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備註請放最後面 違者新聞文章刪除

1.媒體來源:

外媒    space.com

2.記者署名:

By Sharmila Kuthunur

3.完整新聞標題:

Beavers are helping fight climate change, satellite data shows

衛星證實河狸正在嘗試解救地球

4.完整新聞內文:

Beavers are helping fight climate change, satellite data shows
By Sharmila Kuthunur published 16 hours ago

Satellites reveal denser green patches of vegetation where beavers were
reintroduced.

衛星顯示，河狸被重新引入的地方有更茂密的綠色植被。

A beaver floating in the water.

一隻河狸漂浮在水中。

Scientists are using satellite data to identify streams where beavers can be
reintroduced to help boost the local ecosystem. (Image credit: NASA)

科學家正在利用衛星數據來識別可以重新引入河狸的溪流，以幫助促進當地生態系統的發
展。 （圖片來源：美國太空總署）

As global warming intensifies droughts, floods and wildfires around the
world, scientists in western United States are turning to beavers to help
reverse some of the damage.

Scientists at Utah's Boise State University and Utah State University are
using satellite data to identify streams where once-eradicated beavers can be
re-introduced to boost vegetation. They're also recording how water abundance
and vegetation bordering those streams changes once beavers return — metrics
of environmental health.

隨著全球暖化加劇了世界各地的乾旱、洪水和野火，美國西部的科學家開始利用河狸來幫
助扭轉一些損失。



"The real value of using satellite data for monitoring is that there are
people on the ground working hard and implementing things like increasing
water availability, increasing fish and species habitat," Jodi Brandt, an
associate professor at Boise State University who leads a team using
satellite data to quantify the impact of beavers on local ecosystems, said in
a previous NASA statement. "The more support we can give them, the more
broadly these practices can proliferate."


更廣泛的推廣。”

Beavers are "furry weapons of climate resilience," according to one New York
Times article. They are innately wired to build dams on rivers and streams, a
measure of protection from predators like bears, cougars and wolves. These
dams, composed of materials sourced from trees, branches, twigs, stones and
grasses cut by beavers' teeth, slow the flow of water that would otherwise
gush through the region, according to the National Park Service. The pools
subsequently created by the dams then offer a safe haven for the beaver to
build their oven-shaped dens while also boosting green vegetation — in turn,
this reduces the risk of forest fires and mitigating the effects of droughts
and floods that have become increasingly frequent and severe in recent years
due to human-induced global warming.


日益嚴重的乾旱和洪水的影響。

A 3-month-old beaver kit enjoys its new home after its family was relocated
from a concrete drainage ditch in urban Aurora, Colorado, to a private ranch
in the foothills of the Rocky Mountains. (Image credit: Sarah Koenigsberg)

一隻三個月大的河狸幼崽從科羅拉多州奧羅拉市的一條混凝土排水溝搬到了落基山脈山麓
的一個私人牧場後，正在享受它的新家。（圖片來源：莎拉· 科尼斯堡）

Until the late 1800s, beavers had been common in lakes, streams and marshes
throughout North America. However, unregulated trapping driven by a new
demand for beaver fur reduced the animal's population from as many as 400
million beavers in the 1600s to just 10 million to 15 million today,
according to the California Department of Fish and Wildlife.

直到 1800 年代末，河狸在北美各地的湖泊、溪流和沼澤中都很常見。然而，根據加州魚
類和野生動物部的數據，由於對河狸皮毛的新需求，不受管制的誘捕行為導致河狸數量
從 1600 年代的 4 億隻減少到如今的 1000 萬至 1500 萬隻。

In response to the decline, California, Idaho and Utah are among a handful of
U.S. states that have recently launched major beaver restoration programs.
Sure enough, data from a NASA satellite shows denser patches of green
vegetation where beavers have been reintroduced when compared to areas where
their population is limited. For instance, a stream near Preston, Idaho, is
now flowing 40 days longer into the year thanks to over 200 beaver dams that
appeared after ranchers began beaver rewilding, according to a previous NASA
statement.



A diagram showing where beavers were relocated and where they were note as
well as the differences between the areas.

這張圖顯示了河狸被重新安置的位置、它們被記錄的位置以及區域之間的差異。



NASA Landsat data helps identify streams where beavers can be reintroduced to
help improve an ecosystem. The vegetation in this satellite image indicates
where streams or creeks are flowing and reveals the benefits of beaver
activity. (Image credit: NASA)

"Prior to beaver trapping, beaver dams were just about everywhere in the
west. So what we're attempting to do is to bring beaver dam densities back to
historic levels where possible," he said. "In doing so, we're building
important drought resiliency and restoring stream areas."



The online Beaver Restoration Assessment Tool, or BRAT, uses data from NASA's
Landsat and European Sentinel satellites to spot restoration sites that would
benefit the most from beaver-led reintroduction. The tool takes into account
available trees that beavers could use for building dams, thereby increasing
water flow, vegetation and supporting in-place human infrastructure. Once the
researchers choose a site, they attract beavers by constructing temporary
beaver-dam-like structures that make the area more hospitable for beaver
families.



荒山之中鬱鬱蔥蔥的景色。

A view of a lush area amid barren mountains.

Beaver dams and canals create wetlands and retain water, providing a
wildfire-resistant safe haven for wildlife and speeding post-fire recovery,
as this region in Baugh Creek, Idaho, shows. (Image credit: Schmiebel, CC
BY-SA 4.0)



Using satellite data allows researchers to not only kickstart these
decades-long restoration efforts but also monitor the results over time, for
which there are often insufficient funds available, Brandt said in a recent
NASA statement. She noted satellite data can also provide empirical evidence
of the restoration efforts which can be used to boost funding and support
from federal agencies, conservation groups, land trusts and other businesses.



"That's what applied science is all about – getting the users whatever is
needed for environmental decision making," Cindy Schmidt, an associate
program manager for NASA Ecological Conservation effort, said in the
statement. "The future of our planet relies on these commercial partners
working with us to do things more sustainably."

美國宇航局生態保護工作副項目經理辛迪· 施密特在聲明中表示：“這就是應用科學的意
義所在—為用戶提供環境決策所需的一切。” “我們星球的未來依賴這些商業夥伴與
我們合作，以更可持續的方式開展工作。”

5.完整新聞連結 (或短網址)不可用YAHOO、LINE、MSN等轉載媒體:

https://www.space.com/beaver-dam-nasa-satellite-data

6.備註:

你以為的地球超人

https://www.youtube.com/watch?v=leNb3Qqq20s

真正的地球超人

https://www.youtube.com/watch?v=_fESNHnXJO4


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※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 1.34.17.2 (臺灣)
※ 作者: STAV72 2024-04-28 15:31:15
※ 文章代碼(AID): #1cBVj6Ic (Gossiping)
※ 文章網址: https://www.ptt.cc/bbs/Gossiping/M.1714289478.A.4A6.html