I am now in my 50s. I still travel a lot and I've seen yet more of the world's mounting population and some of its remaining wildlands.

我现在50多岁了，仍旧经常旅行，我已经见过这个人口不断增长的世界中的许多人和世界上一些仍未开发的荒野之地。

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If the farmlands and wildlands are close and the percentages of agricultural pollen of farmlands are low, pollen assemblages of the two land types are similar.

如果农田和荒地比较接近，农田农作物花粉含量又比较低，则两种植被类型花粉组合特征就较为相似。

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The percentages of shrubs pollen of farmlands are lower than that of wildlands, and weed pollens are more abundant.

农田中灌木花粉含量低于荒地，杂草花粉类型比荒地丰富；

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The Wildlands Network is sponsoring the logistics of the trip, helping him with equipment, but his journey isn't very extravagant.

CNN: Trekking 5,000 miles to connect man and wildlife

In 1991, he joined the journal "Wild Earth, " and he helped co-found the Wildlands Network, a nonprofit conservation group based in Titusville, Florida.

CNN: Trekking 5,000 miles to connect man and wildlife

"They have some of the most important wildlands in the country, " he said.

CNN: Trekking 5,000 miles to connect man and wildlife