针茅

Leaves circinately 2-folded toward stipule when young, leaf blade orbicular to oblanceolate, elliptic, or linear, 1.5-4.6 cm; peduncle and sepals glabrous; styles subequaling ovary

幼时的对于托叶2 折叠的叶环状，叶片圆形到倒披针形，椭圆形，或线形，1.5-4.6厘米；花序梗和萼片无毛；花柱近相等子房 4 D。 oblanceolata 长柱茅膏菜

The results showed that in the enclosed area in the natural recovery process, the constructive species of Stipa niche width became larger and the dominant populations niche width presented reducing trends and the majority of the remaining population niche width was gradually increasing.

结果表明：在围封自然恢复进程中，建群种针茅的生态位宽度较大，主要优势种群的生态位宽度呈减小趋势，其余大部分种群生态位宽度逐渐增大。

Climate change ; aboveground net annual primary production ; aboveground average growth season production ; Stipa breviflora community

气候变化；地上净生产量；生长季节地上平均生产量；短花针茅植物群落

Stipa krylovii ; Community primary productivity ; seasonal distribution of precipitation ; integral regression model

克氏针茅；群落初级生产力；降水量季节分配；积分回归模型

4Rotational grazing system increased the light saturation point of Stipa grandis and Leymus chienesis,however,the effection towards light compensive point was not significant.

4划区轮牧提高了大针茅和羊草的光饱和点，但对光补偿点影响不大，因此扩大了其进行光合的光强范围。

Natural conditions and grazing pressure affected gene flow and their frequency, which resulted in various ecotypes.

不同的地理条件和放牧利用压力对基因流和基因频率发生影响，决定了分子变异在时空上的分布，使得针茅属植物种间、种内不同种群间发生形态、遗传分化的原因。

Here is our country saves the most in good condition prairie at present, aquatic lush, growing the grazing with a variety of 120 rich nutrition such as grass of cogongrass of alkaline grass, needle, clove, ice, have " of " grazing kingdom say.

这里是我国目前保存最完好的草原，水草丰美，生长着碱草。针茅。苜蓿。冰草等120多种营养丰富的牧草，有%26quot；牧草王国%26quot；之称。

Mowing suppressed seedling emergence of tall-growing Stipa krylovii by affecting seed availability due to reproductive parts removal when mown in the previous year, whilst exerted a positive effect on low-growing Cleistogenes squarrossa probably as result of increased light availability and less competitive pressure from adult individuals, because mowing largely lowered the vegetation height and density. 3."U"shaped curve for seedling mortality across the entire growing season was thought to be associated with seasonal changes of air temperature but a small peak from mid-June to early July could probably be attributed to drought due to previous rainfall shortage.

自5月下旬至8月中旬，三种禾草的实生苗密度总体上都呈上升趋势，但刈割和放牧会使克氏针茅的实生苗密度受到抑制，表明前一年的刈割去除部分生殖器官影响形成实生苗的种子来源；刈割和放牧对生长较低矮的糙隐子草实生苗会产生正向效应，对低矮和稀疏植被进行有规律的刈割会增加植物群落内部的光照，减轻实生苗与成年母株的竞争。

But the distribution patterns became the temporal clump distribution in the S. bungeana community owing to the effect of short-living species.

从本氏针茅群落向油蒿群落以及牛心朴子群落的退化过程中，其分布格局由随机分布分化成随机分布和聚集分布。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。