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Assessing Agricultural Drought in Natural Rubber Plantations Using MODIS/Terra Satellite Data
Mati S. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Assessing Agricultural Drought in Natural Rubber Plantations Using MODIS/Terra Satellite Data
ผู้แต่ง / หัวหน้าโครงการ (EN): Mati S.
บทคัดย่อ (EN): Drought assessment and monitoring are important in the management of a crop particularly in the context of global warming and climate change. Rubber being a perennial crop goes through periods of moisture deficits during different phases of its growth. Realor near real time drought monitoring is required for adopting proper management strategies to mitigate the adverse effects of drought. Satellite-based remote sensing techniques are increasingly becoming handy in assessing and monitoring drought in many crops. Severe drought during the summer season results in appreciable reduction in growth and yield in natural rubber. In the present study, an attempt has been made to identify the spatial extent of agricultural drought stress in natural rubber plantations of Kerala and Kanyakumari district of Tamil Nadu using satellite based remote sensing data and GIS. By combining remotely sensed land surface reflectance and thermal properties from Terra MODIS, changes in land surface temperature (LST) and normalized differential vegetation index (NDVI) over a region is estimated. Vegetation temperature condition index (VTCI), derived from the association between NDVI and LST gives an estimate of the temperature status of the vegetation for a given NDVI which is an indirect reflection of the soil moisture status. Our results indicate that VTCI is a powerful proxy estimate of the drought stress rubber plantations experience during peak summer season in Kerala and Kanyakumari district of Tamil Nadu.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): GIS
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
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Assessing Agricultural Drought in Natural Rubber Plantations Using MODIS/Terra Satellite Data
Mati S.
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
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