草地

With different scenarios sediment discharge followed by grassland＞shrubland＞broad-leaved woodland＞orchard＞coniferous woodland,among the scenarios grassland made sediment diacharge increase while the others made sediment discharge reduce.Along with the forest cover increased,the runoff and sediment discharge decreased;meanwhile the sediment discharge had the maximum rate of descent with the forest coverage rate between 40-70%.

不同情景的输沙量依次为草地＞灌木林地＞阔叶林地＞园地＞针叶林地，与原地类比较草地使模拟输沙量增加，其余的情景都使模拟输沙量减少；不同森林覆盖率情景下年均径流和输沙量都随森林覆盖率的增大呈下降趋势，森林覆盖率在40-70%之间的输沙量下降速率最大。

The study on water use of the alfalfa grassland and stipa bungeana grassland in Ningxia Yanchi.

宁夏盐池长芒草天然草地和苜蓿人工草地水分利用研究。

The 0-40cm soil layer soil mean value looked that mixes by the interlacing broadcasts the lawn soil ulmin, the alkaline hydrolysis nitrogen content to be highest; The fast-acting phosphorus, the fast-acting potassium are highest by the unicast awnless brome lawn content; The colleague mixes broadcasts lawn pH to be biggest.

无芒雀麦对土壤要求不严，耐贫瘠、严寒，耐碱性也较强，需氮较多，适宜与紫花苜蓿、沙打旺、野豌豆、百脉根、红三叶等豆科牧草混播，借助豆科牧草固氮作用，促进无芒雀麦良好生长[4]。本实验就是无芒雀麦单播草地和与紫花苜蓿混播草地对土壤理化性质的影响进行比较。

The visible and near infrared channels of ASTER data were used to classification to obtain the underlaying surface types.

下垫面的热惯量与城市热岛强度的相关性是通过其相关系数来表征的，研究表明各下垫面类型热惯量与热岛强度都存在负相关的关系，不同时间、不同下垫面的相关程度不同，2004年1月27日最高的负相关是林地(-0.3970)，稍高的是道路(-0.3549)和水体(-0.3140)，然后是建筑物(-0.2941)，最低的负相关是草地(-0.2883)；而8月31日最高的负相关是水体(-0.5683)，稍高的是林地(-0.4882)和草地(-0.4697)，然后是建筑物(-0.1811)，最低的负相关是道路(-0.1403)。

Grasslands play a significant role in terrestrial ecosystem carbon cycle due to large biomass stored belowground.

温带草地大部分生物量分布在地下，地下生物量在草地生态系统碳循环中起着重要作用。

We have set up the following targets on greenhouse gas emission control to be met in 2010: cut energy intensity by around 20 percent from the 2005 level, increase the share of renewable energy in primary energy supplies to 10 percent, keep industrial emissions of nitrous oxide at the 2005 level, increase forest cover to 20 percent, add 24 million hectares of grassland, treat 52 million hectares of degraded, sandified and alkalinized grassland, increase the share of nature reserves to about 16 percent of China's total landmass, and treat 22 million hectares of desertified land.

我们明确提出了控制温室气体排放的具体任务，包括到2010年实现单位国内生产总值能源消耗比2005年降低20%左右、可再生能源在一次能源供应结构中的比重提高到10%、将工业氧化亚氮排放稳定在2005年水平，同时努力实现森林覆盖率达到20%、新增改良草地2400万公顷、治理退化和沙化及碱化草地5200万公顷、自然保护区面积占国土总面积比例达到16%左右、治理荒漠化土地面积2200万公顷等。

It was also important factor causing deterioration that grazing lead to soil erosion, surf ace crusting and interrelation action.

分析人工草地的饲用价值及其退化原因，笔者认为，适度放牧不但保持草地的较高利用价值，而且是维系群落稳定防止退化的重要措施。

Again, the analogy of the no-till soil to permanent sod has relevance. How would a permanent sod be limed?

和免耕土壤类似的永久性草地也一样，永久性草地上又怎样施石灰呢？

Since yesterday Federer has been realizing that his way to the Grand Slam is much more complicated because, in the tournament which is the hardest and at the same time the trickiest for him - Roland Garros -, he will have to face the Spaniard who, on clay, is more prodigious than him.

如果全年的赛事在红土举行世界第1当然是纳达尔，因为从05赛季以来西班牙小子已经保持红土42场不败，同样的道理如果全年比赛在草地或者硬地举行世界第1肯定是费德勒，温网已经三连冠的奶牛在草地2-3年内将几乎没有对手。

Of course, there may be interaction between overgrazing and climate change.

但气候的干旱化给过牧对草地的影响起到了推波助澜的作用，其叠加效应加速了草地的退化沙化。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。