共查询到20条相似文献,搜索用时 31 毫秒
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Milton Leitenberg 《Biological conservation》1973,5(1):76-77
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Philippe C. Baveye 《European Journal of Soil Science》2021,72(4):1924-1927
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Water, Air, &; Soil Pollution - 相似文献
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《Soil & Tillage Research》1988,12(1):97-99
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Indranil Mukherjee Niladri Chakraborty T. K. Mandal 《Water, air, and soil pollution》2011,215(1-4):477-486
The paper reports the observations of the aerosol studies carried-out for three years (2004-2007) during the summers and winters at Kaikhali (22.0220 N & 88.6140E) lying in the east coast of India inside a special mangrove ecosystem: 'The Sundarbans'. Aerosol optical depths were measured using a five filter channel sunphotometer with wavelengths at 340, 500,870, 936 and 1020 nm respectively. The sampling site enjoys a tropical climate and is under the strong influence of the southwest or summer monsoon and weak northeast or winter monsoon. The mean aerosol optical depth (AOD) during the winters (2004-2007) for the filter channels 340, 500, 870, 936 and 1020 nm have been found to be 1.478, 1.014, 0.579, 0.541 and 0.523 respectively whereas for the summer periods, they have been found to be 1.173, 0.859, 0.603, 0.564 and 0.597 respectively. The mean values of the angstrom exponent calculated for the winter and summer months over the years 2004-2007 have been found to be 1.283, 0.999, 1.285 and 1.094, 1.167 and 1.91 respectively. Generally the higher angstrom exponent values during the winter periods over the years from 2004-2007 except for the year 2005-2006 indicate high ratio of smaller fractions to larger fractions. The values of Angstrom exponents observed at the site suggest that the aerosol comprise mostly of the small size particles. An attempt has been made in the paper to compare the aerosol optical depth and angstrom exponent values with another study conducted in a different coastal zone in India. 相似文献
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《Geoderma》1986,37(3):256-257
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《Biological conservation》1986,36(1):96-97
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