Rice-crawfish map in China
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'Integrated aquaculture systems, that is, systems involving the cocultivation of aquatic food with crops, provide high protein and energy outputs per unit of land and raise farm incomes. However, they can also cause substantial environmental problems, such as water and soil pollution. We used time series of satellite images to map the evolution of a new farming system integrating paddy rice production with crawfish cultivation from its implementation in 2013 to 2020 in five provinces (805,600 km2) in China. We used an object-based water difference method that integrates pixel-based identification with object-based segmentation. We first mapped the distribution of the water bodies by using the automated water extraction index and then extracted the integrated rice-crawfish area at the pixel level based on changes in the presence of water ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["remote sensing","rice-crawfish","spatial distribution"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Integrated aquaculture systems, that is, systems involving the cocultivation of aquatic food with crops, provide high protein and energy outputs per unit of land and raise farm incomes. However, they can also cause substantial environmental problems, such as water and soil pollution. We used time series of satellite images to map the evolution of a new farming system integrating paddy rice production with crawfish cultivation from its implementation in 2013 to 2020 in five provinces (805,600 km2) in China. We used an object-based water difference method that integrates pixel-based identification with object-based segmentation. We first mapped the distribution of the water bodies by using the automated water extraction index and then extracted the integrated rice-crawfish area at the pixel level based on changes in the presence of water ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Integrated aquaculture systems, that is, systems involving the cocultivation of aquatic food with crops, provide high protein and energy outputs per unit of land and raise farm incomes. However, they can also cause substantial environmental problems, such as water and soil pollution. We used time series of satellite images to map the evolution of a new farming system integrating paddy rice production with crawfish cultivation from its implementation in 2013 to 2020 in five provinces (805,600 km2) in China. We used an object-based water difference method that integrates pixel-based identification with object-based segmentation. We first mapped the distribution of the water bodies by using the automated water extraction index and then extracted the integrated rice-crawfish area at the pixel level based on changes in the presence of water 
remote sensing; rice-crawfish; spatial distribution