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- W2360462625 abstract "The sloping-land with purple soils in Hengyang of Hunan Province,South-central China covers1.625×105 hm2.It is the most severe region of eco-environment,and at the same time,the most representative eco-catastropie region in South China.Therefore,ecosystem restoration of the present problem area has been focused.Since,re-vegetation is the first of any restoration program conducted,by which,land cover will be safe for further wastage.Thus,to comprehend the soil seed bank properties under different soil-usedmodels,we investigated the soil seed bank in hill closing(20a)(Ⅰ),abandoned farmland(2a)(Ⅱ)and farmland(Ⅲ),using theseed germinationmethod.The objectives of the present study were:How landused influences the species composition in the ecosystem?What relationship exists between soil seed banks and re-vegetation?Results indicated:(1)The average seed density among three different land-used models were followed the order as modelⅡmodelⅢmodelⅠ.(2)The effect of soil depth on seed number was significantly different as the highest seed number was found in 0~5cm soil layer and showed decreasing trend with the increase of soil depth.(3)The Czekanowski similarity indices of three different land-used models seed banks were low(0~0.399 8).Patrick richness(R)among three different land-used models were followed the order as modelⅡ(16)modelⅠ(14)modelⅢ(13)(P0.05),the Shannon-Wiener indices(H)and Pielou evenness indices(E),modelⅡmodelⅢmodelⅠ(P0.05),the Simpson indices(D),modelⅠmodelⅢmodelⅡ(P0.05).(4)Most abundant herbaceous species composition was the member of Compositae and Gramineae family indicated the re-vegetation laid early stage of primary succession.(5)ModelⅠ and modelⅡ belonged to progressive succession(modelⅠ stayed higher succession stages),and modelⅢ,retrogressive succession.All the results indicated it was possible but difficult for ecosystem restoration only by soil seed bank in the area.Based on the consideration of natural re-vegetation potential,artificial restoration strategy in combination with natural re-vegetation should be employed,to accelerate the re-vegetation for a sustainable and healthy ecosystem on sloping-land with purple soils in Hengyang of Hunan Province,South-central China." @default.
- W2360462625 created "2016-06-24" @default.
- W2360462625 creator A5026663985 @default.
- W2360462625 date "2014-01-01" @default.
- W2360462625 modified "2023-09-24" @default.
- W2360462625 title "Soil Seed Bank Properties under Different Land-used Models on Sloping-land with Purple Soils in Hengyang of Hunan Province,South-central China" @default.
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