沙丘

In fixed sand, the quantity of bacteria and actinomyces was the highest in spring, but the quantity of fungi was the highest in winter, and the least in autumn.

在固定沙丘中，细菌和放线菌的数量都是在春季最大，而真菌的数量是冬季最多，秋季最少。

But beach berm and aeolian dunes are poorly developed.

但滩肩和海岸沙丘发育均不明显。

Analyse of Aeolian sandy fluidness on dune surface.

沙丘表面的沙粒流动性分析。

Patterns in Nature: Sand Wind polishes Egypt's Western Desert sand dunes to fine alabaster.

沙在自然界的模式。风打磨埃及西部沙漠的沙丘，以优良雪花石膏。

The results showed the seeds of ephemerals mainly distributes in 0～5 cm soil and there are few seeds under the 5 cm soil.The density of the seed banks is different among the different parts of the sand dune.The density decreases gradually from the foot to the top.

结果表明：短命植物种子主要集中分布于地表0～5 cm土壤中，5 cm以下土壤中极少存在有活力的种子；沙丘间及沙丘不同部位的种子库密度大小不同，密度自坡底随高度增加逐渐减少，坡底、坡中部及坡顶部密度分别为124粒/m2、91粒/m2、66粒/m2。

The density of the foot 、middle part and top are 124grain /m~2、91 grain /m~2、66 grain /m~2,the seeds is more little windward than the leeward.The density of seed banks in windward is 81grain/m~2 and the leeward density is 100grain/m~2.The seed of ephemerals bourgeoning reaches the pinnacle on April and May.The diversity of different parts sand dune is different,but the differences do not reach the marked level.The similarity is high between the seed banks and the vegetation.

迎风坡种子库密度比背风坡面少，迎风坡种子库平均密度为81粒/m2，而背风坡种子库平均密度为100粒/m2；短命植物种子在4月上旬达到萌发高峰，沙丘不同部位物种多样性存在差异，土壤种子库和地上植被存在较高的相似性，此外短命植物在沙丘不同部位的分布存在较高的空间异质性。

Yet, the curious thing about this development is that if you start with a soggy 100-acre swamp, rather than a field, or with the same size lot of Michigan dry sandy dunes, the initial succession species are different (sedges in the swamp, raspberries on the sand), but the mix of species gradually converges to the same end point of a hardwood forest.

然而，奇怪的是，如果这块新开发地开始是100英亩潮湿的沼泽区，而不是一块田地，或者换成同样大小的密歇根干燥多沙的沙丘，那么最初来接管的物种是不同的（沼泽上会是莎草，沙丘上会是覆盆子），但是物种的混合逐渐向同一个终点会聚，就是阔叶林。

After the dunes, such as tree cover, Kou looming, like the clouds as stunning; psammophila, Mao Liu dotted on the sand dunes, like the reed in Lake Naivasha, a clusters of, clumps, clusters of color is different clumps posture dissimilar; breeze light Buddha, Ying Chi's green like a lake-like rippling blue waves.

沙丘后如盖的树寇若隐若现，像云朵般美伦美奂；沙柳、毛柳点缀在沙丘上，恰似沙湖中的芦苇丛，一簇簇，一丛丛，簇簇色不同，丛丛姿相异；微风轻佛，盈尺的绿草犹如湖水般碧波荡漾。

6 J;|# U2 F1 K Tik,"this one is Greater Sand Plover and this one is Lesser Sand Plover"{Tik can identify each bird right away now, much improved from last trip that he saw all are the same}7 i3 m k8 p a8 f3 m

图16：Tik：&这只是沙丘大鸻，另一只是沙丘小鸻&（现在Tik能够区别每只鸟了，和上次旅程这些鸟在他眼里全是一样相比，进步很多

One grain of sand cannot avalanche, but pile up enough grains of sand and you get a dune that can trigger avalanches.

一粒沙子不能引起沙丘的崩塌，但是一旦堆积了足够多的沙子，就会出现一个沙丘，进而也就能引发一场沙崩。

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。