[Phosphorus and sulphur bio-cycling in alpine tundra ecosystem of Changbai Mountains].
The study with compartment model on the phosphorus (P) and sulphur (S) bio-cycling in alpine tundra ecosystem of Changbai Mountains showed that the total storage of P and S was 16 088.6 t and 26 079.4 t, of which, 46.14 t and 64.82 t was in vegetation pool, 89.63 t and 53.16 t in litterfall pool, and 15952.8 t and 26014.6 t in soil pool, respectively. The above- and below-ground vegetation pool stored 21.88 t and 44.21 t, and 24.28 t and 20.61 t of P and S, respectively, and the above-ground vegetation pool had 47.4% of P and 68.2% of S in the vegetation subsystem. The transferable P amount was 24.25 t x yr(-1) through plant absorption and 31.59 t x yr(-1) through litterfall return, while the transferable S amount was 31.18 t x yr(-1), 10.12 t x yr(-1) and 21.06 t x yr(-1) in the aboveground plant, belowground root system, and litterfall return, respectively. The natural return ratio of S was 67.5%.
Wei
Jing
J
Key Laboratory of Systems Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. weijingrcees@126.com
Wu
Gang
G
Wang
Huan
H
Hao
Yingjie
Y
Shang
Wenyan
W
D002681:China; D017753:Ecosystem; D010758:Phosphorus / Q000378:metabolism*; D010944:Plants / Q000378:metabolism*; D012987:Soil / Q000032:analysis*; D013455:Sulfur / Q000378:metabolism*
D012987:Soil; D010758:Phosphorus; D013455:Sulfur