湖南祁阳县土壤酸化主要驱动因素贡献解析
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周海燕,徐明岗,蔡泽江,文石林,吴红慧
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Quantitative Analysis of Driving-Factors of Soil Acidification in Qiyang County, Hunan Province
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ZHOU HaiYan,XU MingGang,CAI ZeJiang,WEN ShiLin,WU HongHui
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表7 不同土地利用类型的关键致酸过程的H+产生量
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Table 7 H+ production of acidity-inducing factors among the different land use patterns
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利用类型 Land use pattern | 氮循环 N cycling process | 盐基吸收 BC uptake | 酸雨 Acid deposition | 总H+产量 Total H+ production (kmol·hm-2·a-1) | 磷吸收 P uptake (kmol·hm-2·a-1) | H+净产量 H+ net production (kmol·hm-2·a-1) | H+产量 H+ production (kmol·hm-2·a-1) | 贡献率 Contribution (%) | H+产量 H+ production (kmol·hm-2·a-1) | 贡献率 Contribution (%) | H+产量 H+ production (kmol·hm-2·a-1) | 贡献率 Contribution (%) | 林地 Forest soil | 2.2 | 68.2 | 1.0 | 30.1 | 0.056 | 1.7 | 3.2 | -0.05 | 3.2 | 水田Paddy | 11.5 | 65.3 | 6.1 | 34.4 | 0.056 | 0.3 | 17.6 | -1.1 | 16.5 | 旱地Upland | 13.6 | 68.8 | 6.1 | 30.9 | 0.056 | 0.3 | 19.7 | -0.7 | 19.0 | 全县* Whole county | 7.3 | 66.5 | 3.6 | 33.0 | 0.056 | 0.5 | 10.9 | -0.5 | 10.4 |
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