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...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 Areinfo 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 Areinfo-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
The landscape spatial feature,greenbelt landscape spatial feature and the grades and distribution of the patches in Shugang-Slender West Lake Scenic Spot were investigated by using geographic information system(GIS)wi...The landscape spatial feature,greenbelt landscape spatial feature and the grades and distribution of the patches in Shugang-Slender West Lake Scenic Spot were investigated by using geographic information system(GIS)with Quick bird image data.The results indicated:1)The proportion of the horniness landscape area was large,and the usage of the land should be adjusted.2)There were 2 979 patches of green-land in the research area.The area of these patches took up 6 528 227.0 m2 and accounted for 53.36% of the total in the research area.The small patches(<500 m2 in area)were more than the medium-large size patches and large size patches(>3 000 m2 in area)while the latter ones had larger total area.3)The green-land landscape diversity index was 0.559 5,evenness was 0.424 9,dominance was 0.394 8,contagion was 0.523 1,fragmentation was 0.456 0,green corridor density was 0.825 0 and fractal dimension was 1.148 1.4)The distribution of the landscape was uneven,and diversity was not rich.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 Areinfo 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 Areinfo-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.
文摘The landscape spatial feature,greenbelt landscape spatial feature and the grades and distribution of the patches in Shugang-Slender West Lake Scenic Spot were investigated by using geographic information system(GIS)with Quick bird image data.The results indicated:1)The proportion of the horniness landscape area was large,and the usage of the land should be adjusted.2)There were 2 979 patches of green-land in the research area.The area of these patches took up 6 528 227.0 m2 and accounted for 53.36% of the total in the research area.The small patches(<500 m2 in area)were more than the medium-large size patches and large size patches(>3 000 m2 in area)while the latter ones had larger total area.3)The green-land landscape diversity index was 0.559 5,evenness was 0.424 9,dominance was 0.394 8,contagion was 0.523 1,fragmentation was 0.456 0,green corridor density was 0.825 0 and fractal dimension was 1.148 1.4)The distribution of the landscape was uneven,and diversity was not rich.
