|
|
|
| Advances in research on enclosure effects on vegetation restoration and soil physicochemical property of degraded grassland |
| Liu Fengchan1, Li Hongli1, Dong Zhi1, Zhang Hao2 |
| (1. Forestry College of Shandong Agricultural University, Shandong Province Soil Erosion and Ecological Restoration Key Laboratories,Taishan Forest Ecosystem Research Stations, 271018, Tai’an, Shandong; 2. College of Ecological Environment,Inner Mongolia Agriculture University, 010019, Hohhot: China) |
|
|
|
|
Abstract Enclosure is one of the effective measures for ecological restoration of degraded grassland. On the basis of existing research, the effect of enclosure on plant diversity, biomass, vegetation succession,soil physical and chemical property were summarized and six contents and directions were proposed about degraded grassland enclosure research in future. Conclusion: As a result of different geographical area,climatic conditions and degradation degree before enclosure, vegetation diversity under enclosure appeared three results, significant increase, stability and dramatic decline. Biomass increased in the early period of enclosure, and for long time enclosure biomass could not keep the increasing tendency. In addition, enclosure could increase population colonizing ability and community resources redundancy,prompt the improvement of soil seed bank structure, increases of density and positive succession of prairie which may appear three succession modes. Enclosure improved the physics properties of soil, since at soil surface “tight layer”was eliminate, but conclusions of enclosure effect on soil nutrients were not too consistent.
|
|
Received: 16 February 2012
|
|
|
|
|
|
|
