Paddy crop monitoring using microwave remote sensing technique

Ewe, Hong Tat; Chuah, H. T.; Ismail, Ahmad; Loh, Kok-Khuan; Nasruddin, Nik

doi:10.1080/10106049509354498

Cited by 7 publications

(1 citation statement)

References 2 publications

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“…Often, the strengths of remotely sensed data lie in their abilities to detect soil reflectance (Baumgardner et al 1985, Elvidge and Lyon 1985, Frazier and Cheng 1989 including soil organic matter (Henderson et al 1989, Wilcox et al 1994, Ringrose et al 1996, 2002. Increasingly, emphasis is being placed on satellite sensor systems using active or passive radar to map specific features in wetland areas (Ewe and Church 1995). This is because the cloud-penetrating abilities of radar are useful in mapping wet season flooding.…”

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confidence: 98%

Use of remotely sensed data in the analysis of soil‐vegetation changes along a drying gradient peripheral to the Okavango Delta, Botswana

Ringrose

Jellema

Huntsman-Mapila

et al. 2005

International Journal of Remote Sensing

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This work determines the value of remotely sensed imagery in developing drying impacts which occur as a result of internal and/or external factors in the Okavango catchment. Three sites provide a preview of the consequences of Delta margin drying as depicted over historical, intermediate and geological timescales. Initially, supervised classification resulted in the identification of sequences of islands and flood plains and their associated vegetation cover on ETM + imagery, with a classification accuracy of 74-77%. Comparative results, augmented by patch analysis, suggest that through time, island woody vegetation cover has invaded the flood plains and locally developed protected ecotonal areas (extensions) which are densely treed, relative to adjacent, non-protected flood plains. Over longer time periods, protected areas between extensions became infilled with woody vegetation leading to, in effect, island enlargement or agglomeration. Disadvantages of long-term Delta drying in terms of natural resource management include a reduced availability of wetland-based construction and agricultural resources. If natural regeneration (island agglomeration) is allowed to take place, these resources may ultimately be replaced by dryland timber and potential cropland.

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