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基于Ｓｅｎｔｉｎｅｌ-２Ａ影像的ＯＰＴＲＡＭ模型及其改进模型的土壤水分估算研究

Authors :: 朱燕香
 潘剑君
 白浩然
 康翔
Source :: Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao. 2020, Vol. 43 Issue 3, p682-689. 8p.
Publication Year :: 2020
Abstract: [Ｏｂｊｅｃｔｉｖｅｓ]ＴｈｉｓｓｔｕｄｙｗａｓｔｏｅｘｐｌｏｒｅｔｈｅａｐｐｌｉｃａｂｉｌｉｔｙｏｆｔｈｅＯＰＴＩＣＡＬＴＲＡｐｅｚｏｉｄＭｏｄｅｌ( ＯＰＴＲＡＭ) ｆｏｒｓｏｉｌｍｏｉｓｔｕｒｅｅｓｔｉｍａｔｉｏｎｉｎＮａｎｊｉｎｇＬｕｈｅＤｉｓｔｒｉｃｔｕｔｉｌｉｚｉｎｇＳｅｎｔｉｎｅｌ-２ｉｍａｇｅｄａｔａ, ａｎｄｉｎｃｒｅａｓｅｔｈｅｓｏｉｌｍｏｉｓｔｕｒｅｒｅｔｒｉｅｖａｌａｃｃｕｒａｃｙｔｈｒｏｕｇｈｕｔｉｌｉｚｉｎｇｔｈｅｉｍｐｒｏｖｅｄＯＰＴＲＡＭ. [ Ｍｅｔｈｏｄｓ] Ｎｏｒｍａｌｉｚｅｄｄｉｆｆｅｒｅｎｃｅｖｅｇｅｔａｔｉｏｎｉｎｄｅｘ ( ＮＤＶＩ) ｉｎｔｈｅＯＰＴＲＡＭｗａｓｒｅｐｌａｃｅｄｗｉｔｈｔｈｅｐｈｏｔｏｓｙｎｔｈｅｔｉｃｖｅｇｅｔａｔｉｏｎｃｏｖｅｒａｇｅ, ｗｈｉｃｈｗａｓｏｂｔａｉｎｅｄｂｙｔｈｅＮＤＶＩ-ＤＦＩｍｏｄｅｌｄｅｃｏｍｐｏｓｉｎｇｔｈｅｍｉｘｅｄ-ｐｉｘｅｌｏｆＳｅｎｔｉｎｅｌ-２Ａｉｍａｇｅ. [Ｒｅｓｕｌｔｓ]ＴｈｅｉｎｖｅｒｓｉｏｎｅｆｆｅｃｔｏｆＯＰＴＲＡＭｓｏｉｌｍｏｉｓｔｕｒｅ(Ｒ２＝０.３８)ｗａｓｓｉｍｉｌａｒｔｏｔｈｅｆｉｔｔｉｎｇｒｅｓｕｌｔｏｆＴＶＤＩｍｅｔｈｏｄ(Ｒ２＝０.３９), ａｎｄｔｈｅｃｈａｒａｃｔｅｒｉｓｔｉｃｓｐａｔｉａｌｄｉｓｔｒｉｂｕｔｉｏｎｗａｓｔｒａｐｅｚｏｉｄａｌ; ｔｈｅＮＤＶＩ-ＤＦＩｍｏｄｅｌｗａｓｓｅｐａｒａｂｌｅｉｎＮａｎｊｉｎｇ; ｔｈｅｓｐａｔｉａｌｄｉｓｔｒｉｂｕｔｉｏｎｏｆＳＴＲ-ＦｐｖｏｆｔｈｅｉｍｐｒｏｖｅｄＯＰＴＲＡＭｍｏｄｅｌｃｏｎｆｏｒｍｅｄｔｏｔｈｅｄｉｓｔｒｉｂｕｔｉｏｎｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｔｈｅｂａｓｉｃｍｏｄｅｌ. Ｔｈｅｃｏｒｒｅｌａｔｉｏｎｃｏｅｆｆｉｃｉｅｎｔｏｆｔｈｅｉｍｐｒｏｖｅｄｍｏｄｅｌｗｉｔｈｔｈｅｍｅａｓｕｒｅｄ１０ｃｍｓｏｉｌｍｏｉｓｔｕｒｅｉｎｃｒｅａｓｅｄｔｏ０.５５. [Ｃｏｎｃｌｕｓｉｏｎｓ]ＴｈｅＯＰＴＲＡＭｈａｄａｇｒｅａｔｆｅａｓｉｂｉｌｉｔｙｏｎｔｈｅｒｅｔｒｉｅｖａｌｏｆｓｏｉｌｍｏｉｓｔｕｒｅｉｎＬｕｈｅＤｉｓｔｒｉｃｔｏｆＮａｎｊｉｎｇ. ＴｈｅｉｍｐｒｏｖｅｄＯＰＴＲＡＭｍｏｄｅｌｂａｓｅｄｏｎｔｈｅＮＤＶＩ-ＤＦＩｍｏｄｅｌｃｏｕｌｄｉｍｐｒｏｖｅｔｈｅｒｅｔｒｉｅｖａｌａｃｃｕｒａｃｙ, ｗｈｉｃｈａｌｓｏｃｏｕｌｄｂｅａｐｐｌｉｅｄｔｏｏｔｈｅｒｒｅｌａｔｅｄｍｏｄｅｌｓｉｎｔｈｅｆｕｔｕｒｅ. [ABSTRACT FROM AUTHOR]

Subjects :: *NORMALIZED difference vegetation index
*SOIL moisture
*STATISTICAL correlation

Details

Language :: Chinese
ISSN :: 10002030
Volume :: 43
Issue :: 3
Database :: Academic Search Index
Journal :: Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao
Publication Type :: Academic Journal
Accession number :: 144776312
Full Text :: https://doi.org/10.7685/jnau.201910012