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Geospatial-temporal analysis of land-use changes in the Yellow River Delta during the last 40 years |
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| Authors: | Qinghua?Ye author-information" > author-information__contact u-icon-before" > mailto:yeqh@itpcas.ac.cn" title=" yeqh@itpcas.ac.cn" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,Gaohuan?Liu,Guoliang?Tian,Shenliang?Chen,Chong?Huang,Shupeng?Chen,Qingshen?Liu,Jun?Chang,Yanan?Shi |
| Affiliation: | 1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications (IRSA), Chinese Academy of Scienc (CAS), Beijing 100101, China;State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062,C 2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China 3. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications (IRSA), Chinese Academy of Scienc (CAS), Beijing 100101, China 4. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China 5. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications (IRSA), Chinese Academy of Scienc (CAS), Beijing 100101, China;Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China |
| Abstract: | Comprehensive study on land-use change of spatial pattern and temporal process is the key component in land use/land cover changes (LUCC) study nowadays. According to the theories and methods of Geo-information Tupu (Carto-methodology in Geo-information, CMGI) for geospatial and temporal analysis and integration models of spatial pattern and temporal processes in GIS, the paper puts forward Tupu methodology of land-use change and names the basic synthetic unit of spatial-temporal information Tupu unit. Tupu unit is the synthetic unit for geospatial-temporal analysis, which is synthesized by “space·attribute·process” features and composed of relatively homogeneous geographic unit and temporal unit. Based on the spatial features of 4 stages of land-use change in 1956, 1984, 1991, and 1996, a series of Tupu on land-use change in the Yellow River Delta (YRD) are created and studied in the paper, which includes 3 temporal units of spatial-temporal Tupu, process Tupu of land-use changes during the last 40 years, and reconstructions of a series of “arisen” Tupu, “arisen” process Tupu and pattern Tupu on land-use changes in the last 40 years by remapping tables of a reclassifying system. There are 3 methods of Tupu analysis on land-use change that are used to disclose change processes of land-use spatial conversion in YRD, such as spatial query and statistics, order of Tupu units by area and land-use conversion matrixes. In order to reveal the spatial pattern of land-use change processes, we analyze spatial-temporal changes of each Tupu above in various temporal units and spatial difference of pattern Tupu in the last 40 years by dynamic Tupu units. Tupu analysis on regional land-use is a promising trial on the comprehensive research of “spatial pattern of dynamic process” and “temporal process of spatial pattern” in LUCC research. The geo-information Tupu methodology would be a powerful and efficient tool on integrated studies of spatial pattern and temporal process in geoscience. |
| Keywords: | Geo-information Tupu spatial-temporal analysis the Yellow River Delta land-use changes Tupu Unit. |
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