A spatial simulation model for karst rocky desertification combining top-down and bottom-up approaches
文献类型：期刊论文
| 作者 | Xu, Erqi; Zhang, Hongqi
|
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 29期号:10页码:3390-3404 |
| 关键词 | desertification restoration dynamics simulation model karst rocky desertification scenario setting spatial heterogeneity |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.3103 |
| 通讯作者 | Xu, Erqi(xueq@igsnrr.ac.cn) |
| 英文摘要 | Karst rocky desertification (KRD) is a serious ecological and environmental issue threatening southwestern China. The evolution of KRD calls for predicting its potential expansion or contraction, to support policy-making for combating KRD. A spatial model named SDKRD' for simulating KRD dynamics was developed in this study. The novelty of it is the ability to explore spatially local KRD evolution and integrate this information into a global estimation. The SDKRD model consists of three modules: a global KRD forecast and scenario setting, a local exploration of spatially varying effects of driving forces and neighbourhood influence on KRD evolution, and an iteration module for combining results of aforementioned modules. The SDKRD model was tested in the Changshun County as a case-study. The accuracy assessment confirmed a spatially visual consistency and a robust statistical result. Spatial KRD maps from 2010 to 2030 were simulated under three scenarios. The historical extrapolation scenario found a spatially global KRD reversion and locally scattered KRD deterioration. Different KRD restoration strategies under the other two scenarios could reverse the transformation of KRD classes at different magnitudes. Intermediate classes in the KRD evolution process could be more easily reversed. Under three scenarios with the increased strength of KRD management measures, areas of no KRD increased by 8.7%, 13.5%, and 16.6%, and areas of moderate KRD decreased by 38.3%, 53.0%, and 53.9%, respectively. SDKRD model presents specific KRD evolution trajectories and visualizes the KRD transformation at each location, which can help find cost-effective ways of combating KRD with differentiated strategies. |
| WOS关键词 | ECOLOGICAL RESTORATION PROJECTS ; HUMAN DRIVING FORCES ; MARKOV-CHAIN MODEL ; URBAN LAND-USE ; SOUTHWEST CHINA ; CELLULAR-AUTOMATA ; GUIZHOU PROVINCE ; VEGETATION ; GROWTH ; AREA |
| 资助项目 | National Natural Science Foundation of China[41601095] ; National basic Research Program of China[2015CB452702] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000447651700013 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China ; National basic Research Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/52807]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Erqi |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Erqi,Zhang, Hongqi. A spatial simulation model for karst rocky desertification combining top-down and bottom-up approaches[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(10):3390-3404. |
| APA | Xu, Erqi,&Zhang, Hongqi.(2018).A spatial simulation model for karst rocky desertification combining top-down and bottom-up approaches.LAND DEGRADATION & DEVELOPMENT,29(10),3390-3404. |
| MLA | Xu, Erqi,et al."A spatial simulation model for karst rocky desertification combining top-down and bottom-up approaches".LAND DEGRADATION & DEVELOPMENT 29.10(2018):3390-3404. |
入库方式： OAI收割
来源：地理科学与资源研究所
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