垫状驼绒藜群落特征及地理分布数据集  

A dataset describing the community characteristics and geographic distribution of Krascheninnikovia compacta

作　　者：崔家鹤 李智勇 王宇池[1,2,3] 孙蔷 莎娜 李紫晶 武艳涛 史亚博 韩瀛 李明乐 王立新 赵利清 梁存柱 Jiahe Cui;Zhiyong Li;Yuchi Wang;Qiang Sun;Na Sha;Zijing Li;Yantao Wu;Yabo Shi;Ying Han;Mingle Li;Lixin Wang;Liqing Zhao;Cunzhu Liang(School of Ecology and Environment,Inner Mongolia University,Hohhot 010021;Key Laboratory of Ecology and Resource Use of the Mongolian Plateau,Ministry of Education,Hohhot 010021;Collaborative Innovation Center for Grassland Ecological Security(Jointly Supported by the Ministry of Education and Inner Mongolia Autonomous Region),Hohhot 010021;College of Resources Environment and Tourism,Capital Normal University,Beijing 100048;Institute of Water Resources for Pastoral Area,Ministry of Water Resources,Hohhot 010020)

机构地区：[1]内蒙古大学生态与环境学院,呼和浩特010021 [2]蒙古高原生态学与资源利用教育部重点实验室,呼和浩特010021 [3]草原生态安全省部共建协同创新中心,呼和浩特010021 [4]首都师范大学资源环境与旅游学院,北京100048 [5]水利部牧区水利科学研究所,呼和浩特010020

出　　处：《生物多样性》2023年第10期140-146,共7页Biodiversity Science

基　　金：国家科技基础性专项(2011FY110300,2015FY210200);内蒙古自治区科技重大专项(2021ZD0011)。

摘　　要：垫状驼绒藜(Krascheninnikovia compacta)群落分布于人迹罕至的极端寒冷、干旱的高海拔地区,是青藏高原高寒荒漠最为典型且分布较广的植被类型。该群落已有的研究多为定性描述,均未提供珍贵的样方数据。本文以2018、2019及2022年野外调查数据和相关文献资料为基础,记录整理了垫状驼绒藜群落的空间分布、群落特征、群落结构及其气候等环境特征,构建了垫状驼绒藜群落数据集。数据集结果显示:(1)垫状驼绒藜群落主要分布在青藏高原的中昆仑山、北天山、阿尔金山、当金山山口;(2)垫状驼绒藜群落的高度、盖度、生物量和物种丰富度均相对较低,22个典型样地共记录到种子植物29种,分属11科22属;其生活型以地面芽植物居多,共18种,占植物总种数的62.07%,主要为多年生禾草和多年生杂类草;(3)群落结构简单,恒有度>50%的仅有垫状驼绒藜,灌木层、草本层都未出现次优势种,伴生种、偶见种居多(93.10%);(4)群落垂直结构可划分为2层,第一层是以垫状驼绒藜为主的稀疏垫状小半灌木,第二层是稀疏的草本层;(5)群落的生长环境具有气候寒冷、降水少且集中于最暖季的高寒荒漠气候特点。本数据集是国内目前已知唯一垫状驼绒藜群落数据集,是揭示垫状驼绒藜群落物种组成和结构等特征的重要凭证,数据集中的地理气候信息和群落物种信息可为垫状驼绒藜群落研究及《中国植被志》的编研提供基础数据。The Krascheninnikovia compacta community is primarily distributed in extremely cold and arid high-altitude environments typically inaccessible to humans.It represents the most common and widely distributed type of vegetation in the alpine deserts of the Qingzang Plateau.Most investigations into this community take the form of qualitative descriptions,which fail to provide precious sample data.In order to generate a community dataset of K.compacta,this paper recorded and organized the spatial distribution,community characteristics and structure,and climate characteristics of this species based on field survey data collected in 2018,2019,and 2022,along with a description of the relevant literature.The results showed that:(1)Krascheninnikovia compacta community was mainly found in the Central Kunlun Mountains of the Qingzang Plateau,the Northern Tianshan Mountains,the Altun Mountains,and the Dangjin Mountains Pass.(2)Krascheninnikovia compacta community had the relatively low values in community height,coverage,biomass and species richness.Our study identified 29 species of seed plants belonging to 11 families and 22 genera distributed among 22 typical plots.Hemicryptophytes were the dominant life form,with a total of 18 species,which accounted for 62.07%of all plants and primarily consisted of perennial grasses and perennial weeds.(3)The community structure was relatively simple due to only K.compacta having a consistent presence of more than 50%of all species.There were several subdominant species but mostly companion species and occasional species(93.10%)residing in the shrub layer and herb layer.(4)The vertical structure of the community can be divided into two layers.The first layer consists of a sparse cushioned small semi-shrub dominated by K.compacta,and the second layer consists of a sparse herb layer.(5)The growth environment of this community was characterized by a cold climate and little precipitation that is concentrated in the warmest quarter of the alpine desert climate.This dataset is the only known

关 键 词：垫状驼绒藜 空间分布 群落特征 多样性 

分 类 号：Q948.1[生物学—植物学]