CAJ | 학술논문

为了揭示植物微观特征对放牧干扰的适应机制，在新疆天山北坡荒漠草地开展了放牧强度对伊犁绢蒿(Seriphidium transiliense)叶片小裂叶解剖结构及表皮微形态特征影响的研究.结果表明，放牧使伊犁绢蒿叶厚、叶宽、主脉厚度、上表皮细胞角质层厚、下表皮细胞角质层厚、上表皮栅栏组织厚、下表皮栅栏组织厚、主脉维管束直径、侧脉维管束直径呈降低趋势，降幅为10．41％~34．59％.轻度放牧、中度放牧、重度放牧间仅在叶宽、主脉维管束直径呈显著差异(P ＜0．05)；变异系数分析结合相关性分析表明，叶厚、叶宽、主脉厚度、上表皮细胞角质层厚、栅栏组织、侧脉维管束直径对放牧响应较为敏感；与对照比，放牧后伊犁绢蒿叶表皮蛛丝状绒毛呈狭长型增加，叶表皮外壁脊状凸起不规则，条状纹饰长短不一，分布不均匀，且重度放牧下凸起间沟壑较轻度放牧和中度放牧深.
위료게시식물미관특정대방목간우적괄응궤제，재신강천산북파황막초지개전료방목강도대이리견호(Seriphidium transiliense)협편소렬협해부결구급표피미형태특정영향적연구.결과표명，방목사이리견호협후、협관、주맥후도、상표피세포각질층후、하표피세포각질층후、상표피책란조직후、하표피책란조직후、주맥유관속직경、측맥유관속직경정강저추세，강폭위10．41％~34．59％.경도방목、중도방목、중도방목간부재협관、주맥유관속직경정현저차이(P ＜0．05)；변이계수분석결합상관성분석표명，협후、협관、주맥후도、상표피세포각질층후、책란조직、측맥유관속직경대방목향응교위민감；여대조비，방목후이리견호협표피주사상융모정협장형증가，협표피외벽척상철기불규칙，조상문식장단불일，분포불균균，차중도방목하철기간구학교경도방목화중도방목심.
In order to reveal adaptive mechanism of plant microscopic features to grazing disturbance,the effect of grazing on anatomic structure and epidermal micro-morphology of Seriphidium transiliense leaves was studied on desert grassland of northern slope of Tianshan Mountains in Xinjiang.Results showed that leaf thickness,leaf widths,main vein thicknesses,cut-in thicknesses of upper epidermal cells,cut-in thick-nesses of lower epidermal cells,thicknesses of palisade tissue of upper epidermis,thicknesses of palisade tissue of lower epidermis,main vein vascular bundle diameters,lateral vein vascular bundle diameters of S. transiliense decreased under grazing,decline of 10.41%-34.59%.There was significant difference only on blade widths and main vein vascular bundle diameters among light grazing,medium grazing and heavy graz-ing (P <0.05).Variation coefficients and correlation analysis indicated that leaf thickness,leaf widths,main vein thickness,cut-in thickness of upper epidermal cells,palisade tissue,lateral vein vascular bundle diame-ters were sensitive to grazing.Compared with the control,arachnoid tomentum of S.transiliense leaf epi-dermis increased elongately,epidermatic outer wall of leaf became irregular and strip pattern varied in length and distributed not evenly after grazing and gaps between bumps under heavy grazing were deeper than these under light or medium grazing.