Metadata Based Ecological Data Management And Information Sharing

As issues of ecological study tend to complicated and comprehensive, temporal and spatial scale of disquisitive object becoming larger and larger, the development of modern ecology is facing enormous challenges. Therefore, how to produce and obtain standardized data resources, how to store and manage massive data resources efficiently, and how to achieve the goal of ecological data management standardization and information sharing are current problems that must be solved urgently by ecological researchers.Main problems exist in current ecological scientific data management and information sharing was:data management level varies greatly, contradiction between automatic data collection and manual data entry, data update cycle is long and use of low efficiency, data formats and standards reunification, have a weak concept of sharing, the lack of metadata and not standardized, and so on. The existence of these issues caused users found it difficult to obtain data and seriously restrict scientific research and academic exchange activities.Based on data sets for the units, the field of scientific observations of key national research stations-in Chinese fir forest ecology at the historical data to organize, and metadata of ecological data and metadata based on national standards, the combination of Web database technology and Java programming language, developed based on metadata ecological data management system and information-sharing platform, and has achieved the following major conclusions:1. Metadata is data about data. It plays an important role in promoting data management and sharing. Appropriate metadata can help the ecological data producers and ecological data users to find data quickly that they needed to understand its content and restrictions, to assess their availability and thus access to and use of such data. Metadata is the key point for standardizing data management and achieving information sharing.2. Based on current national ecological metadata standards "metadata for ecological data", according to the "metadata subset—metadata entities—metadata elements" of the three-tier model to determine metadata UML model for relational datasets, including a total of seven modules: namely identification information module, site information module, method information module, quality information module, project information module, distribution information module and entity information module. 3. Ecological scientific data management is a fundamental work. Metadata based ecological scientific data management can not only solve the problems exist in Eco-DBMS, but will also achieve the goal of remote data and metadata reporting in the network environment.4. Information sharing platform was developed on the basis of metadata based ecological data management, then metadata of datasets was published. Not only the goal of metadata and other information sharing was achieved, but also achieved a cross-platform access and the classification of metadata retrieval and browsing.5. The goal of data sharing was achieved at the technical level, and ecological scientific data sharing platform was also established. In this paper, database and meta-database were linked up on the basis of ecological data management and information sharing, the goal of data application and download was initially achieved in the information sharing platform.