共和盆地塔拉滩不同类型草地群落组成与土壤特性

共和盆地塔拉滩草原植被3个代表性植物群落是短花针茅＋青海固沙草群落、芨芨草群落和川青锦鸡儿灌丛群落.在19个样地95个样方植被群落和土壤调查的基础上,分析3个不同群落结构及土壤质地和养分含量变化特征,调查样地共出现植物32种,其中,川青锦鸡儿灌丛草地出现植物11种,芨芨草草地22种,青海固沙草草地21种.群落生物量和盖度表现为芨芨草草地显著大于青海固沙草草地,青海固沙草草地又显著大于川青锦鸡儿灌丛草地,青海固沙草是3类草地的优势种.0～20 cm的土壤粒度组成以细砂粒为主.川青锦鸡儿灌丛群落全N、P、K含量比青海固沙草草地和芨芨草草地的高,表现出明显表聚现象.芨芨草群落土壤有机质含量低,并有弱...

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Published in林业科学研究 Vol. 28; no. 3; pp. 346 - 351
Main Author 王学全 尹书乐 杨占武 卢琦 杨恒华 陈琦
Format Journal Article
LanguageChinese
Published 中国林业科学研究院荒漠化研究所,北京,100091%青海省林业科学研究所,青海西宁,830001%青海共和荒漠生态系统定位观测研究站,青海共和,813005 2015
Subjects
共和盆地
土壤养分
群落结构
草地
土壤养分
共和盆地
soil nutrient
草地
Gonghe Basin
community composition
grassland
群落结构
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ISSN1001-1498

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Summary:共和盆地塔拉滩草原植被3个代表性植物群落是短花针茅＋青海固沙草群落、芨芨草群落和川青锦鸡儿灌丛群落.在19个样地95个样方植被群落和土壤调查的基础上,分析3个不同群落结构及土壤质地和养分含量变化特征,调查样地共出现植物32种,其中,川青锦鸡儿灌丛草地出现植物11种,芨芨草草地22种,青海固沙草草地21种.群落生物量和盖度表现为芨芨草草地显著大于青海固沙草草地,青海固沙草草地又显著大于川青锦鸡儿灌丛草地,青海固沙草是3类草地的优势种.0～20 cm的土壤粒度组成以细砂粒为主.川青锦鸡儿灌丛群落全N、P、K含量比青海固沙草草地和芨芨草草地的高,表现出明显表聚现象.芨芨草群落土壤有机质含量低,并有弱盐渍化,土壤可溶性盐含量达0.26 ms·cm-1.群落植被和土壤系统的适应性为退化草地修复提供依据.
Bibliography:11-1221/S
WANG Xue-quan, YIN Shu-le , YANG Zhan-wu ,LU Qi , YANG Heng-hua, CHEN Qi （ 1. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China; 2. Qinghai Forestry Research Institute, Xining 810016,Qinghai,China; 3. Qinghai Gonghe Desert Ecosystem Research Station, Gonghe 813005, Qinghai, China）
Gonghe Basin ; community composition ; soil nutrient; grassland
There exist three most representative Stipa brevora and Orinus kokonorica grasslan plant communities within d, Achnatherum splendens the Tala Shoal in Gonghe Basin, including grassland, and Caragana tibetica shrubland. Field data of plant and soil investigation from 19 samples plots in 95 quadrats （ 1 m × 1 m） was used to explore the community composition, soil texture and nutrient status of the three communities. Up to 32 plant species in total were found in the sample plot, with 11,22 and 21 plant species in C. tibetica shrubland, A. splendens and S. breviflora grasslands respectively. The plant biomass and coverage was hi
ISSN:1001-1498