{"title":"埃塞俄比亚东提格雷旱地围场提高木本物种多样性","authors":"Emiru Birhane, D. Teketay, P. Barklund","doi":"10.4314/EAJSCI.V1I2.40352","DOIUrl":null,"url":null,"abstract":"Vegetation and soil seed banks were studied in exclosures and unprotected areas, to investigate the role of exclosures in the rehabilitation of degraded drylands. Woody vegetation was assessed in fifty plots in exclosures and 30 in unprotected areas, each measuring 20 × 20 m². Twenty-seven woody species representing eighteen families were observed in exclosures and fourteen woody species representing twelve families were\nrecorded in open area. Higher abundance, density and basal area were found in the exclosure. An expanding population structure in exclosure, and obstructed population structure in open area, showed favorable succession in the set-aside area. In both cases, woody species were absent in the soil seed bank. Keywords : Degradation; Natural Regeneration; Rehabilitation; Soil Seed Bank East African Journal of Sciences Vol. 1 (2) 2007: pp. 136-147","PeriodicalId":33393,"journal":{"name":"East African Journal of Sciences","volume":"1 1","pages":"136-147"},"PeriodicalIF":0.0000,"publicationDate":"2007-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4314/EAJSCI.V1I2.40352","citationCount":"46","resultStr":"{\"title\":\"Enclosures to Enhance Woody Species Diversity in The Dry Lands of Eastern Tigray, Ethiopia\",\"authors\":\"Emiru Birhane, D. Teketay, P. Barklund\",\"doi\":\"10.4314/EAJSCI.V1I2.40352\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Vegetation and soil seed banks were studied in exclosures and unprotected areas, to investigate the role of exclosures in the rehabilitation of degraded drylands. Woody vegetation was assessed in fifty plots in exclosures and 30 in unprotected areas, each measuring 20 × 20 m². Twenty-seven woody species representing eighteen families were observed in exclosures and fourteen woody species representing twelve families were\\nrecorded in open area. Higher abundance, density and basal area were found in the exclosure. An expanding population structure in exclosure, and obstructed population structure in open area, showed favorable succession in the set-aside area. In both cases, woody species were absent in the soil seed bank. Keywords : Degradation; Natural Regeneration; Rehabilitation; Soil Seed Bank East African Journal of Sciences Vol. 1 (2) 2007: pp. 136-147\",\"PeriodicalId\":33393,\"journal\":{\"name\":\"East African Journal of Sciences\",\"volume\":\"1 1\",\"pages\":\"136-147\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2007-12-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.4314/EAJSCI.V1I2.40352\",\"citationCount\":\"46\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"East African Journal of Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4314/EAJSCI.V1I2.40352\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"East African Journal of Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/EAJSCI.V1I2.40352","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 46
摘要
研究了封地和未保护地区的植被和土壤种子库，以调查封地在恢复退化旱地方面的作用。评估了50个封地样地和30个无保护地样地的木本植被，每个样地面积为20 × 20 m²。封闭区共记录到18科27种木本植物，开放区记录到12科14种木本植物。圈地的丰度、密度和基底面积均较高。圈闭区种群结构扩张，开阔区种群结构受阻，在隔离区表现出良好的演替。在这两种情况下，土壤种子库中都没有木本物种。关键词:降解;自然再生;康复;土壤种子库东非科学杂志Vol. 1 (2) 2007: pp. 136-147
Enclosures to Enhance Woody Species Diversity in The Dry Lands of Eastern Tigray, Ethiopia
Vegetation and soil seed banks were studied in exclosures and unprotected areas, to investigate the role of exclosures in the rehabilitation of degraded drylands. Woody vegetation was assessed in fifty plots in exclosures and 30 in unprotected areas, each measuring 20 × 20 m². Twenty-seven woody species representing eighteen families were observed in exclosures and fourteen woody species representing twelve families were
recorded in open area. Higher abundance, density and basal area were found in the exclosure. An expanding population structure in exclosure, and obstructed population structure in open area, showed favorable succession in the set-aside area. In both cases, woody species were absent in the soil seed bank. Keywords : Degradation; Natural Regeneration; Rehabilitation; Soil Seed Bank East African Journal of Sciences Vol. 1 (2) 2007: pp. 136-147
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