本数据包含了1970年代、1990年代、2000年、2010年塔里木河流域土地利用/覆盖数据。遥感数据处理时以几何纠正后的1：10万栅格地形图为地理基础，对影像进行精纠正，土地覆盖信息提取利用eCongnition软件建立分类规则及分类器，对图像进行分析判读，最终获得土地覆盖类型图。其它时期影像采用与ETM影像匹配的方法进行纠正，土地覆盖信息提取利eCongnition软件建立分类规则及分类器，对图像进行分析判读，最终获得土地覆盖类型图。", "ds_source": "
土地利用/覆盖提取所采用的遥感数据为Landsat MSS和TM/ETM数据，多光谱数据纠正后的影像采用432波段假彩色合成。
", "ds_process_way": "2010年代土地覆盖信息提取采用春、夏、秋、冬四季HJ－1数据及同年的TM数据提取。 2005年、2000年、1990年土地覆盖信息提取时，先选择本时段与2010年代时相最近的数据进行影像动态检测生成动态差异影像，然后对动态变化影像进行分类规则和分类器建立，参照地形图和其它相关资料，分类动态差异生态动态变化数据，最后利用动态变化数据恢复重建当期土地覆盖数据。
", "ds_quality": "1.原始资料数据精度 严格按照仪器操作规范进行观测和数据采集，纠正后的图像满足同名像元误差平原地区小于1个像元，山区小于2个像元。", "ds_acq_start_time": "1970-01-01 00:00:00", "ds_acq_end_time": "2010-01-01 00:00:00", "ds_acq_place": "新疆塔里木河流域", "ds_acq_lon_east": 95.0, "ds_acq_lat_south": 35.0, "ds_acq_lon_west": 75.0, "ds_acq_lat_north": 45.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 11278785, "ds_files_count": 3, "ds_format": "adf", "ds_space_res": null, "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "采用Albers等面积投影。", "ds_thumbnail": "9d748598-c521-4557-abcb-f70a861da112.jpg", "ds_thumb_from": 2, "ds_ref_way": "颜长珍, 常存，西北干旱区典型区塔里木河流域1：10万土地利用/覆盖数据集(1970、1990、2000、2010年)，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.973Desert.db0020.2020", "paper_ref_way": "", "ds_ref_instruction": "使用本数据集时，请在文章中引用以下文献：\n[1]包安明, 陈云浩, 史建康, 刘海隆. 干旱区不同土地利用类型的时空分形特征研究——以塔里木河干流区域为例. 2009，干旱区地理，32(5):761-768. \n[2] 黄莹，包安明，刘海隆，冯先伟，杨光华。基于绿洲土地利用的区域GDP公里格网化研究，冰川冻土，2009,31（1）：158-165.\n[3] 杨光华，包安明，冯先伟，黄 莹，张红利.气候和土地利用变化对塔河干流市县植被覆盖变化的影响分析. 2010，中国沙漠，30(6):1389-1397.\n[4]Bao An-ming, Yang Guang-hua, Liu Hai-long, and Liu Ying. Evaluation of Wind Erosion in Xinjiang Based on Grid Method. 2012, Soil Science , 177(1):69-77.\n[5]白泽龙; 包安明; 赵金; 章毅; 郭春红. 艾比湖流域近40年来土地利用与覆被动态变化研究. 2012, 水土保持通报, 32(2):172-178.\n", "ds_from_station": null, "organization_id": "eb2b3ac4-919d-433d-b987-bcee1ae83c9e", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-12-21 09:55:39", "last_updated": "2020-12-21 09:55:39", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.973Desert.2020.147", "license": null, "i18n": { "en": { "title": "1:100000 land use / cover data set of Tarim River Basin in Northwest China (1970, 1990, 2000, 2010)", "ds_format": "", "ds_source": "
LANDSAT MSS and TM / ETM data are used for land use / cover extraction, and 432 band false color synthesis is used for multi spectral data correction.
", "ds_quality": "1. The accuracy of the original data data is observed and collected in strict accordance with the instrument operation specifications. The corrected image meets the requirements of the same pixel error. The error of plain area is less than 1 pixel, and that of mountain area is less than 2 pixels.", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "年", "ds_acq_place": "Tarim River Basin, Xinjiang", "ds_space_res": "", "ds_projection": "", "ds_process_way": "
In 2010, HJ-1 data of spring, summer, autumn and winter and TM data of the same year were used to extract land cover information. When extracting the land cover information in 2005, 2000 and 1990, the data of this period and 2010's are selected for dynamic detection to generate dynamic difference image. Then, classification rules and classifiers are established for dynamic change images. Referring to topographic map and other relevant data, dynamic difference ecological dynamic change data are classified. Finally, dynamic change data is used to recover the dynamic difference image Land cover data of the current construction period.
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "土地利用", "土地覆盖", "landsat", "1：50万" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "塔里木", "新疆塔里木流域" ], "ds_time_tags": [ 1970, 1990, 2000, 2010 ], "ds_contributors": [ { "true_name": "颜长珍", "email": "yancz@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "常存", "email": "changc@ms.xjb.ac.cn", "work_for": "中国科学院新疆生态与地理研究所", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "颜长珍", "email": "yancz@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "常存", "email": "changc@ms.xjb.ac.cn", "work_for": "中国科学院新疆生态与地理研究所", "country": "中国" } ], "ds_managers": [ { "true_name": "王涛", "email": "wangtao@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "颜长珍", "email": "yancz@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "常存", "email": "changc@ms.xjb.ac.cn", "work_for": "中国科学院新疆生态与地理研究所", "country": "中国" } ], "category": "沙漠与荒漠化" }