中文摘要：

分析植被恢复过程中基材土壤肥力,为进一步改进生境基材性能、完善植被混凝土生态防护技术提供科学依据。在湖北省宜昌市选择清江水布垭电站公路边坡（S样地）、高坝洲电站进厂公路边坡（G样地）和三峡大学图书馆后边坡（T样地）等3个植被混凝土生态修复边坡,采用系统布点法,在坡面5~10 cm深度处取环刀样,对生境基材多年份（2007-2012年）土壤主要肥力因子进行定量测定,并采用T-S模糊神经网络模型对肥力水平进行综合评价分析。结果表明：有机质S样地由13.34 g/kg增加至32.89 g/kg,G样地由14.78 g/kg增加至35.02 g/kg,T样地在5.65~22.87 g/kg缓慢、波动增长;土壤全氮含量S样地0.12~2.27 g/kg,G样地0.13~1.64 g/kg,T样地0.08~0.84 g/kg;速效氮含量S样地23.94~170.87 mg/kg,G样地31.70~237.51 mg/kg,T样地20.88~122.28 mg/kg;全磷变化范围S样地2.30~2.66 g/kg,G样地1.64~2.06 g/kg,T样地1.63~2.18 g/kg;速效磷S样地2007、2009年异常丰富,均在300 mg/kg以上,其余年度为36.23~154.29mg/kg,G、T样地变化规律与S样地类似;速效钾G样地波动范围在59.87~207.03mg/kg,S样地、T样地波动幅度较小且总体处于丰富水平。各样地综合肥力指数随着监测时间的推移,总体是逐渐减小趋于稳定,综合肥力指数S样地3.14~2.69,G样地3.25~2.73,T样地3.47~2.74。总体上各样地综合肥力水平呈现先增长后稳定的发展趋势,肥力综合等级处于中等向上水平。

英文摘要：

Analysis of substrate soil fertility during the process of vegetation restoration provides a scientific basis for improving substrate soil performance and the vegetation concrete technique used for ecological restoration. In this study, we analyzed substrate soil fertility on three slopes where vegetated concrete was used for ecological resto- ration： a slope on the Shuibuya Power Station highway on Qingjiang River （Plot S, established April, 2000）, a slope on the Gaobazhou power station highway （Plot G, established March, 2002） and the slope behind the library of China Three Gorges University in Yiehang city, Hubei Province （Plot T, established March, 2004）. Soil sam- ples were collected at a depth of 5 - 10 cm using the cutting ring method and the major fertility （actors were deter- mined annually from 2007 to 2012. The substrate soil fertility was evaluated using a T-S fuzzy neural network and the dynamics and succession of substrate soil fertility were analyzed. The substrates used at the three experimental plots were of similar composition： For Plots S and T, the soil：concrete：organic matter： additive ratio was 100 ： 7.8 ： 5 ： 4.6 and, for Plot G, the ratio was 100 ： 8 ： 5 ： 5. From 2007 to 2012, the fertility factors of the soils were determined annually, including soil bulk density, organic matter, available nitrogen, total nitrogen, available phos- phorus, total phosphorus and available potassium. Soil organic matter increased from 13.34 g/kg to 32.89 g/kg in Plot S, from 14.78 g/kg to 35.02 g/kg in Plot G and, with fluctuation, from 5.65 to 22.87 g/kg in Plot T. In the same order of experimental plots （ S, G, T）, total nitrogen ranges were 0.12 - 2.27 g/kg, 0.13 - 1.64 g/kg and 0.08 -0.84 g/kg, while available nitrogen ranges were 23.94 - 170.87 mg/kg, 31.70 -237.51 mg/kg, 20.88 - 122.28 mg/kg and total phosphorus ranges were 2.30 -2.66 g/kg, 1.64 -2.06 g/kg, and 1.63 -2.18 g/kg. Rapidly available phosphorus in all three plots was unusually high in 2007 and 2009,