Posts tagged ‘nature’

26/09/2013

Fossil fish find in China fills in evolutionary picture

Reuters: “An international team of scientists in China has discovered what may be the earliest known creature with a distinct face, a 419 million-year-old fish that could be a missing link in the development of vertebrates.

The fossil find in China’s Xiaoxiang Reservoir, reported by the journal “Nature” on Thursday, is the most primitive vertebrate discovered with a modern jaw, including a dentary bone found in humans.

” finally solves an age-old problem about the origin of modern fishes,” said John Long, a professor in palaeontology at Flinders University in Adelaide.

Scientists were surprised to find that the heavily armoured fish, Entelognathus primordialis, a previously unknown member of the now extinct placoderm family, had a complex small skull and jaw bones.

That appeared to disprove earlier theories that modern vertebrates with bony skeletons, called osteichthyes, had evolved from a shark-like creature with a frame made of cartilage.

Instead, the new find provides a missing branch on the evolutionary tree, predating that shark-like creature and showing that a bony skeleton was the prototype for both bony and cartilaginous vertebrates.

“We now know that ancient armoured placoderms gave rise to the modern fish fauna as we know it,” said Long, who was not part of the team in China.

Long described the discovery as “the most exciting news in palaeontology since Archaeopteryx or Lucy”, referring to two fossil discoveries that are crucial to our understanding of the evolution of birds and humans.”

via Fossil fish find in China fills in evolutionary picture | Reuters.

14/09/2013

Holding back the sands of time

China Daily: “Desert dwellers are slowly reclaiming cultivatable land, as Cui Jia and Mao Weihua report from Hotan, Xinjiang Uygur autonomous region.

Holding back the sands of time

Hotan prefecture in the southwest of the Xinjiang Uygur autonomous region is famous for two things: jade and sand. The locals still try to pluck the precious stones from the dry bed of the Yurungkash River, also known as the White Jade River, but the rising value of jade means the place has almost been picked clean after repeated treasure hunts, so the chances of making new discoveries are slim. However, in this area bordering the Taklimakan, the world’s second-largest desert, the sand will never disappear.

Almost every one in Hotan lives close to the more than 300 oases, large and small, that are dotted around the southern edge of the Taklimakan. Those enclosed by the desert only account for 3.7 percent of Hotan’s total area. As a result, people have to cope with windborne sand for more than 260 days a year. On a bad day, they have to be prepared to seek cover from sandstorms, which can blacken the sky within minutes and without warning. In addition to the health problems posed by the storms, sand carried at high speed can erode buildings and strip the paintwork from vehicles.

A new artificial greenbelt in Hotan county in the Xinjiang Uygur autonomous region. Photos by Mao Weihua / China Daily

In Hotan, the transition between oases, fed by the floodwater from northern Hotan’s Kunlun Mountains, and the desert is almost instantaneous. One minute the scenery along the road is pure yellow desert and the next, tall poplar trees on both sides of the road suddenly begin to provide comfortable shade from the searing heat.

“At the current rate, the prefecture has been losing 33 square kilometers of oases every year, due to the invasion of the Taklimakan and the construction of infrastructure. Meanwhile, the local population is booming, so we have no choice but to create about 66 sq km of oases every year,” said Chen Baojun, Party chief of the prefecture’s forestry bureau, who has 20 years experience in desertification control.

He said the sand from the Taklimakan can be carried as far away as Beijing and sometimes even as far as Japan, meaning control of desertification in Hotan has both a national and international resonance.

Qira county was once a kingdom on the ancient Silk Road in the days of the Eastern Han Dynasty (AD 25-220). The county seat has relocated north three times because the sands have eaten up the cultivatable land. The first relocation occurred more than 2,000 years ago and the most recent about 620 years ago.

In the 1980s, the county seat faced yet another relocation because the desert was only about 1.5 km away. Many locals were forced to move because their houses were buried under sand, often overnight.

It was at that point that the government stepped in to provide measures against desertification. In the days before the measures, the locals tried to prevent the sand from encroaching on their homes by erecting fences around the houses, said Chen.”

via Holding back the sands of time[1]|chinadaily.com.cn.

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29/07/2013

China to Launch 24-Hour Live Web Broadcast of Pandas at Chengdu Research Base

WSJ: “To kittens and puppies, now add the latest species for couch potatoes to gush over: giant pandas.

China’s Chengdu Research Base of Giant Panda Breeding has launched a free 24-hour live Internet broadcast of the cuddly critters, state-run Xinhua news agency said Monday.

Viewers can watch the pandas at the base in southwestern Sichuan province, part of their native domicile, via 28 cameras planted in five areas that will feed six channels: “garden for adult pandas,” “kindergarten,” “nursery for twins,” “mother-and-child playground,” “No.1 Villa” and “featured.”

In keeping with the bears’ famously laid-back characteristics, the broadcasts have an addictively soporific feel to them, based on China Real Time Report’s viewing of several clips the base posted as sneak peeks.

In one clip, two giant pandas sprawled motionless amid quivering leaves and small skittish birds on an elevated loft. About two minutes later, the angle shifted to a second camera, with the two pandas now seeking refuge from what appeared to be fairly tepid sunlight. In short order, another giant panda lay prone by a burbling stream, in the thrall of what appeared to be another pleasant nap.

The Chengdu base is home to more than 80 freely roaming giant pandas, so it’s unclear whether the subjects are different bears or the same few viewed from various angles.

A few minutes later, the panda by the stream changed his snoozing posture slightly. It’s a small maneuver, but rendered suddenly dramatic by the enervating lull of the video feed and the sheer celebrity of the monochromatic bear. So it comes as no surprise that the clips have already attracted nearly 15,000 viewers since their launch on June 24, Xinhua said.

“I’ve watched an entire morning of pandas eating bamboo, my appetite has improved!” a blogger called Janice Yi wrote on China’s Twitter-like microblogging service Sina Weibo. “They eat, then they fight, and when they’re tired of fighting, they eat again, then they sleep, and a whole day passes.””

via China to Launch 24-Hour Live Web Broadcast of Pandas at Chengdu Research Base – China Real Time Report – WSJ.

19/10/2012

* Water scarcity compounds India’s food insecurity

To add to India’s many owes, now we have a water scarcity issue. This issue also features in the China-India rivalry, as many of the large rivers in north India has the Tibetan plateau as their source.

Reuters: These are the personal views of Siddharth Chatterjee  and do not reflect those of his employer, the International Federation of Red Cross and Red Crescent Societies.

“Since India’s independence, the mammoth task of feeding its hundreds of millions, most of whom are extremely poor, has been a major challenge to policymakers. In the coming decades, the issue of food insecurity is likely to affect almost all Indians. However, for the poorest amongst us, it could be catastrophic. India ranks 65 of 79 countries in the Global Hunger Index. This is extremely alarming.

In the past few years, uneven weather patterns combined with over exploited and depleting water resources in various parts of India have wreaked havoc on food security, particularly for small and marginal farmers, as well as the rural poor.

The recently launched Global Food Security Index (GFSI) estimates that in 2012, there are 224 million Indians, around 19 percent of the total population, who are undernourished. The same report also estimates that while the Indian government has various institutions designed to deal with the impact of inflation on food prices, it only spends 1 percent of agricultural GDP on research to build food security for the poorest. Overall, India ranked 66th on the GFSI. It is estimated that one in four of the world’s malnourished children is in India, more even than in sub-Saharan Africa.

Water insecurity, further exacerbated by climate change, is arguably the most important factor for India’s food security. India’s total water availability per capita is expected to decline to 1,240 cubic metres per person per year by 2030, perilously close to the 1,000 cubic metre benchmark set by the World Bank as ‘water scarce’.

Factors such as increasing usage, poor infrastructure, and pollution have led to a decline of water quantity and quality in India. Climate change, meanwhile, is expected to cause a two-fold impact.

One, increasing temperatures have hastened the rate of melt of the Himalayan glaciers, upon which major Indian rivers like the Ganges, Indus and Brahmaputra depend.

Second, the effect of climate change on monsoons in India will cause them to become more erratic, arriving earlier or later and lasting for shorter, more intense periods of time. India’s farming communities depend overwhelmingly on the monsoon, as their cropping patterns are built around it. The combined effect of climate change and over exploitation is violating the water cycle, degrading aquifers and  eroding ground water resources.

Over 50 percent of agricultural land in India depends entirely on groundwater. In North and Northeast India, where perennial rivers (rivers that have water year round, i.e. glacier fed rivers in India, such as the Ganges) sustain the agricultural land, have to deal with issues such as flooding caused by climate change impacts such as speedier glacier melt and erratic monsoons.

Meanwhile, farmers in states in West and South India, where rivers are seasonal, have to depend heavily on rapidly depleting groundwater resources.

The worst affected by this type of water-fuelled food insecurity are the small farmers of India. Estimates suggest that between 1995 and 2010, over 2,50,000 farmers in India, mostly from states like Andhra Pradesh and Maharashtra, killed themselves. Most of these farmers were drowning in vicious cycles of debt caused by failed monsoons and increasing droughts.

Responses to this crisis, including the National Action Plan on Climate Change, lay out various solutions and intended interventions, but most focus on the long term. To secure the future of India’s water resources vis-à-vis its agriculture in the future, it is important that certain steps be taken immediately. First and foremost, authorities will have to remove the mindset that water is an endless resource and the solution to water woes is simply a further development of India’s fast depleting groundwater.

Indeed, Dr. Mihir Shah, co-Founder, Samaj Pragati Sahayog (SPS) and member of the Planning Commission of India has stated that the ‘era of further water development may be over’ and emphasized that we have to urgently introduce more efficient water management. In this regard, promotion of irrigation efficiency will be crucial in the future.

Systems such as drip irrigation and System of Rice Intensification (SRI) to farmers across India will be essential. It will also be necessary to promote water conservation methods such as rain water harvesting, which has been successful in urban India, in villages as well.

At the same time, reducing inefficiencies and water wastage through conveyance losses will require governmental and NGO support in actions such as replacing faulty pipes and pumps.  Hence, India needs to invest on improving its water productivity, and any capacity to produce more food like rice with less water will be an important contribution to sustainable water and food security.

In short, India is facing a bleak future of becoming water scarce and painfully food insecure. How exactly are the country’s hundreds of millions, who depend entirely on agriculture for their livelihoods, as well as those that depend on agriculture for their food needs, to make ends meet?

Delaying this issue is simply not an option for India as this could lead to increased instability, poor human development and enhance inter-generational poverty. India needs to ensure food security through sustainable development and create resilience amongst the most vulnerable in the country: the poor.”

via From AlertNet: Water scarcity compounds India’s food insecurity | India Insight.

See also: https://chindia-alert.org/political-factors/geopolitics-indian/

02/07/2012

* India to launch $75m mission to forecast rains

BBC News: “India is launching a $75m (£48m) scheme using computer models to understand the south-west monsoonand forecast the rains more accurately, officials say.

Rains have come down pretty heavily this monsoon

Rains have come down pretty heavily this monsoon (Photo credit: Wikipedia)

India receives 80% of its annual rainfall during the summer monsoon between June and September.

A significant shortfall in rain can trigger drought, which can cause great damage to India’s 235 million farmers.

There have been reports that this year’s monsoon has been poor.

“Understanding the monsoon will be a major priority of the government for the next five years,” says Shailesh Nayak, a senior official in the ministry of earth sciences.

He said efforts will be made to understand the rains using computer models developed by the UK and the US and gathering fresh data.

Forecasting the monsoon is a tricky task, as India’s meteorologists have discovered time and again.

Last year they predicted a bad monsoon, but in the end the rains turned out to be in excess of what was forecast.

The Indian Meteorological Department (IMD) admitted later that it was “not very accurate” in its forecasts.

In its 137-year history the IMD has never been able to predict a drought or a flood – the two extremes of a monsoon season – successfully.

Experts say scientists all over the world struggle to forecast weather patterns.

They say the IMD does a “commendable job, putting its reputation on the block” by making monsoon forecasts every year.

Monsoon watchers like Prof J Srinivasan from the Indian Institute of Science says seasonal forecasts for drought and floods are relatively accurate for the Sub-Saharan region in Africa, but no agency in the world has ever been able to predict a drought or flood for the Indian region.”

via BBC News – India to launch $75m mission to forecast rains.

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