检索结果-南通市图书馆

Journal of Geographical Sciences 2023年第3期33卷 529-546页

作者： Ilan STAVI Manuel PULIDO FERNáNDEZ Eli ARGAMAN Dead Sea and Arava Science Center Yotvata 88820Israel Eilat Campus Ben-Gurion University of the NegevEilat 88100Israel Geo-Environmental Research Group University of ExtremaduraCáceres 10071Spain Soil Erosion Research Station Ministry of Agriculture&Rural DevelopmentPOB 30Bet Dagan 50250Israel

land degradation affects extensive drylands around the *** to long-term misuse,the Israeli Sde Zin dryland site has faced severe *** study objective was to assess the feasibility of passive restoration in recovering the *** study was conducted in four land-units along a preservation-degradation continuum:(1)an area that has not faced anthropogenic disturbances(Ecological land);(2)an area that was proclaimed as a national park in the 1970s(Rehabilitation);(3)an area that was prone,until recently,to moderate anthropogenic pressures(Triangle);and(4)a dirt road that was subjected to long-term off-road traffic(Dirtroad).Soil was sampled and analyzed for its *** soil physical quality followed the trend of Ecological land>Rehabilitation>Triangle>***,high soil salinity in the latter three land-units is attributed to long-term erosional processes that exposed the underlying salic *** and shrubby vegetation cover was also *** herbaceous vegetation cover followed the trend of Ecological land(86.4%)>Rehabilitation(40.3%)>Triangle(26.2%)>Dirtroad(2.1%),while the shrubby cover was 2.8%in the Ecological land-unit,and practically zero in the other *** seems that despite the effectiveness of passive restoration in recovering the soil’s physical properties,the recovery of vegetation is limited by the severe soil salinity.

关键词： active rehabilitation ecosystem functions land-use change land degradation and desertification annual vs.perennial plants self-restoration

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