大针茅

大针茅群落和退化群落的T／ET值居中。

The T / ET values of Stipa grandis and deteriorated communities were in the middle .

缓慢增长型&大针茅（Stipagrandis）；

Slow increase type : Stipa grandis ;

本研究应用RAPD技术检测大针茅植物不同放牧压力下群体的遗传多样性，探索放牧强度与遗传分化的相互联系。

Random Amplified Polymorphic DNA ( RAPD ) analyses was used to estimate the genetic diversity and explore connection of grazing intensity and genetic variation of S. grandis .

采用连续放牧的方式研究了不同放牧率对大针茅（Stipagrandis）种群结构的影响。

The experiment on the influence of continuous grazing rates on population structure of Stipa grandis was conducted over two years .

利用透光密闭箱对内蒙古半干旱典型草原大针茅草原土壤-植被系统温室气体N2O和CH4通量在不同年份进行了较长期的原位观测研究。

Using transparent closed chamber technique , the in situ measurements of N2O and CH4 fluxes in temperate typical semi-arid grasslands-Stipa grandis soil-vegetation ecosystem were conducted in different years in Inner Mongolia .

Pearson相关分析表明，大针茅种群内基因多样性与温度因子（≥10℃年积温、年均温和1月份均温）之间存在显著（p0·05）或极显著（p0·01）的相关关系；

By Pearson correlation analysis , significant correlations were found between gene diversity indexes and temperature factors (≥ 10 ℃ cumulative temperature in a year , annual mean temperature and mean temperature in January ), and all diversity indexes showed significant correlations with mean temperature in January .

自由放牧提高大针茅盖度、密度；

Continuous grazing increased the coverage and density of Stipa grandis ;

不同放牧梯度大针茅草原植物群落变化

Variation of plant population of Stipa grandis under a grazing gradient

大针茅成熟胚愈伤组织诱导及分化的探索

Callus Induction and Differentiation of Mature Embryos of Stipa grandis

不同放牧率对大针茅种群结构的影响

Influence of grazing rate on population structure of Stipa grandis

不同放牧压力下大针茅种群的遗传多样性

Genetic diversity of Stipa grandis under different grazing pressures

羊草和大针茅凋落物分解及其微生物学效应

The microbiological effect and decomposition of litter of Aneurolepidium chinense and Stipa grandis

大针茅和克氏针茅在放牧条件下的可塑性均大于割草条件下的可塑性。

The plasticity of both species under grazing was larger than under mowing condition .

连续放牧有利于提高适口性差的大针茅种群结实生殖枝数、种子雨及其萌发力。

CG increases Stipa grandis population reproductive shoot number , seed rain and its viability .

放牧制度对大针茅草原群落特征及结构的影响

Influencing of Characteristics and Structure of Community under Different Grazing Systems on Stipa Grandis Steppe

围栏禁牧对羊草草原和大针茅草原蝗虫丰富度的影响

Effect of livestock exclusion on abundance of grasshoppers on Aneurolepidium chinense and Stipa grandis steppes

大针茅草原生物量动态与土壤贮水量关系模型的研究

Study on Relationship of Biomass Dynamic of plants and the Soil Water Capacity on Stipa grandis Grassland

随着放牧强度的增加，大针茅体内淀粉含量降低，但可溶性糖含量变化不大。

Starch content was increased too , but different grazing gradients had hardly influenced soluble sugar content .

研究结果对大针茅种质资源的保护具有重要的指导意义。

The results of this study may be useful for guiding the conservation of germplasm of Stipa grandis .

内蒙古典型草原羊草和大针茅地下器官中碳水化合物含量的季节性变化

Changes of carbohydrate contents in below ground organs of Leymus chinensis and Stipa grandis in the inner Mongolian steppes

羊草和大针茅群落的暗呼吸强度与环境条件关系的初步探讨

The preliminary studies on relationship between dark respiration rate and environmental factors in Leymus chinensis and Stipa grandis communities

放牧影响羊草和大针茅草原土壤退化的微形态研究

Micromorphological investigation on the influence of grazing intensity on soil degradation of Aneurolepidium Chinese steppe and Stipa grandis Steppe

中温型草原和暖温型草原大针茅+羊草群落结构特征的比较

A Comparative Study on Structure Characteristics of Community of Stipa grandis + Leymus chinensis in Moderate-temperate Steppe and Warm-temperate Steppe

大针茅+羊草草地退化演替阶段的研究15个羊茅类草坪草种的适应性比较

The Succession Stages of Stipa Grandis + Leymus Chinensis Typical Steppe Comparison of the Adaptability of Fifteen Fescue Turf Grass

羊草和大针茅植物群落土壤养分含量与转化规律的初步研究

Preliminary study on the content and transformation of the soil nutrients in the community of Stipa glandis and aneurolepidium chinensis

典型草原退化群落恢复演替过程中大针茅组织细胞变化的研究

Research on the tissue and cell change of Stipa grandis in the course of restoring succession of the typical steppe degraded community

大针茅草原是干旱半干旱地区典型草原的一个代表类型，是内蒙古草原区主要的放牧场之一。

Stipa grandis steppe is a typical type of grassland in arid and semiarid area , which is a major grazing land in Inner Mongolia .

土壤含水量与温度对羊草、大针茅典型草原土壤-植物系统温室气体收支影响的初步研究

The Primary Study on the Effect of Soil Moisture and Temperature on Greenhouse Gases Fluxes from Aneurolepidium Chinense and Stipa Grandis Typical Prairie Soil-Plant System

施用磷酸二胺后，羊草与大针茅的氮含量均随施肥梯度的增加而增加，且提高的幅度在不割草对照中较1年割1次要高；

Nitrogen contents in Stipa grandis and Leymus chinensis increased with fertilizer increasing in the two mowing systems , and were higher in control plot than that of plot mowed once a year .

本项研究指出，在晴天条件下，由于土壤水分含量不同，羊草和大针茅的光合作用日进程呈现出两种类型：在土壤水分充足时，为午前高峰型；

This study shows that under fine-weather conditions due to difference of soil moisture content the diurnal course of photosynthesis of Aneurolepidium Chinense and Stipa Grandis has two types . When the soil moisture is sufficient , there is the monopeak type with a peak occurring before midday .