草地沼泽

The following conclusions have been made in this paper.(1) Based on CO_2 flux data of eddy covariance, variation characteristics of gross primary productivity in four flux observation stations were studied, which are an alpine meadow, an alpine shrub meadow, a swamp alpine meadow and a steppe alpine meadow at Dongxiong. The results show that photosynthetic capacity of the alpine meadow is the highest, and the annual total GPP is 652.2g C/m~2. Daily-differencing approach is used to analyze the random error of CO_2 fluxes measurements. The results show that the distribution of random error follows more closely follows a double-exponential, rather than a normal distribution, capturing the high peak and thick tail, and the random error varies with environment variables, which violates the assumptions for the ordinary least squares fitting with normality and homoscedasticity, consequently, we introduce maximum likelihood method for parameter optimization.

本文主要在以下几个方面开展工作并获得了一些认知和结论：(1)通过分析样带区域内高寒草甸、高寒灌丛、沼泽化湿地和草原化高寒草甸四个通量观测站点草地生态系统总初级生产力变化特征，研究结果表明HBBT矮嵩草草甸生态系统植被光合作用能力较强，年GPP总量为652.2 gC/m~2，明显高于其他三种生态系统；通过利用"单塔日变化法"获得四站点通量观测数据随机误差，结果表明通量观测随机误差概率分布呈现尖峰厚尾的特征，与正态分布相比，更服从双边指数分布，进一步分析表明通量观测随机误差随环境变量(风速、温度和光合有效辐射)的变化而变化，这违背了普通最小二乘法进行生态过程模型参数优化正态分布且误差同质的假设，因此本研究中引入最大似然法进行生态过程模型参数优化。

Motts are small, stubby-legged quadrupeds that can sometimes be heard snuffling in the mudbanks and grasses of the Naboo swamps.

莫特兽是体型小且矮胖的四足兽，有时可听见它们在那卜沼泽的泥滩。草地里发出的叫声。

Barely two blocks back from the water, on either side of the bayou, the town abruptly stops, giving way to an endless maze of marsh grass and open water and more marsh grass adorned with statuesque snowy egrets fishing stone-still in a pose straight out of an Audubon painting.

向左或向走两条街﹐小镇就突然不见了﹐再过去就是一望无际的沼泽草地和空旷的水域﹐再远是更多的沼泽草地﹐其间点缀着雪点般的白鹭﹐它们寂静不动的捕鱼形象﹐有如出自奥特朋的油画。

The sun sets on some retired meadow, where no house is visible, with all the glory and splendor that it lavishes on cities, and, perchance, as it has never set before,--where there is but a solitary marsh-hawk to have his wings gilded by it, or only a masques lookout from his cabin, and there is some little black-veined brook in the midst of the marsh, just beginning to meander, winding slowly round a decaying stum We walked in so pure and bright a light, gilding the withered grass and leaves, so softly and serenely bright, I thought I had never bathed in such a golden flood, without a ripple or a murmur to it.

此刻那落日的余辉正以它全般的灿烂与辉煌，并不分城市还是乡村，甚至以往日也少见的艳丽，尽情斜映在一带境远地僻的草地之上；这里没有一间房舍——茫茫之中只瞥见一头孤零零的沼鹰，背羽上染尽了金黄，一只麝香鼠正探头穴外，另外在沼泽之间望见了一股水色黝黑的小溪，蜿蜒而前，绕行于一堆残株败根之旁。我们漫步于其中的光照，是这样的纯美与熠耀，满目衰草木叶，一片金黄，晃晃之中又是这般柔和恬静，没有一丝涟漪，一息咽呜。我想我从来不曾沐浴于这么幽美的金色光汛之中。

This is a forage grass, providing hay from swampy areas.

这是一块饲料草地，提供来自沼泽的地区的干草。

The result indicated that: with the change of ecological factors and intensification of human activities,strong stability of grassland community structure of the local alpine meadow type along the highway in this region was found,proportion of medium xerophilous、rhizomous grass increased;alpine grassland community had relatively low stability,grassland community successed naturally to adapt to the new environment;...

结果显示：随着生态因子发生变化和人类活动的加剧，该区公路沿线高寒草甸类草地群落结构表现出了较强的稳定性，中旱生耐旱的根茎型禾草比重有所增加；高寒草原植物群落稳定性相对较差，草地群落为适应新的生境而发生了自然演替；沼泽化草甸亚类草地植物群落中群落伴生种的种类增加，优势种嵩草属植物在群落中的比重有所下降。

Wetland reduces 263122.5 hm2 from 1954 to 2000. The cultivated land increase engrosses lots of grassland and wetland; the woodland decreases except from 1954 to 1976;the village and town construction expands.

结果表明：整个时段耕地和城乡用地面积增加，草地和沼泽湿地面积减少，林地和水域除1954～1976年呈增加外，其他时段呈现减少的趋势。

Main factors in different seasons have been known, Fractal character of the distribution pattern. the Box dimension, Information dimension and corelative dimension of the D.

有鉴于此，本文以三江平原草地的优势植物小叶章为研究对象，选择典型草甸、沼泽化草甸、沼泽三个具有代表性的小叶章群落。

In this paper, four different representative grassland types in Eastern Qilian Mountains were selected to be experimental samples. They were Polygonum meadow, Grass steppe, Swamp meadow and Kobresia meadow.

本文选取东祁连山四种具有代表性的高寒草地植被类型作为试验样地，即珠芽蓼草地，禾草草地，沼泽草地，嵩草草地。

Seven different representative vegetation types of alpine grassland in Eastern Qilian Mountains, which were Rhododendron fruticosa shrub land, Salix cupularis fruticosa shrub land, Dasiphoru fruticosa shrub land, Polygonum grassland, Grass steppe, Swamp grassland and Kobresia grassland were selected to be experimental samples.

本文选取东祁连山七种具有代表性的高寒草地植被类型作为试验样地，即杜鹃灌丛(Rhododendron fruticosa shrub land)，高山柳灌丛(Salix cupularis fruticosa shrub land)，金露梅灌丛，珠芽蓼草地，禾草草地，沼泽草地，嵩草草地。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。