[Effects of vegetation recovery practices on the characteristics of soil nematode communities on seriously degraded grasslands in Songnen Plain].
In this paper, the data of soil nematodes on the seriously degraded grasslands in Songnen Plain under different vegetation recovery practices were collected from May to October, 2005, and the community structure and its seasonal changes of the nematodes were studied by using the community parameters of generic richness, abundance, diversity index, and functional group index. The results showed that both fencing enclosure and planting Puccinellia chinampoensis could improve the nematode communities substantially. The nematode abundance and diversity were significantly higher in planting P. chinampoensis than in fencing enclosure, whereas the generic richness and evenness had no significant difference between these two vegetation recovery practices. The functional group index indicated that fencing enclosure and planting P. chinampoensis altered the ratio of rho- and kappa- choice of plant parasite nematodes. Compared with free-living nematodes, plant parasite nematodes were more sensitive to the vegetation recovery practices. On the seriously degraded grasslands in Songnen Plain, planting P. chinampoensis could be more favorable to the restoration of soil nematode communities than fencing enclosure.
Wu
Dong-Hui
DH
College of Earth Sciences, Jilin University, Changchun 130061, China. wudhyang@yahoo.com.cn
Yin
Wen-Ying
WY
Yan
Ri-Qing
RQ
D000818:Animals; D002681:China; D017753:Ecosystem; D009348:Nematoda / Q000145:classification / Q000254:growth & development*; D006109:Poaceae / Q000145:classification / Q000254:growth & development*; D011157:Population Dynamics; D012987:Soil / Q000469:parasitology*
D012987:Soil