Phenology windows and multi-source medium-/high-resolution image extraction for rice-crayfish paddy fields mapping
نویسندگان
چکیده
ç±äºæ¾èçç»æµæçåçææçï¼è¿å¹´æ¥ç¨»è¾å ±ä½æ¨¡å¼åå¸é¢ç§¯è¿ çæ©å¼ ãåç¡®è·å稻è¾ç°ç©ºé´åå¸ä¿¡æ¯ï¼å¯¹äºæ°´ç¨»ç§æ¤ç»æè°æ´ã产éä¼°ç®åæ°´èµæºç®¡çå ·æéè¦æä¹ãæ¬æ以âå°é¾è¾ä¹ä¹¡âââæ¹åçæ½æ±å¸ä¸ºç 究åºåï¼åºäºGoogle Earth Engineå¹³å°ååLandsat 7/8åSentinel-2å«ææ°æ®ï¼éè¿åæ稻è¾ç°çåä¸èä½ç®¡çåå£ç¸èå¾ç¹å¾ï¼æåäºç¨»è¾ç°åºå«å ¶ä»åä½ç©çå ³é®âæ°´æ·¹âä¿¡å·åâæ¤è¢«âä¿¡å·ãåºäºå®å°ç¨»è¾ç°æ ·æ¬ç»è®¡åæå ³é®ç¹å¾çéå¼ï¼æ建稻è¾ç°è§åéè¯å«æ¨¡åï¼æåäºæ¹åçæ½æ±å¸2019年稻è¾ç°ç©ºé´åå¸ãæåï¼åºäºå®å°æ ·æ¬éªè¯è¯¥ç©åçªå£ç¹å¾æ¹æ³ç精度ï¼å¹¶è¯ä¼°åæ¯è¾äºè¯¥æ¹æ³ä¸éæºæ£®æååºäºæ°´ä½å£ç¸å·®å¼æ¹æ³ç表ç°ãç»æ表æï¼ç©åçªå£1æ1æ¥â4æ30æ¥å ç水淹信å·ï¼LSWI>NDVIæEVIï¼ãç©åçªå£7æ15æ¥â9æ30æ¥å çæ¤è¢«ä¿¡å·ï¼NDVIæEVI>LSWIï¼åç©åçªå£11æ10æ¥â12æ31æ¥å ç水淹信å·æ¯ç¨»è¾ç°é¥æè¯å«çå ¸åç¹å¾ãåºäºè¯¥æ¹æ³æåç2019å¹´æ½æ±å¸ç¨»è¾ç°å¶å¾ç²¾åº¦åç¨æ·ç²¾åº¦åå«ä¸º90.74%ã94.69%ï¼æ¾èé«äºæ°´ä½å£ç¸å·®å¼æ¹æ³åéæºæ£®ææ¹æ³ç精度ãåºäºå ³é®ç©åçªå£ç稻è¾ç°æåæ¹æ³å ·æè¾é«çæ³åè½åï¼è½ä»¥è¾å°çå®å°æ ·æ¬è¿è¡æ¶ç©ºå°ºåº¦ç延å±ï¼ä»è为大尺度é¿æ¶åºç¨»è¾ç°é¥æå¶å¾æä¾éè¦çæ¹æ³æ¯æã
منابع مشابه
Mapping Paddy Rice Agriculture using Multi-temporal FORMOSAT-2 Images
Most paddy rice fields in East Asia are small parcels, and the weather conditions during the growing season are usually cloudy. FORMOSAT-2 multi-spectral images have an 8-meter resolution and one-day recurrence, ideal for mapping paddy rice fields in East Asia. To map rice fields, this study first determined the transplanting and the most active tillering stages of paddy rice and then used mult...
متن کاملMethane and nitrous oxide emissions from rice paddy fields
Recent field studies in rice paddy fields in Japan and China have shown that N2O is emitted to the atmosphere not only after the application of nitrogen fertilisers under flooded conditions but also in a period from the final drainage to submergence in the following rice-growing season through nitrification or denitrification. Those results clearly indicate that CH4 and N2O emissions in rice pa...
متن کاملHigh Resolution Image with Multi-wall Carbon Nanotube Atomic Force Microscopy Tip (RESEARCH NOTE)
In this paper, a simple and reproducible approach for attaching the multi-wall carbon nanotubes (MWNTs) to the apex of the atomic force microscope probe has been proposed. For this purpose, the dielectrophoresis method was applied due to its simple performance, cheapness and reliability. In this method, various parameters such as voltage, frequency, concentration of carbon nanotubes solution an...
متن کاملMapping paddy rice distribution using multi-temporal Landsat imagery in the Sanjiang Plain, northeast China.
Information of paddy rice distribution is essential for food production and methane emission calculation. Phenology-based algorithms have been utilized in the mapping of paddy rice fields by identifying the unique flooding and seedling transplanting phases using multi-temporal moderate resolution (500 m to 1 km) images. In this study, we developed simple algorithms to identify paddy rice at a f...
متن کاملAn Object-Based Paddy Rice Classification Using Multi-Spectral Data and Crop Phenology in Assam, Northeast India
Rice is the staple food for half of the world’s population. Therefore, accurate information of rice area is vital for food security. This study investigates the effect of phenology for rice mapping using an object-based image analysis (OBIA) approach. Crop phenology is combined with high spatial resolution multispectral data to accurately classify the rice. Phenology was used to capture the sea...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of remote sensing
سال: 2022
ISSN: ['1007-4619', '2095-9494']
DOI: https://doi.org/10.11834/jrs.20211070