西南林业大学学报2018，Vol.38Issue(3)：116-122,7.DOI:10.11929/j.issn.2095-1914.2018.03.017
退耕植被演替过程中土壤团聚体与胶结物质的协同响应
Synergetic Response of Soil Aggregates and Binding Agents in the Process of Vegetation Restoration Succession
摘要
Abstract
Taking Maowangou Basin in Shaanxi as the research area. Field survey and laboratory experiment were conducted to study the coordinated variation between soil aggregate stability and soil aggregate binding agents (soil organic carbon (SOC), glomalin-related soil protein (GRSP)) during vegetation succession of abandoned cropland in Loess hilly area. The results showed that vegetation succession of abandoned cropland increased>5 mm wet-sieved aggregate fractions, decreased 0.25-2 mm wet sieved aggregate fractions, and thus significantly in-creased aggregate mean weight diameter (MWD). Soil aggregate-associated SOC, easily extractable GRSP (EE-GRSP),and total GRSP (T-GRSP) all showed an increasing trend with the abandoned duration.Correlation analy-sis showed that different aggregate binding agents were obviously correlated with each other.MWD were significantly positively correlated with SOC and T-GRSP in>5 mm and<5 mm wet sieved aggregate fractions,respectively. Dur-ing the succession of vegetation in the returning farmland in loess hilly region,the increase of SOC and GRSP con-tent synergistically improved the stability of soil aggregates.关键词
植被演替/土壤团聚体/有机碳/球囊霉素相关土壤蛋白/黄土丘陵区Key words
vegetation succession/aggregate/organic carbon/glomalin-related soil protein/loess hilly-gully region分类
农业科技引用本文复制引用
袁瀛,肖列..退耕植被演替过程中土壤团聚体与胶结物质的协同响应[J].西南林业大学学报,2018,38(3):116-122,7.基金项目
国家自然科学基金项目(41330858,41471226,L1624052)资助 （41330858,41471226,L1624052）
陕西省自然科学基础研究计划项目(2016JM4017)资助 （2016JM4017）
陕西省水利科技项目(2017slkj-22)资助. （2017slkj-22）
