National Dynamic Land Cover: Trend in the annual Enhanced Vegetation Index (EVI) from 2000 to 2008

## **Abstract** \n\nThis dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.\n\n\n\nThe Dynamic Land Cover Dataset of Australia is the first nationally consistent and thematically comprehensive land cover reference for Australia. It is the result of a collaboration between Geoscience Australia and the Australian Bureau of Agriculture and Resource Economics and Sciences, and provides a base-line for identifying and reporting on change and trends in vegetation cover and extent. The dataset comprises three trend datasets showing the change in behaviour of land cover across Australia for the period 2000 to 2008 and a digital copy of the technical report\n\n## **Dataset History** \n\nThis dataset was downloaded from the Geoscience Australia website (http://www.ga.gov.au/metadata-gateway/metadata/record/gcat_71071) May 1, 2015.\n\n\n\nThe following History statement is from the 'Trend Data Description' PDF document, saved within the dataset folder.\n\n\n\nEach of the three trends represents a different aspect of the photosynthetic behaviour of the vegetation within that pixel over a year. The trend data was calculated as the slope of the line for a linear regression of the annual minimum EVI values (lowest 3 EVI values for each year), annual maximum EVI values (highest 3 EVI values for each year) and annual mean EVI values (average of all EVI values for that year).\n\n## **Dataset Citation** \n\nGeoscience Australia (2015) National Dynamic Land Cover: Trend in the annual Enhanced Vegetation Index (EVI) from 2000 to 2008. Bioregional Assessment Source Dataset. Viewed 06 May 2016, http://data.bioregionalassessments.gov.au/dataset/f6951ba7-8968-4f64-9d38-1ed1a25785a0.

## 摘要
本数据集及其元数据声明由第三方提交至生物区域评估计划（Bioregional Assessment Programme），此处按原始提交格式完整呈现。
澳大利亚动态土地覆盖数据集（Dynamic Land Cover Dataset of Australia）是澳大利亚首个全国统一且主题覆盖全面的土地覆盖基准参考数据集。该成果由澳大利亚地质科学局（Geoscience Australia）与澳大利亚农业和资源经济科学局（Australian Bureau of Agriculture and Resource Economics and Sciences）合作完成，可为识别、报告植被覆盖与范围的变化及趋势提供基准基线。数据集包含三套趋势数据集，用以展示2000年至2008年间澳大利亚全域土地覆盖的变化特征，同时附带一份技术报告的数字副本。

## 数据集历史
本数据集于2015年5月1日从澳大利亚地质科学局官方网站（http://www.ga.gov.au/metadata-gateway/metadata/record/gcat_71071）下载获取。
以下历史声明源自数据集文件夹内的《趋势数据说明》（Trend Data Description）PDF文档：
三套趋势数据分别对应单年内各像素内植被的三类不同光合行为特征。趋势数据的计算方式为：对年度最小增强型植被指数（Enhanced Vegetation Index, EVI）值（每年选取最低的3个EVI数值）、年度最大EVI值（每年选取最高的3个EVI数值）以及年度平均EVI值（当年所有EVI数值的平均值）进行线性回归，以回归线的斜率作为最终趋势计算结果。

## 数据集引用
澳大利亚地质科学局（2015）《全国动态土地覆盖：2000-2008年年度增强型植被指数（EVI）变化趋势》，生物区域评估源数据集。查阅日期：2016年5月6日，http://data.bioregionalassessments.gov.au/dataset/f6951ba7-8968-4f64-9d38-1ed1a25785a0。