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Urban green space plays an important and positive role in global carbon cycle, and it is very important for improving the ecological environment of the city, reducing the urban heat island effect, promoting the harmonious relationship between human and nature. In order to overcome the disadvantages of the existing method to extract green space information and solve the problem that consume much time...
Precision nitrogen (N) management requires real-time diagnosis of crop N status, and recommends N application rates accordingly. Nitrogen nutrition index (NNI) has been proposed as a better indicator of crop N status, but it is not suitable for practical applications, because it requires destructive plant sampling and time-consuming analysis of plant N concentration. There has been increasing interest...
The fraction of absorbed photosynthetically active radiation (FPAR) is a key biophysical variable that can be used to derive agronomic information for crop condition monitoring and yield prediction. Vegetation indices have been proved to be a useful method for FPAR estimation. However, most vegetation indices have their own limitations and can decrease the sensitivity to FPAR. The object of this study...
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