Perspective: Improving the accuracy of plant phenology observations and land-cover and land-use detection by optical satellite remote-sensing in the Asian tropics
Perspective: Improving the accuracy of plant phenology observations and land-cover and land-use detection by optical satellite remote-sensing in the Asian tropics
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DOI：
10.3389/ffgc.2023.1106723
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发表时间：
2023-02
期刊：
影响因子：
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通讯作者：
Nagai Shin;Chifuyu Katsumata;T. Miura;N. Tsutsumida;T. Ichie;A. Kotani;M. Nakagawa;K. L. Khoon;Hideki Kobayashi;T. Kumagai;S. Tei;R. S. Pungga;Taizo Yamada;Akihiro Kameda;Masayuki Yanagisawa;K. Nasahara;H. Muraoka;K. Ichii;Y. Tokumoto
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作者：
Nagai Shin;Chifuyu Katsumata;T. Miura;N. Tsutsumida;T. Ichie;A. Kotani;M. Nakagawa;K. L. Khoon;Hideki Kobayashi;T. Kumagai;S. Tei;R. S. Pungga;Taizo Yamada;Akihiro Kameda;Masayuki Yanagisawa;K. Nasahara;H. Muraoka;K. Ichii;Y. Tokumoto
卫星光学传感器的最新进展使亚洲热带生态系统的监测取得了重要进展，这些生态系统受到最近人类活动和气候变化的强烈影响。根据我们在印度尼西亚苏门答腊和马来西亚砂拉越婆罗洲进行的可行性分析，我们讨论了植物物候观测和土地覆盖和土地利用检测的现状，问题，最近的改进和未来的任务。我们发现，哨兵-2A/2B卫星上的多光谱仪器（MSI）具有10米的空间分辨率和5天的观测间隔，可用于监测树种之间的物候。对于Himawari-8地球静止卫星上的高级Himawari成像仪（AHI），空间分辨率为1，000米，观测间隔为10分钟，我们发现，植被指数的时间序列没有云污染造成的空白，可用于准确检测树种之间的物候时间和模式，尽管传感器的空间分辨率需要进一步改进。我们还发现并验证了在互联网上发布的具有地理位置信息的文本和图片以及历史现场记录可以用于过去和现在的土地覆盖和土地利用的地面实况。卫星上高频（≤ 10分钟）和高空间分辨率（≤ 10米）光学传感器的未来发展，预计将大大提高我们对热带亚洲生态系统的了解。
Recent advances in satellite-borne optical sensors led to important developments in the monitoring of tropical ecosystems in Asia, which have been strongly affected by recent anthropogenic activities and climate change. Based on our feasibility analyses conducted in Indonesia in Sumatra and Sarawak, Malaysia in Borneo, we discuss the current situation, problems, recent improvements, and future tasks regarding plant phenology observations and land-cover and land-use detection. We found that the Multispectral Instrument (MSI) on board the Sentinel-2A/2B satellites with a 10-m spatial resolution and 5-day observational intervals could be used to monitor phenology among tree species. For the Advanced Himawari Imager (AHI) on board the Himawari-8 geostationary satellite with a 1,000-m spatial resolution and 10-min observational intervals, we found that the time-series in vegetation indices without gaps due to cloud contamination may be used to accurately detect the timing and patterns of phenology among tree species, although the spatial resolution of the sensor requires further improvement. We also found and validated that text and pictures with geolocation information published on the Internet, and historical field notes could be used for ground-truthing land cover and land use in the past and present time. The future development of both high frequency (≤ 10 min) and high spatial resolution (≤ 10 m) optical sensors aboard satellites is expected to dramatically improve our understanding of ecosystems in the tropical Asia.