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J Integr Plant Biol, 1992, 34 (7): -, Research Article
Contrast Study About Litter Dynamics of Main Communities in Aneurolepidium chinense Grassland Region in Northeast of China
Guo Ji-xun and Zhu Ting-cheng
The standing death rate of main communities in Aneurolepidium chinense (Trin.) Kitag. grassland increased slowly in 5–8 months. After August, the standing death rate greatly quickened because the changes of ecological environment limited the growth of plants. The maximum standing death rate of A. chinense and Calamagrostis epigejos(L.) Roth-weed communities was in October and that of Puccinella tenuiflora (Griseb). Scrihn. et Merr. and Suaeda glauca (Bunge) Bunge communities was in September. The seasonal changes of litter weight followed the index law. The communities in the order of litter weight were: C. epigejos-weed community. A. chinense community>P. tenuiflora community>S. glauca community. There was a positive relationship between aboveground standing crop and litter before August, and a negative relationship after August.
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