The demand for electric power data is more and more widely, and put forward higher requirements to the quality of statistical data. This paper combined with the features of electric power data. Evaluate data quality from the accuracy, completeness, uniqueness, consistency, accuracy, efficiency and timeliness seven aspects. And put forward the specific evaluation methods of each evaluation index. Then build a whole data quality evaluation process on this basis, quantitative analysis the data in the database, to acquaintance the data quality condition.
Sustainable land use plays a vital role in the process of regional development. To pursuit the sustainable use of land resources will be the effective approach to address the conflictions among farmland conservation, social development and environment protection. This paper reviewed the relevant research and studies on the field of sustainable land use including its various definitions, the sustainability evaluation and optimization of land resources, got some conclusions about the prospects in the study on sustainable land use and finally addressed the conceptual model for evaluating and optimizing sustainable land use.
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