[Characteristics of artificial grassland plant communities with different establishment duration and their relationships with soil properties in the source region of three rivers in China].
This paper studied the biomass, species composition, and diversity index of artificial grassland plant communities with different establishment duration in the source region of the Three Rivers, and examined the relationships of soil physical and chemical properties with the changes of the plant community biomass and species diversity. The results showed that the species composition, functional group composition, and quantitative characters of the plant communities varied greatly. Soil moisture content increased with increasing species diversity, while soil bulk density was in adverse. Soil microbial biomass carbon significantly positively correlated with soil moisture and organic matter contents, but negatively correlated with soil bulk density. Soil organic carbon content had a "V" type change, which was consistent with the change pattern of soil moisture content, and decreased with increasing soil bulk density. Plant community biomass had significant positive correlations with the contents of soil nutrients and moisture, and the increase of the above- and below-ground biomass of plant communities promoted the increase of soil nutrient contents.
Wang
Chang-ting
CT
Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China. wcht6@hotmail.com
Cao
Guang-min
GM
Wang
Qi-lan
QL
Shi
Jian-jun
JJ
Du
Yan-gong
YG
Long
Rui-jun
RJ
D044822:Biodiversity; D018533:Biomass; D002244:Carbon / Q000032:analysis; D002681:China; D017753:Ecosystem; D006109:Poaceae / Q000145:classification / Q000254:growth & development*; D011157:Population Dynamics; D045483:Rivers; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology
D012987:Soil; D002244:Carbon