西南林业大学学报2018，Vol.38Issue(2)：76-82,7.DOI:10.11929/j.issn.2095-1914.2018.02.012
岩溶山地不同植被恢复模式和年限土壤养分的变化
Changes of Soil Nutrients Under Different Vegetation Restoration Patterns and Age Limit in Karst Mountain
摘要
Abstract
In 2002,2005,2009,and August 2016,soil samples from the upper, middle and lower parts of 11 fixed vegetation restoration sites in Fadou were determined by 4 surveys.The changes of 11 kinds of vegetation of different species of tree(grass) and the changes of soil nutrients and restoration of forestland under restoration years were analyzed. The results showed that along the 14 years succession,there was close correlation between restora-tion time and soil nutrient parameters such as organic matter, available N, available P, available K and pH. Soil organic matter content increased significantly after vegetation restoration and restoration effect was obvious. Soil a-vailable N content can also be significantly restored. The content of available P in soil was changed slowly, in-creased rapidly and then decreased,and the content of available P in soil was not recovered obviously. Soil K con-tent showed a"slow down-sharp drop-slow increase"changes, the recovery effect was not obvious. After 7 years, the soil pH value showed a clear downward trend. After 14 years,the soil pH value in the woodland was effectively reduced and stabilized. Restricted nutrient available P and available K recoveried significantly lag behind the recov-ery of organic matter and available N,indicating that restrictive nutrients to be significantly restored to take longer. Based on the change and restoration of soil nutrients in the course of vegetation restoration, 6 species of fragrant wood,such as Manglietia aromatica+Cupressus lusitanica and Pistacia weinmannifolia,were optimized for artificial vegetation restoration in Yunnan karst mountainous areas.关键词
岩溶山地/植被/恢复/模式/年限/土壤养分Key words
karst mountainous area/vegetation/restoration/patterns/age limit/soil nutrient分类
农业科技引用本文复制引用
常恩福,李娅,李品荣,侬时增,刘永国,王竣..岩溶山地不同植被恢复模式和年限土壤养分的变化[J].西南林业大学学报,2018,38(2):76-82,7.基金项目
国家重点研发计划项目子课题(2016YFC0502504)资助 （2016YFC0502504）
中央财政林业科技推广示范资金项目([2015] TZYN11)资助. （[2015] TZYN11）
