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| 论文编号: |
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| 论文题目: |
Landsat-Based Estimation of Mangrove Forest Loss and Restoration in Guangxi Province, China, Influenced by Human and Natural Factors |
| 英文论文题目: |
Landsat-Based Estimation of Mangrove Forest Loss and Restoration in Guangxi Province, China, Influenced by Human and Natural Factors |
| 第一作者: |
贾明明 |
| 英文第一作者: |
Jia, M. M. |
| 联系作者: |
王宗明 |
| 英文联系作者: |
Wang, Z. M. |
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| 发表年度: |
2015 |
| 卷: |
8 |
| 期: |
1 |
| 页码: |
311-323 |
| 摘要: |
Mangrove forest dynamics are undergoing constant changes because of both natural and anthropogenic factors. However, the rates and causes of loss and restoration remain largely unknown. This study aims to respond to this concern by analyzing the dynamics of mangrove forests and surrounding land covers in Guangxi Province, China. We analyzed Landsat images on a decadal scale between 1973 and 2010 using an object-oriented classification method. Temporal analysis results indicated that the areal extent of mangrove forests showed the following changes: a sharp decrease from 5305 ha in 1973 to 2306 ha in 1981; a remarkable increase from 2306 ha in 1981 to 5937 ha in 2000; and a slight degradation from 5937 ha in 2000 to 5759 ha in 2010. Reclamation and natural factors resulted in the loss of mangrove forests. By comparison, protection and reforestation efforts contributed to mangrove forest restoration. During the past 40 years, mangrove forests in Guangxi were fragmented. In contrast to the movement of other mangrove forests in the world, mangroves in the coasts of Guangxi were moved seaward because the rates of change in relative sea level were exceeded by the rates of change in the elevation of sedimentation in mangrove mudflats. Simultaneously, man-made land cover prevented landward migration. These results provide valuable information for better understanding mangrove forest dynamics in developing countries. These results can also be used as guidelines in the creation and implementation of reasonable mangrove forest management policies. |
| 英文摘要: |
Mangrove forest dynamics are undergoing constant changes because of both natural and anthropogenic factors. However, the rates and causes of loss and restoration remain largely unknown. This study aims to respond to this concern by analyzing the dynamics of mangrove forests and surrounding land covers in Guangxi Province, China. We analyzed Landsat images on a decadal scale between 1973 and 2010 using an object-oriented classification method. Temporal analysis results indicated that the areal extent of mangrove forests showed the following changes: a sharp decrease from 5305 ha in 1973 to 2306 ha in 1981; a remarkable increase from 2306 ha in 1981 to 5937 ha in 2000; and a slight degradation from 5937 ha in 2000 to 5759 ha in 2010. Reclamation and natural factors resulted in the loss of mangrove forests. By comparison, protection and reforestation efforts contributed to mangrove forest restoration. During the past 40 years, mangrove forests in Guangxi were fragmented. In contrast to the movement of other mangrove forests in the world, mangroves in the coasts of Guangxi were moved seaward because the rates of change in relative sea level were exceeded by the rates of change in the elevation of sedimentation in mangrove mudflats. Simultaneously, man-made land cover prevented landward migration. These results provide valuable information for better understanding mangrove forest dynamics in developing countries. These results can also be used as guidelines in the creation and implementation of reasonable mangrove forest management policies. |
| 刊物名称: |
Ieee Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| 英文刊物名称: |
Ieee Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
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| 英文参与作者: |
Wang, Z. M., Zhang, Y. Z., Ren, C. Y., Song, K. S. |
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