Wednesday, September 25, 2013

Chinese government sees its own reflection in water crisis

Chinese government sees its own reflection in water crisis
By David Stanway, Reuters
BEIJING | Mon Sep 23, 2013 6:11am EDT

(Reuters) - For China, global warming has become something of a
convenient truth.

Beijing blames climate change for wreaking havoc on scarce water
resources, but critics say the country's headlong drive to build its
industrial prowess and huge hydro projects are just as responsible.

On the eve of a global climate change conference in Stockholm, a U.N.
climate body says shrinking glaciers in central Asia and the Himalayas
would affect water resources in downstream river catchments, which
include China.

"Some regions are already near the critical temperature threshold," the
Intergovernmental Panel on Climate Change (IPCC) said in a draft summary
report obtained by Reuters.

"In parts of Asia, increases in flood and drought will exacerbate rural
poverty, due to negative impacts on rice crops and increases in food
prices and costs of living."

Rising temperatures are likely to speed icecap melting in the Himalayas,
which could bring first floods and then severe drought, with diminished
seasonal melts unable to replenish China's rivers, including the mighty

This year, China published a national "water census" showing that as
many as 28,000 rivers logged in a government database had vanished since
the 1990s, leaving just under 23,000.

The census gave no reason for the disappearance, but China's weather
bureau said several major rivers, including the Yellow River, a massive
northern waterway linking nine provinces, had been dwindling since 1970
and the trend was likely to continue.

"We have witnessed major fluctuations in precipitation in different
parts of China," said Ma Jun, a water expert and director of the
Institute of Public and Environmental Affairs (IPE), which monitors
China's rivers.

"One thing in the mind of policymakers and researchers is that climate
change will add to uncertainties -- in some areas, the water supply
situation is already quite tense."

But rising temperatures are only part of China's problems, many of which
have resulted from overpopulation, aggressive industrialization and a
huge reliance on elaborate engineering schemes to irrigate crops and
harness scarce supplies.

"China's water shortages stem more from problematic urbanization and
water resource management, rather than the scapegoat of climate change,"
said Zhou Lei, a fellow at Nanjing University who studies how industry
affects the environment.

"In my home town in Jiangxi, the water system consisted of underground
springs, ponds, wetlands, brooks, streams, and seasonal rivulets, but
all these have been totally ruined in the last 20 years due to a
catastrophic urbanization plan, a construction mania and transport
megaprojects," he said.


China has vowed to spend trillions of yuan to boost supplies, clean
rivers and protect water tables.

But even if supplies remain steady, water resources per person, now at
2,100 cubic meters or 28 percent of the global average, are expected to
decline further as the population grows.

At the same time, Beijing still needs to feed its growing food, energy
and industrial demand.

Hundreds of rivers have already vanished in northwestern Gansu, one of
the country's driest regions.

In the town of Minqin, residents said the problem was not new, with the
nearby Shiyang river disappearing not because of temperature rises, but
because a vast upstream reservoir built two decades ago to irrigate a
large farm cut off their supply.

China has long sought to wring as much water as it can from its parched
earth, but is approaching the limits of what it can retrieve.
Projections expect total annual demand to reach 700 billion to 800
billion cubic meters by 2030, only slightly lower than total available

"In the last 50 years we have mainly focused on expanding water
supplies, but at this moment I think we have in many areas reached our
limit and we need to shift our focus to conservation," said Ma.

The reliance on megaprojects to solve shortages has created a vicious
circle, channeling water to state-owned farms, giant industrial plants
or hydropower stations, diverting natural flows and leaving surrounding
areas more parched than before.

Some regions desperate for growth have been forced to choose between
water and energy. Gansu plans to build several giant hydro plants in the
upper reaches of the Yellow River, defying warnings that this could
restrict downstream water supplies.

Elsewhere, green groups say scarce water resources are being diverted
from agriculture to profitable coal-fired power plants, with China
building thirsty "coal production bases" in dry areas such as Inner
Mongolia, Ningxia and Shaanxi.

But even flood-prone southwestern provinces have suffered from droughts
once regarded as unthinkable.

In Yunnan, dozens of rivers have been dammed to generate power, and
complex canal systems built to improve irrigation.

Water diversion has made shortages more likely. Several rivers in the
province have dried up over the last decade, and drought has been
common. In April, hundreds of wells and streams dried up, creating a
crisis for thousands of farmers.

"China is looking always at megaprojects rather than addressing the root
causes," said Zhou.

"They experiment with technologies to treat the problem, like the water
transfer projects being done right now, but they are draining resources
in a very wrong way."

China has put its faith in elaborate engineering and technological
solutions such as giant dams and diversion channels, besides cloud
seeding and desalination.

Its biggest megaproject of all is a vast system of canals known as the
South-North Water Diversion project.

Opponents say the project, designed to connect the flood-prone Yangtze
with the drought-hit Yellow river through three cross-country canals,
including one in the far west, where the two rivers originate, could
worsen shortages.

"The negative impact of these big engineering projects could be quite
serious and some of the problems could be transferred to other areas,
especially in the west," said Ma.

"We spent our resources mainly on engineering and on technologies to
drill deeper, build dams and work on water diversion projects, but we
need to work on conservation."

(Additional reporting by Alister Doyle in OSLO and Carlos Barria in
MINQIN, China; Editing by Clarence Fernandez)

You received this message as a subscriber on the list:

To be removed from the list, please visit:

No comments:

Post a Comment