生态学杂志2018，Vol.37Issue(1)：17-25,9.DOI:10.13292/j.1000-4890.201801.028
晋西黄土区陡坡植被自然恢复评价
Evaluating natural restoration of vegetation on steep slopes in the Loess Plateau, Shanxi Province
摘要
Abstract
To understand the restoration status of vegetation on steep slopes above 35°,with the application of RS and GIS tools,100 plots with different aspects on steep slopes of Caijiachuan watershed in Jixian County of Shanxi Province were selected.On the basis of division of site types,vegetation coverage,community restoration degree (RD) and restoration speed (RS) in different habitats of steep slope were analyzed by using the method of spatial sequence instead of time succession.The results showed that steep slopes could be divided into 3 groups of site types according to different slopes,i.e.group Ⅰ (35 °-45 °),group Ⅱ (45 °-55 °) and group Ⅲ (＞55°).Coverage and biomass of groups Ⅰ and Ⅱ were obviously different from group Ⅲ (P＜0.05).According to community RD and vegetation succession,recovery process was divided into early,middle and late stages.There were highest RS but lowest RD in the early stage;the moderate RD and RS in the middle stage;the slowest RS and the highest RD in the late stage.The natural restoration strategy was different for the three site types,and the RD was the highest in the early stage for both groups Ⅰ and Ⅱ,while the RD was the highest in late stage for group Ⅲ.The RD reached up to 0.8 for both groups Ⅰ and Ⅱ;for group Ⅲ,the maximum RD was only 0.5,and the effect of natural vegetation restoration was not obvious.关键词
植物群落/自然恢复/覆盖度/恢复度/黄土区Key words
vegetation community/natural restoration/coverage/restoration degree/loess area引用本文复制引用
陈宝强,张建军,赵荣玮,孙若修,李梁,茹豪,王雅琼..晋西黄土区陡坡植被自然恢复评价[J].生态学杂志,2018,37(1):17-25,9.基金项目
国家科技支撑计划课题(2015BAD07B02)和国家“十二五”科技支撑计划项目(2015BAD07B00)资助. （2015BAD07B02）
