湖南祁阳县土壤酸化主要驱动因素贡献解析

周海燕,徐明岗,蔡泽江,文石林,吴红慧

Quantitative Analysis of Driving-Factors of Soil Acidification in Qiyang County, Hunan Province

ZHOU HaiYan,XU MingGang,CAI ZeJiang,WEN ShiLin,WU HongHui

表10 祁阳小麦-玉米长期试验田的土壤缓冲性能及年度理论氢离子产生量

Table 10 Soil buffer capacity and H⁺ net production of wheat-corn long-term experiment in Qiyang County

年份 Year	y = a - bx			H⁺净产量 H⁺ net production (kmol·hm^-2·a^-1)
年份 Year	a	b	R²	H⁺净产量 H⁺ net production (kmol·hm^-2·a^-1)
1991	5.70	0.0602	0.9698	5.02
1992	5.60	0.0631	0.9639	5.02
1993	5.40	0.0610	0.9855	5.02
1994	5.26	0.0650	0.9566	5.02
1995	5.30	0.0593	0.9551	5.02
1996	5.20	0.0701	0.9270	4.51
1997	4.60	0.0601	0.9359	4.51
1998	4.60	0.0603	0.9728	4.51
1999	4.30	0.0489	0.9639	4.51
2000	4.20	0.0400	0.9229	4.51
2001	4.30	0.0393	0.9566	3.76
2002	4.32	0.0593	0.9889	3.76
2003	4.31	0.0434	0.9387	3.76
2004	4.60	0.0439	0.9855	3.76
2005	4.46	0.0383	0.9591	3.76
2006	4.48	0.0292	0.9852	3.20
2007	4.33	0.0489	0.9607	3.20
2008	4.53	0.0373	0.9229	3.20
2009	4.50	0.0383	0.9579	3.20
2010	4.30	0.0312	09851	3.20
2011	4.38	0.0292	0.9889	3.11
2012	4.30	0.0219	0.9589	3.11