural landscapes,so they are like mosaics instead of being isolated.Urban biodiversity research demands the consideration of the continuity within an ecosystem.On the other hand,both active protection and passive restoration strategies for urban biodiversity should not only be developed by researchers or municipal government agencies,but more importantly,they should consider the real ecosystem management problems faced by multi-scale departments in order to build a practicable Pressure-State-Response(PSR)model.The solutions for these issues should be included in the analysis to form a complete and more effective urban biodiversity strategy.The study in this paper offers an answer to whether different scales of cities or districts should adopt the same biodiversity strategy;and therefore,the decision depends on whether the places are of the same importance to the global or regional ecosystem,or whether the ecological elements are connected to the adjacent cities/districts and the problems that multiple stakeholders care about.
文摘This article addresses the sustainability implications of post-disaster measures in the context of the 2004 Indian Ocean Tsunami by presenting an analysis of the current situations and changes in some of the affected regions. Sustainability implications of measures are captured by investigating the persistence of the social and economic living conditions in relation to post-disaster measures, and the alignment of the measures with basic environmental aspects. Based on major concepts relevant in disaster science and sustainability research, the study explored sustainability aspects of post-disaster measures implemented after the 2004 tsunami, by conducting selected interviews among the participants of the 2015 international seminar ‘‘11 Years after the Indian Ocean Tsunami 2004'' and a broader online survey. Information was sought about(1) the current state of vulnerability of the local population in the regions affected;(2) the main lessons that have been identified to improve project design and management of recovery and vulnerability reduction;and(3) project sustainability implications with respect to the state of today's vulnerability. Based on the analysis of the information on these three priority areas, selected tasks for future disaster risk management are identified, such as more integrative planning and improved coordination with international organizations and local people.
