色季拉山石生藓类多样性及优势种成土与持水能力  

Diversity of epilithic mosses in Sejila Mountain and soil formation and water holding capacity of dominant species

作　　者：董营 张首超 卓嘎巴永 潘刚 王瑞红[1,2,3,4] DONG Ying;ZHANG Shouchao;ZHUO Gabayong;PAN Gang;WANG Ruihong(Research Institute of Tibet Plateau Ecology,Tibet Agriculture and Animal Husbandry University,Nyingchi 860000,Tibet,China;Key Laboratory of Forest Ecology of Tibet Plateau,Ministry of Education,Nyingchi 860000,Tibet,China;National Forest Ecosystem Observation&Research Station of Nyingchi Tibet,Nyingchi 860000,Tibet,China;Key Laboratory of Alpine Vegetation Ecological Security in Tibet,Nyingchi 860000,Tibet,China)

机构地区：[1]西藏农牧学院高原生态研究所,西藏林芝860000 [2]西藏高原森林生态教育部重点实验室,西藏林芝860000 [3]西藏林芝高山森林生态系统国家野外科学观测研究站,西藏林芝860000 [4]西藏自治区高寒植被生态安全重点实验室,西藏林芝860000

出　　处：《生态学杂志》2024年第6期1596-1603,共8页Chinese Journal of Ecology

基　　金：西藏自治区自然科学基金重点项目(XZ202301ZR0039G);西藏高原森林生态教育部重点实验室开放课题(XZA-JYBSYS-2023-15,XZA-JYBSYS-2023-03)资助。

摘　　要：通过野外调查和室内实验,对西藏林芝市色季拉山石生苔藓植物多样性进行了分析,并对该区域内的3种优势种的生物量、成土量、持水量等进行了测定。结果表明:石生藓类共8科12属16种,其中灰藓科(Hypnaceae)、羽藓科(Thuidiaceae)和曲尾藓科(Dicranaceae)为优势科,优势种为毛梳藓(Ptilium crista-castrensis)、棕色曲尾藓(Dicranum fuscescens)和锦丝藓(Actinothuidium hookeri);西藏色季拉山石生藓类优势种生物量为110.7~763.6 g·m^(-2),成土量为234.9~9063.3 g·m^(-2),最大持水量2164.5~8514.5 g·m^(-2),最大持水率169%~400%、自然持水量1984.74~6764.5 g·m^(-2)、自然持水率95%~318%。色季拉山石生藓类植物具有较好的成土和持水作用,可以有效防治水土流失,对保持水土具有重要意义。We investigated the diversity of epilithic mosses in Sejila Mountain of Nyingchi City,Tibet,and evaluated the biomass,soil formation capacity,and water holding capacity of three dominant species.The results showed that there were 8 families,12 genera and 16 species of epilithic mosses.Hypnaceae,Thuidiaceae,and Dicranaceae were the dominant families,while Ptilium crista-castrensis,Dicranum fuscescens,and Actinothuidium hookeri were the dominant species.Biomass of dominant species of epilithic mosses was 110.7-763.6 g·m^(-2),with a soil formation capacity of 234.9-9063.3 g·m^(-2),a maximum water holding capacity of 2164.5-8514.5 g·m^(-2),a maximum water holding rate of 169%-400%,a natural water holding capacity of 1984.74-6764.5 g·m^(-2),and a natural water holding rate of 95%-318%.Therefore,the epilithic mosses in Sejila Mountain play an important role in soil formation and water holding,which is of great significance for soil erosion control and also for soil and water conservation.

关 键 词：色季拉山 石生藓类植物 持水作用 成土功能 

分 类 号：S718.5[农业科学—林学]