Climate Change Data Portal
| DOI | 10.1080/15481603.2023.2300214 |
| Landsat-observed changes in forest cover and attribution analysis over Northern China from 1996-2020 | |
| Liu, Xiaobang; Liang, Shunlin; Ma, Han; Li, Bing; Zhang, Yufang; Li, Yingying; He, Tao; Zhang, Guodong; Xu, Jianglei; Xiong, Changhao; Ma, Rui; Wu, Wenfu; Teng, Jiahua | |
| 发表日期 | 2024 |
| ISSN | 1548-1603 |
| EISSN | 1943-7226 |
| 起始页码 | 61 |
| 结束页码 | 1 |
| 卷号 | 61期号:1 |
| 英文摘要 | Forest dynamics provide important information on the ecological environment. The Three-North Shelter Forest Program (TNSFP) is one of the world's largest reforestation/afforestation programs, however the actual changes in forest cover in the Three-North Regions (TNR) of China resulting from this program are highly uncertain. This study quantified changes in fractional forest cover (FFC) at 30 m using Landsat data from 1996 to 2020. Using the Google Earth Engine platform, more than 40,000 images from Landsat-5, Landsat 7 and Landsat-8 were integrated, and the annual surface reflectance was normalized based on the multi-band least squares regression and maximum normalized difference vegetation index composite method. An ensemble learning model trained using high-resolution Gao-Fen 2 satellite imagery was used to generate the FFC long time-series product. FFC showed an increasing trend with average rates of 0.022/10a in the last 25 years, and 0.03/10a after 2010 largely corresponding to the fourth and fifth phases of the TNSFP. There are significant regional differences in the relationship between FFC and air temperature (${R<^>2}$R2 = 0.37) and precipitation (${R<^>2}$R2 = 0.49). The increased air temperature in arid and less rainy areas inhibit the FFC increase, whereas the increase in precipitation had a promoting effect. FFC appeared more sensitive to changes in solar radiation and heat conditions in humid and rainy areas. The attribution analysis revealed that 34% of FFC changes were caused by climatic variables and 66% were caused by non-climatic factors. Among them, afforestation associated with the TNSFP significantly increased FFC, and forest fire is a key factor of forest change in the Greater Khingan Ranges and Lesser Khingan Ranges regions. Planting single tree species caused biological disasters in forests of Xinjiang and Inner Mongolia. Further analysis of the increased FFC using high-level satellite products demonstrated an improvement in environmental conditions with cooler land surface temperature and higher vegetation gross primary production over the TNR. |
| 英文关键词 | Forests; Northern China; cover change analysis; climate variables; driver contribution rates; feedback effects |
| 语种 | 英语 |
| WOS研究方向 | Physical Geography ; Remote Sensing |
| WOS类目 | Geography, Physical ; Remote Sensing |
| WOS记录号 | WOS:001143052700001 |
| 来源期刊 | GISCIENCE & REMOTE SENSING
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/304643 |
| 作者单位 | Wuhan University; University of Hong Kong; Henan University; Henan University; Wuhan University |
| 推荐引用方式 GB/T 7714 | Liu, Xiaobang,Liang, Shunlin,Ma, Han,et al. Landsat-observed changes in forest cover and attribution analysis over Northern China from 1996-2020[J],2024,61(1). |
| APA | Liu, Xiaobang.,Liang, Shunlin.,Ma, Han.,Li, Bing.,Zhang, Yufang.,...&Teng, Jiahua.(2024).Landsat-observed changes in forest cover and attribution analysis over Northern China from 1996-2020.GISCIENCE & REMOTE SENSING,61(1). |
| MLA | Liu, Xiaobang,et al."Landsat-observed changes in forest cover and attribution analysis over Northern China from 1996-2020".GISCIENCE & REMOTE SENSING 61.1(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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