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Dhamija Ajay K. Yadav Surendra S. Jain PK 《Environmental Economics and Policy Studies》2017,19(2):299-335
Environmental Economics and Policy Studies - Carbon management is a strategic priority and organizations need to forecast carbon for that. We aim to find out the best ARIMA-GARCH model for... 相似文献
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Masto RE Chhonkar PK Singh D Patra AK 《Environmental monitoring and assessment》2008,136(1-3):419-435
Soil quality assessment provides a tool for evaluating the sustainability of alternative soil management practices. Our objective
was to develop the most sensitive soil quality index for evaluating fertilizer, farm yard manure (FYM), and crop management
practices on a semiarid Inceptisol in India. Soil indicators and crop yield data from a long-term (31 years) fertilizer, manure,
and crop rotation (maize, wheat, cowpea, pearl millet) study at the Indian Agricultural Research Institute (IARI) near New
Delhi were used. Plots receiving optimum NPK, super optimum NPK and optimum NPK + FYM had better values for all the parameters
analyzed. Biological, chemical, and physical soil quality indicator data were transformed into scores (0 to 1) using both
linear and non-linear scoring functions, and combined into soil quality indices using unscreened transformations, regression
equation, or principal component analysis (PCA). Long-term application of optimum inorganic fertilizers (NPK) resulted in
higher soil quality ratings for all methods, although the highest values were obtained for treatment, which included FYM.
Correlations between wheat (Triticum aestivum L.) yield and the various soil quality indices showed the best relationship (highest r) between yield and a PCA-derived SQI.
Differences in SQI values suggest that the control (no NPK, no manure) and N only treatments were degrading, while soils receiving
animal manure (FYM) or super optimum NPK fertilizer had the best soil quality, respectively. Lower ratings associated with
the N only and NP treatments suggest that one of the most common soil management practices in India may not be sustainable.
A framework for soil quality assessment is proposed. 相似文献
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Effect of amendments on the extractability, retention and plant uptake of metals on a sewage-irrigated soil 总被引:1,自引:0,他引:1
Paulose B Datta SP Rattan RK Chhonkar PK 《Environmental pollution (Barking, Essex : 1987)》2007,146(1):19-24
Laboratory and greenhouse experiments were conducted to evaluate the effects of farmyard manure (FYM), CaCO(3) and single superphosphate (SSP) on retention and availability of Zn, Cu and Ni in sewage-irrigated soil. We also assessed the suitability of 0.05M EDTA for predicting the effectiveness of these amendments in reducing the phytoavailability of metals. Results indicated that EDTA could successfully predict the phytoavailability of Zn and Ni in amended soil, whereas it failed in case of Cu. By and large, application of CaCO(3), either alone or in combination with FYM had a positive effect on the retention of Zn, Cu and Ni in soil. Application of CaCO(3) alone or in combination with FYM was equally effective in reducing the Zn content in lettuce, whereas sole application of CaCO(3) significantly reduced Ni content. However, only SSP was found to be effective in reducing the Cu content in lettuce. 相似文献
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