西沙群岛主要岛屿不同植被类型对土壤理化性质的影响  

Effect of Vegetation Types on Soil Physicochemical Property in East Island and Yongxing Island of Xisha Islands

作　　者：王森浩 朱怡静 王玉芳 毛鹏 刘楠[1] 简曙光[1] 朱丽薇[1] 刘慧[1] 张炜[1] WANG Sen-hao;ZHU Yi-jing;WANG Yu-fang;MAO Peng;LIU Nan;JIAN Shu-guang;ZHU Li-wei;LIU Hui;ZHANG Wei(Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, and Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院华南植物园,中国科学院退化生态系统植被恢复与管理重点实验室,广东省应用植物学重点实验室,广州510650 [2]中国科学院大学,北京100049

出　　处：《热带亚热带植物学报》2019年第4期383-390,共8页Journal of Tropical and Subtropical Botany

基　　金：国家重点研发计划项目(2016YFC1403002);中国科学院A类战略性先导科技专项(XDA13020500);广东省自然科学基金项目(2017A030313168)资助~~

摘　　要：为了解海岛植被恢复过程中植物群落对土壤理化性质的影响,对西沙群岛的永兴岛和东岛上不同植被群落的土壤主要理化性质进行测定。结果表明,随着岛屿植被由藤草经灌木向乔木群落的过渡,土壤含水量由5.9%显著升高至14.2%;土壤微生物生物量碳、生物量氮分别由176.2和41.2 mg kg^-1显著升高至391.5和98.8 mg kg^-1;而pH呈下降趋势。这表明随着植被的恢复,海岛土壤质量不断提高,生态系统渐趋稳定。In order to understand the effect of vegetation types on soil physicochemical property in Island, the soil physicochemical property in East Island and Yongxing Island of Xisha Islands under three vegetation types were determined. The results showed that in the processes of vegetation types from herbaceous and vines, shrubs to trees community, the soil water content increased significantly from 5.9% to 14.15%, and microbial biomass carbon and nitrogen also increased from 176.2 and 41.2 mg kg^-1 to 391.5 and 98.8 mg kg^-1, respectively.Meanwhile, the soil p H decreased with changes in vegetation types. So, it was suggested that soil quality in Islands enhanced gradually with vegetation recovery, and the island ecosystem became more stable.

关 键 词：西沙群岛 植被恢复 生态保护 植物群落 土壤 土壤微生物 

分 类 号：S153[农业科学—土壤学]