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保护性耕作作为现代农业生产中对耕地最为重要的一种保护措施,在保护黑土地、提高和维持耕地质量以及改善区域生态环境等方面有着举足轻重的作用。秸秆覆盖在耕地表面能够减少风和水对土壤的侵蚀、增加土壤有机质的含量以及改善土壤的质量,减少黑土地的流失。秸秆覆盖度( crop residue cover,CRC) 是监测保护性耕作技术的关键指标,根据美国节能技术信息中心(Conservation Technol...
Developing accurate methods to map vegetation structure in tropical forests is essential to protect their biodiversity and improve their carbon stock estimation. We integrated LIDAR (Light Detection a...
Forest biomass plays an essential role in forest carbon reservoir studies, biodiversity protection, forest management, and climate change mitigation actions. Synthetic Aperture Radar (SAR), especially...
The ocean oil spills cause serious damage to the marine ecosystem. Polarimetric Synthetic Aperture Radar (SAR) is an important mean for oil spill detections on sea surface. The major challenge is how ...
Temporal monitoring of crop types is essential for the sustainable management of agricultural activities on both national and global levels. As a practical and efficient tool, remote sensing is widely...
In recent years, the quick upgrading and improvement of SAR sensors provide beneficial complements for the traditional optical remote sensing in the aspects of theory, technology and data. In this pap...
SAR polarimetry (PolSAR) is a method that can be used to investigate landslides. Polarimetric scattering power decomposition allows to separate the total power received by the SAR antenna, which is di...
Paddy rice is one of the most important crops in Japan and it needs much water to grow, especially for water reserves for paddy irrigation. The test site “Owari Seibu” doesn’t have enough irrigation...
Kim and van Zyl (2001) proposed a kind of radar vegetation index (RVI). RVI = 4*min(λ1, λ2, λ3) / (λ1 + λ2 + λ3) They modified the equation as follows. (2009) RVI = 8 * σ0 hv / (σ0 hh + σ0 vv +...
Rice is the most important cereal crop governing food security in Asia. Reliable and regular information on the area under rice production is the basis of policy decisions related to imports, export...
近年发射的1 m/3 m高分辨率合成孔径雷达(Synthetic Aperture RadarSAR)卫星为多云多雾地区土地利用动态遥感监测提供了重要数据源。为进一步检测高分辨率SAR卫星的适用性,采用对比分析和统计评价法,对TERRASAR、COSMO SkyMed、RADARSAT-2高分辨率SAR卫星中1 m聚束模式和3 m条带模式数据新增建设用地监测能力进行综合评价。结果表明,1 m聚束...
N-Substituted and N,N-disubstituted 2,4-dihydroxythiobenzamides were synthesized and their fungistatic properties were examined. The compounds were prepared by reacting sulfinyl-bis-(2,4-dihydroxyth...
基于RADARSAT SAR数据,利用MIMICS( Michigan Microwave Canopy Scattering)模型模拟森林组分(冠层、树干层、地表)雷达后向散射,模拟研究表明在稀疏的人工林地区,地表层与森林冠层的直接散射是影响森林总的后向散射中最重要的两个因素。在同样的地表条件与森林环境假设下,阔叶林的模拟结果与影像的一致性要优于针叶林,针叶林由于受到地形起伏的影响,难以利用模型...
基于RADARSAT SAR数据,利用MIMICS( Michigan Microwave Canopy Scattering)模型模拟森林组分(冠层、树干层、地表)雷达后向散射,模拟研究表明在稀疏的人工林地区,地表层与森林冠层的直接散射是影响森林总的后向散射中最重要的两个因素。在同样的地表条件与森林环境假设下,阔叶林的模拟结果与影像的一致性要优于针叶林,针叶林由于受到地形起伏的影响,难以利用模型...
从4500对SARⅡ628的双胚苗中筛选出5对二倍体三倍体双胚苗。SSR分析显示它们在所检测的310个位点上没有差异。以AFLP为基础的MSAP(methylationsensitive AFLP)研究显示,5个二倍体在493个位点上甲基化状态没有差异。与二倍体比较,相应的三倍体虽然在甲基化总体水平上变化不大,但共有29个位点甲基化类型在不同单株上发生了变异,表明SARⅡ628自然同源三...

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