The design and applications of a land information system built upon ARC/INFO and ArcView are presented.The proposed system not only maintains all the advantages of the more conventional implemen-tations but also enhan...The design and applications of a land information system built upon ARC/INFO and ArcView are presented.The proposed system not only maintains all the advantages of the more conventional implemen-tations but also enhances them in the following ways:1)the application program interfaces(API)are used to transmit data and messages among different parts of the system;2)the integrated system can support studies on land evaluations and ecological analyses by efficient management of attribute and spatial data and 3)correspondingly,spatial records and attributive records are linked by the same identifiers(ID).A case study application in Zigui County of the Three Gorgas Area in China demonstrates that the system could employ land-use maps and land property data to predicate and analyze the land utilization changes in the past,present and future.The ecological environment analysis can be carried out with the data of land,economics and terrain map used,showing that the system can be widely applied,especially to survey land and environment resources in the countryside area.展开更多
Diversity indices and abundance distribution models are statistical tools which ecologists have applied for decades for analyzing the intrinsic regularities of various ecological entities. In ...Diversity indices and abundance distribution models are statistical tools which ecologists have applied for decades for analyzing the intrinsic regularities of various ecological entities. In this work, we have applied these techniques to use the notions such as pedodiversity (as an example of geodiversity in a broad sense), in order to detect the differences and similarities between both natural resources, biological and non-biological. The discussion has mainly been conducted through the study of landform based pedodiversity analysis applied to SOTER digital databases in Hainan Island, China. The main analytical methods include indices of richness S that are the number of the categories (SOTER units relating to different soils in this work), indices based on proportional abundance of categories H' and E which are not only the number but also their relative abundance (in our case, the relative area occupied by each pedotaxa) is taken into account, models of the distribution of abundance of categories that provide the most complete description but also the least abridged and GIS mapping to show the spatial variation digitally.展开更多
基金Project supported by the National Natural Science Foundation of China (No. 49801010) the Chinese Academy of Sciences (No. KZ951-A1-202-02-01).
文摘The design and applications of a land information system built upon ARC/INFO and ArcView are presented.The proposed system not only maintains all the advantages of the more conventional implemen-tations but also enhances them in the following ways:1)the application program interfaces(API)are used to transmit data and messages among different parts of the system;2)the integrated system can support studies on land evaluations and ecological analyses by efficient management of attribute and spatial data and 3)correspondingly,spatial records and attributive records are linked by the same identifiers(ID).A case study application in Zigui County of the Three Gorgas Area in China demonstrates that the system could employ land-use maps and land property data to predicate and analyze the land utilization changes in the past,present and future.The ecological environment analysis can be carried out with the data of land,economics and terrain map used,showing that the system can be widely applied,especially to survey land and environment resources in the countryside area.
文摘Diversity indices and abundance distribution models are statistical tools which ecologists have applied for decades for analyzing the intrinsic regularities of various ecological entities. In this work, we have applied these techniques to use the notions such as pedodiversity (as an example of geodiversity in a broad sense), in order to detect the differences and similarities between both natural resources, biological and non-biological. The discussion has mainly been conducted through the study of landform based pedodiversity analysis applied to SOTER digital databases in Hainan Island, China. The main analytical methods include indices of richness S that are the number of the categories (SOTER units relating to different soils in this work), indices based on proportional abundance of categories H' and E which are not only the number but also their relative abundance (in our case, the relative area occupied by each pedotaxa) is taken into account, models of the distribution of abundance of categories that provide the most complete description but also the least abridged and GIS mapping to show the spatial variation digitally.
