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| 1 | Effects of vegetation cover on recruitment of Ulmus pumila L. in Horqin Sandy Land, northeastern China显示文摘Understanding the effects of vegetation cover on seedling survival is helpful for promoting vegetation restoration in environmentally fragile zones. This study was conducted in the desertified, moving sand dunes of Horqin Sandy Land, Inner Mongolia, northeastern China. We hyphothesized that(1) seed density(i.e., number/m2) increases as vegetation cover increases, and(2) there will be more surviving seedlings in locations with higher vegetation covers. Total vegetation cover and initial densities of seeds, germinated seeds and surviving seedlings of Ulmus pumilia were evaluated under various vegetation covers in trying to clarify the effects of vegetation cover on the early stages of the plant life history. In agreement with the first hypothesis, initial seed densities were greater(P<0.05) under higher vegetation covers. The relationship between vegetation cover and initial seed density was represented by a quadratic regression, where a threshold occurred with a vegetation cover of 36%(P<0.05). The higher total vegetation covers, however, did not result in increased densities of germinated seeds(P>0.05), which on average represented 16.7% of initial seed densities. Even more, three months after the study initiation, total vegetation covers were similar(P>0.05) at all positions in the dunes, and they determined a similar number(P>0.05) of surviving seedlings at those positions(i.e. the second hypothesis had to be rejected). The mean number of seed- lings that survived at all positions was only 4.5% of germinated seeds. The number of surviving elm seedlings(0 to 1.7 seedlings/m2) under various vegetations covers(12.2% to 20.8%) at all dune positions by late summer would most likely not contribute to vegetation restoration in the study area. | DeMing JIANG Yi TANG Carlos A BUSSO | 2014 | Journal of Arid Land2014，6，3： | 5 |
| 2 | Prevention of limb isehemia and edema during peripheral venoarterial extracorporeal membrane oxygenation in adults 显示文摘 | Busso CF Cannata A Vitali E | 2009 | J Card Surg2009，24，2： | 1 |
| 3 | A systems model of training responses and its relationship to hormo- nal responses in elite weight-lifters 显示文摘 | Busso T Hakkinen K Pakarinen A | 1990 | Eur J Appl Physiol1990，61，12： | 1 |
| 4 | Stress-strain histories in coatings on single crystal specimens of a turbine blade alloy 显示文摘 | Busso E P Mcclintock F A | 1988 | International Journal of Solids and Structures1988，24，11： | 1 |
| 5 | Hormonal adaptations and modelled responses in elite weightlifters during 6 weeks of training显示文摘 | BUSSO T HAKKINEN K PAKARINEN A | 1992 | Eur J Appl Physiol Occupat Physiol1992，64，4： | 1 |
| 6 | Weibull stress solutions for 2 - D cracks in elastic and e- lastic-plastic materials 显示文摘 | YLO'DOWD N P BUSSO E P WEBSTER G A | 1998 | International Journal of Frac- ture1998，89，3： | 1 |
| 7 | First in situ determination of ground and borehole thermal properties in Latin America 显示文摘 | P Roth A Georgiev A Busso | 2004 | Ren -ewable Energy2004，29，12： | 1 |
| 8 | Properties of pure normal alkanes in the C17 to C36 range 显示文摘 | SCHAERER A A BUSSO C J SMITH A E | 1955 | Journal of the American Chemical Society1955，77，7： | 1 |
| 9 | Prognostic faeton for lymph edema after primary treatment of breast carcinoma显示文摘 | HERD SMITH A BUSSO A MURACA M G | 2001 | Cancer2001，92，7： | 1 |
| 10 | Leptin signaling deficiency impairs humoral and cellular immune response and attenuates experimental arthritis 显示文摘 | Busso N So A Chobaz- Peclaz V | 2002 | J Immunol2002，168，2： | 1 |
| 11 | First in situ determination of ground and borehole thermal properties in Latin America显示文摘 | P Roth A Georgiev A Busso | 2004 | Renewable Energy2004，29，： | 1 |
| 12 | Maternal hypertriglyceridemia: A link between maternal overweight-obesity and macrosomia in ges- tational diabetes显示文摘 | Olmos PR Rigotti A Busso D | 2014 | Obesity(Silver Spring)2014，22，10： | 1 |
| 13 | First in situ determination of ground and borehole thermal properties in Latin America显示文摘 | Roth P Georgiev A Busso A | | 0，，： | 1 |
| 14 | The structure of cyclin H:common mode of kinase activation and specific features显示文摘 | ANDERSEN G BUSSO D POTERSZMAN A | 1997 | EMBO J1997，16，5： | 1 |
| 15 | High throughput SELEX SAGE method for quantitative modeling of tran- scription-factor binding sites显示文摘 | Roulet E Busso S Camargo A A | 2002 | Nat Biotechnol2002，20，8： | 1 |
| 16 | Demography and growthof Medicago minima and Erodium cicutarium : water stress effects显示文摘 | FELAEZ D V BUSSO C A ELIA O R’ | 1995 | Journalof Arid Environments1995，30，： | 1 |
| 17 | Leptin signaling deficiency impairs humoral and cellular immune responses and attenuates experimental arthritis 显示文摘 | Busso N So A Chobaz-Peclat V | 2002 | J Immunol2002，168，2： | 1 |
| 18 | ReguLation of the human AP-endonuclease (APE1/Ref-1) expression by the tumor suppressor p53 in response to DNA damage显示文摘 | Zaky A Busso C Izumi T | 2008 | Nucleic Acide Res2008，36，5： | 1 |
| 19 | High-throughput SELEX-SAGE method for quantitative modeling of transcription-factor binding sites显示文摘 | Roulet E Busso S Camargo A A | 2002 | Nature Biotechnology2002，20，8： | 1 |
| 20 | Leptin signaling deficiency impairs humoral and cellular immune responses and attenuates experimental arthritis 显示文摘 | Busso N So A Chobaz Peclat V | 2002 | J Immunol2002，168，2： | 1 |
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