In China,many scenic and tourism areas are suffering from the urbanization that results from physical development of tourism projects,leading to the removal of the vegetative cover,the creation of areas impermeable to...In China,many scenic and tourism areas are suffering from the urbanization that results from physical development of tourism projects,leading to the removal of the vegetative cover,the creation of areas impermeable to water,in-stream modifications,and other problems. In this paper,the risk of soil erosion and its ecological risks in the West Lake Scenic Spots (WLSS) area were quantitatively evaluated by integrating the revised universal soil loss equation (RUSLE) with a digital elevation model (DEM) and geographical information system (GIS) software. The standard RUSLE factors were modified to account for local climatic and topographic characteristics reflected in the DEM maps,and for the soil types and vegetation cover types. An interface was created between the Arcinfo software and RUSLE so that the level of soil erosion and its ecological risk in the WLSS area could be mapped immediately once the model factors were defined for the area. The results from an analysis using the Arcinfo-RUSLE interface showed that the risk value in 93 % of the expanding western part of the WLSS area was moderate or more severe and the soil erosion risk in this area was thus large compared with that in the rest of the area. This paper mainly aimed to increase the awareness of the soil erosion risk in urbanizing areas and suggest that the local governments should consider the probable ecological risk resulting from soil erosion when enlarging and developing tourism areas.展开更多
A comprehensive survey and analysis of alien invasive plants at the scenic spot Chengbi Lake was conducted by combining route investigation with interviews and quadrat sampling.There were 21 families,33 genera and 42 ...A comprehensive survey and analysis of alien invasive plants at the scenic spot Chengbi Lake was conducted by combining route investigation with interviews and quadrat sampling.There were 21 families,33 genera and 42 species in the scenic spot Chengbi Lake.Among them,herbal plants accounted for 69%.The Compositae and Amaranthaceae families were the most frequent,represented by 18 species in total;and 36 species of these alien invasive plants originated from America,accounting for 85.7% of the total.Fifty-seven percent of the species were introduced as ornamental plants.Seven of them were severely harmful,including Wedelia trilobata,Eupatorium odoratum,Lantana camara,Mirabilis jalapa,Solanum erianthum,Ipomoea cairica and Alternanthera philoxeroides.Strategies to increase defensive awareness,reinforce ecological protection,regulate species introduction and improve supervision mechanisms are discussed.展开更多
基金financial support from the National Natural Science Foundation of China(No.40201021)the Zhejiang Natural Science Foundation of China(M403040).
文摘In China,many scenic and tourism areas are suffering from the urbanization that results from physical development of tourism projects,leading to the removal of the vegetative cover,the creation of areas impermeable to water,in-stream modifications,and other problems. In this paper,the risk of soil erosion and its ecological risks in the West Lake Scenic Spots (WLSS) area were quantitatively evaluated by integrating the revised universal soil loss equation (RUSLE) with a digital elevation model (DEM) and geographical information system (GIS) software. The standard RUSLE factors were modified to account for local climatic and topographic characteristics reflected in the DEM maps,and for the soil types and vegetation cover types. An interface was created between the Arcinfo software and RUSLE so that the level of soil erosion and its ecological risk in the WLSS area could be mapped immediately once the model factors were defined for the area. The results from an analysis using the Arcinfo-RUSLE interface showed that the risk value in 93 % of the expanding western part of the WLSS area was moderate or more severe and the soil erosion risk in this area was thus large compared with that in the rest of the area. This paper mainly aimed to increase the awareness of the soil erosion risk in urbanizing areas and suggest that the local governments should consider the probable ecological risk resulting from soil erosion when enlarging and developing tourism areas.
基金Supported by National Nature Science Foundation of China(31660171)Young and Middle-aged Teachers’Basic Ability Improvement Project of Guangxi Education Department(KY2016YB421)2013 Backbone Teachers’Funding Project of Baise University(210203009)
文摘A comprehensive survey and analysis of alien invasive plants at the scenic spot Chengbi Lake was conducted by combining route investigation with interviews and quadrat sampling.There were 21 families,33 genera and 42 species in the scenic spot Chengbi Lake.Among them,herbal plants accounted for 69%.The Compositae and Amaranthaceae families were the most frequent,represented by 18 species in total;and 36 species of these alien invasive plants originated from America,accounting for 85.7% of the total.Fifty-seven percent of the species were introduced as ornamental plants.Seven of them were severely harmful,including Wedelia trilobata,Eupatorium odoratum,Lantana camara,Mirabilis jalapa,Solanum erianthum,Ipomoea cairica and Alternanthera philoxeroides.Strategies to increase defensive awareness,reinforce ecological protection,regulate species introduction and improve supervision mechanisms are discussed.
