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The static chamber/gas chromatography method is adopted to observe the annual CO2 emissions of farmlands which have received different treatments of “returning mushroom residues to farmlands” in the rice-wheat rotational area in Chengdu Plain. The results showed that: (1) the CO2 emission amount from mushroom residues application in the wheat season is significantly lower than those from contrast...
Taking Dayi County, Sichuan Province for instance, this paper analyzes the land utilization change from 1995 to 2007, uses Xie Gaodi's ecosystem service value coefficients to assess the ecosystem service value of land utilization types in the region, and further analyzes the correlation between ecosystem service value and economic indicators. Results have proven that: during the target period, the...
In this study, with the paddy soil by different fertilized in Chengdu Plain, we have researched the correlation between soil cataloes, phosphates and unease activity and CH4 emission. The results showed that: (1) in the rice growth period, the Soil cataloes, phosphates and unease activity for each treatment got the trend that decreasing first and then increasing, decreasing finally. The soil cataloes,...
With the Tessier Five-step Continuous Extracting Method, the thesis studied the form distribution of heavy metals in the sediment samples collected from Mochou Lake, Xuanwu Lake and Qinhuai River in Nanjing, analyzed the correlation between leaching contents of heavy metals and various forms and between content of organic matter and leachability of heavy metals and between organic matter and organic...
In order to decrease the spectral distortion using the IHS-based fusion method and more effectively inject the spatial detail information of high spatial resolution images into the fused image, this paper presents a new image fusion method that combines the IHS transform with dual-tree complex wavelet transform. The proposed method can overcome the distortion of spectrum. Firstly, intensity-hue-saturation...
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