中文摘要：

土壤肥力质量是影响泥石流滩地土地利用和生态恢复的重要因素，为探究时间序列上泥石流滩地土壤肥力质量的演变趋势，采用嵌套设计方法选择近期（0-10年）、中期（10-20年）和早期（＞20年）泥石流滩地为处理样地，同时以近期泥石流堆积滩地作为对照样地，通过测定不同滩地的林地、耕地、草地和荒地土壤理化性质和土壤酶活性（共16种指标），并利用土壤肥力质量综合指数法对不同堆积时期滩地的各类土地利用方式土壤肥力质量进行研究. 结果显示：堆积时期和土地利用类型不同促使泥石流滩地土壤理化性质和土壤酶活性产生差异，土壤肥力质量综合指数表现出早期堆积滩地（0.54）＞中期堆积滩地（0.53）＞近期堆积滩地（0.31）的特征；近、中、早期滩地不同土地利用方式下土壤肥力质量评分均以耕地（46、82、83）和林地（47、79、75）最高，草地（26、42、41）次之，荒地（03、10、15）最低，且林地土壤肥力质量表现出退化的趋势. 本研究表明，随堆积时间增长，泥石流滩地土壤肥力质量提高，其变化速率先快后慢，但不合理的栽植和耕种可能导致泥石流滩地土壤肥力质量退化. 因此，加强土地利用方式优化和实施养分归还等对于泥石流滩地的持续利用和生态恢复具有重要意义.

英文摘要：

Soil fertility quality is a significant factor affecting sustainable land use and ecological restoration in debris flow waste-shoal land. This research aimed to study the soil fertility quality of the debris flow waste-shoal land deposited in different periods. The recent （0-10 a）, mid （10-20 a） and early （〉 20 a） debris flow waste-shoal land were selected as the treatment plots according to the nested design method, with the recent debris flow deposits land as the control plot at the same time. Integrated soil fertility quality evaluation method was used to study the soil fertility quality under different land use types （woodland, farmland, meadowland, and uncultivated land） in different deposit periods by measuring soil properties and soil enzyme activities （16 indexes）. The results showed difference in soil properties and soil enzyme activities of debris flow waste-shoal land under different deposit periods and land use types, with the integrated soil fertility quality value as： early deposit land （0.54） 〉 mid deposit land （0.53） 〉 recent deposit land （0.31）. The soil fertility quality value of farmlands and woodlands were the greatest, followed by the grasses, with uncultivated lands being the least under different land use types in early, mid and recent deposit land. The woodland soil fertility quality showed a trend to degenerate. This study showed that the soil fertility quality in debris flow waste-shoal land improves with the deposit time, first quickly then slowed down. But soil fertility quality may degenerate with improper planting and cultivation in debris flow waste-shoal land. Therefore, it is necessary to optimize land use types and implement nutrient return for sustainable waste-shoal use and ecological restoration in the debris flow waste-shoal land.