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| 1 | Analysis of Grassland Vegetation of the Southwest Heilongjiang Steppe (China) Using the Power Law显示文摘In 1997, we conducted a vegetation survey in three semi-arid natural grasslands (steppes) withdifferent livestock grazing intensities in Southwest Heilongjiang Province, China. The dominant grasslandspecies was the grass Stipa baicalensis Roshev. Grasslands with light, intermediate, and heavy grazingintensities were located 10, 5, and 2 km from a village, respectively. Villagers use the steppe to raise cattle,horses, sheep, and goats. Each of the three grasslands was surveyed by placing 100 quadrats (50 cm×50 cm)along a 50 m line transect. Each quadrat was divided into four equal areas (25 cm×25 cm; S-quadrats) and allplant species occurring in each of these smaller areas were identified and recorded. These data were summa-rized into frequency distributions and the percentage of S-quadrats containing a given species and thevariance of each species were estimated. The power law was applied to these estimates. The power law wasused to evaluate the spatial heterogeneity and frequency of occurrence for each species in the grasslandcommunity. The lightly grazed grassland exhibited high spatial heterogeneity (caused by large plant size),the highest species diversity, and a high occurrence of S. baicalensis. In contrast, the heavily grazedgrassland exhibited high spatial heterogeneity (caused by patchy populations of small plant size), lowspecies diversity, and a low occurrence of S. baicalensis. We judged that the heavily grazed grassland wasovergrazed and exclusion of livestock from the degraded areas is necessary for recovery. | Mikinori TSUIKI Yu-Sheng WANG Yiruhan Michio TSUTSUMI Masae SHIYOMI | 2005 | Journal of Integrative Plant Biology2005，47，8： | 6 |
| 2 | Effects of Feces on Spatial Distribution Patterns of Grazed Grassland Communities显示文摘Animals excrete feces during grazing.The uneven distribution of feces causes a spatial heterogeneity in grassland communities.In this study,we attempted to clarify the effects of feces on spatial distribution patterns of plant species.A field study was conducted on four grasslands each grazed by a single cow.These four grasslands were defined as Poa pratensis(Kentucky bluegrass) dominated grassland without feces(PoF-),Poa pratensis dominated grassland with feces(PoF+),Zoysia japonica Steud.(Japanese lawngrass) dominated grassland without feces(ZyF-),and Zoysia japonica Steud.dominated grassland with feces(ZyF+).A 50 m line that transects 100 equally spaced quadrats(L-quadrats) was drawn on each of the four grasslands.Each quadrat was 0.50 m × 0.50 m in size and consisted of four equal-area cells of 0.25 m × 0.25 m(S-quadrats).The occurrences of all plant species were recorded in each S-quadrat.The binomial distribution(BD) and beta-binomial distribution(BBD) were used to represent the variation in spatial patterns.The BBD provided a significant description of the frequency distribution of plants per quadrat.A power law was used to calculate the spatial heterogeneity of each species together with the community heterogeneity.The results revealed that the plants on each of the four grasslands were aggregatively distributed.The ZyF+ exhibited greater spatial heterogeneity than the ZyF-due to the uneven deposition of feces by cows grazing on the grasslands.Additionally we also found that the feces had effect on the heterogeneity inZyF+ and did not have effect in PoF+. | Tamanna Islam Eiki Fukuda Masae Shiyomi Molla Rahman Shaibur Shigenao Kawai Mikinori Tsuiki | 2010 | Agricultural Sciences in China2010，9，1： | 2 |
| 3 | Versatilecurrent-mode biquad filter using multiple current output OTAs显示文摘 | Tsukutani T Ishida M Tsuiki S | 1996 | Int J Electron1996，80，4： | 1 |
| 4 | Effects of titratable oral appliance on supine airway size in awake no-apneic individuals显示文摘 | TSUIKI S HYIAMA S ONO T | 2001 | Sleep2001，24，： | 1 |
| 5 | Synthesis of seroton in intraumatized ratbrain显示文摘 | Tsuiki K Takada A Nagahiro S | 1995 | J Neurochem1995，64，： | 1 |
| 6 | Sellar repair with-resorbable polyglactin acid sheet and fibrin glue inendoscopie endonasal transsphenoidal surgery显示文摘 | YANO S TSUIKI H KUDO M | | 0，，01： | 1 |
| 7 | Functional metal macro cycles and their polymers kinetics and mechanism of the biomimetic oxidation of thiol by oxygen catalyzed by homogeneous metals 显示文摘 | Shirai H Tsuiki H Masuda E | 1991 | Journal of Physical Chemistry1991，95，1： | 1 |
| 8 | Proteolytic cleavage of the CD44 adhesion molecule in multiple human tumors显示文摘 | Okamoto I Tsuiki H Kenyon LC | 2002 | Am J Pathol2002，160，2： | 1 |
| 9 | A novel current-mode active-R biquad using differential-input differential-output operational amplifiers显示文摘 | TSUKUTANI Takao TSUIKI Sumio ISHIDA Masaru | 1995 | Int J Electronices1995，79，5： | 1 |
| 10 | Current-mode biquad without external passive elements 显示文摘 | TSUKUTANI T ISHIDA M TSUIKI S | 1996 | Electronics Letters1996，，2： | 1 |
| 11 | All-trans-retinol generated by rhodopsin photobleaching induces rapid recruitment of TIP47 to lipid droplets in the retinal pigment epithelium显示文摘 | Tsuiki E Fujita A Ohsaki Y | 2007 | Invest Oph-thalmol Vis Sci2007，48，6： | 1 |
| 12 | A variational nodal ex- pansion method for the solution of multigroup neutron diffusion equations with heterogeneous nodes显示文摘 | TSUIKI M HVAL S | 2002 | Nucl Sci Eng2002，141，： | 1 |
| 13 | Proteolytic cleavage of the CD44 adhesion molecule in multiple human tumors 显示文摘 | Okamoto I Tsuiki H Kenyon L C | 2002 | Am J Patho12002，160，： | 1 |
| 14 | Visualization of Subthreshold Micropulse Diode Laser Photocoagulation by Scanning Laser Ophthalmoscopy in the Retro Mode显示文摘 | Ohkoshi K Tsuiki E Kitaoka T | 2010 | Am J Ophthalmol2010，150，： | 1 |
| 15 | Effects of a titratable oral appli-ance on supine airway size in awake non - apueic individuals显示文摘 | Tsuiki S HiyamaS Ono T | 2001 | Sleep2001，24，5： | 1 |
| 16 | Sellar repair with resorbable polyglactin acid sheet and fibrin glue in endoscopic endonasal transsphenoidal surgery显示文摘 | Yano S Tsuiki H Kudo M | 2007 | Surg Neurol2007，67，1： | 1 |
| 17 | Effects of a titratable oral appliance on supine airway size in awake non-apneic individuals显示文摘 | Tsuiki S Hiyama S Ono T | | 0，，05： | 1 |
| 18 | CD44 cleavage induced by a membrane-associated metalloprotease plays a critical role in tumor cell migration显示文摘 | Yoshiaki K Tsuiki H | 1999 | Oncogene1999，18，： | 1 |
| 19 | Effects of an anteriorly titrated mandibular position on awake airway and obstructive sleep apnea severity显示文摘 | Tsuiki S Lowe A A Almeida F R er al | 2004 | AM J Orthod Dentofacial Orthop2004，125，： | 1 |
| 20 | Proteolytic cleavage of the CD44 adhesion molecule in multiple human tumors显示文摘 | Okamoto I Tsuiki H Kenyon L C | 2002 | Am J Pathol2002，160，2： | 1 |
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