Rivers,
Borders and Civilization
Major Rivers
China's two major rivers, the Huang He (Yellow River) and the Chang Jiang (Yangzi or Yangtze
River), as well as the Pearl River (Zhu Jiang) delta system marked
by the Xi Jiang (West River) in southeastern China, have provided the
framework for agricultural development and population growth throughout
China's history. Another river, the Heilong Jiang (known also as the
Amur River, its Russian name) marks the border between China and Russia;
at times in the past, this area was one of confrontation between the
neighbors. The drainage basins of China's rivers differ in terms of
extent and topography, offering varying opportunities for agricultural
development. Because some of China's largest rivers have their source
regions on the high Qinghai-Tibetan Plateau and drop great distances
over their middle and lower courses, China is rich in hydroelectric
resources.
Each of these rivers has special characteristics and associated problems
at different locations along their courses. (Note that "he" and "jiang" are
both translated into English as "river." In English, there
are of course many words that differentiate flowing water according
to size and character — stream, brook, creek, river, just for
a couple of examples. In the Chinese language, similar differences
are expressed but the common words usually translated into English
as "river"
can be further clarified somewhat. "Jiang" 江 is the
most common descriptor for
"river" in Chinese, signifying a stream that is often geologically
young which cuts through a narrow valley. "He" 河 ,
on the other hand, is generally used for a river that is broad and
geologically old. In this regard, much of the lower course of the Huang
He is reminiscent of the sluggish Mississippi River while the middle
and upper sections of the Chang Jiang resemble the unruly Colorado
River. It is thus redundant to say Huang He River or Chang Jiang River.)
- Huang He (Yellow River). China's second longest river, the Huang He rises
in Qinghai province and flows some 5464 km to the Yellow Sea. Crystal
clear lakes and sluggish meandering are characteristic in its upper
reaches. Along the Great Bend of the Huang He in its middle course,
the unruly river carves its way through the loessial plateau with
substantial erosion taking place. As the river erodes the loess,
it becomes a "river of mud"
(Loessial soil is called huang tu or "yellow earth" in
Chinese and it is the color of this suspended loess in the river
that has given the Huang He its name "Yellow River.") Carrying
40% sediment by weight in summer (for other rivers in the world 3%
would be considered a heavy sediment load), the river deposits vast
amounts of alluvium as it courses across the North China Plain. Over
the centuries, deposition has raised the bed of the Huang He so that
it is in some ways "suspended" precariously above the lower
surrounding agricultural areas, contained by levees and embankments
built to control what historically was "China's Sorrow"— the bringer of flood and famine.
The lower course of the Huang He has changed 26 times in China's
history, most notably nine times including major floods in 1194 AD
and again in 1853, that brought untold disaster to the villages and
towns of the North China Plain. (See Map of Course Changes of the Huang He.) What was once a scourge that plagued
the Chinese people throughout much of their history continues to
be one of China's great natural challenges — preventing both flooding
and drought in a region with more than 100 million people. Siltation
at the mouth of the Huang He extended the length of the river by
about 35 km (20 miles) between 1975 and 1991. The North China Plain
is indeed a "gift" of the Huang He.
Throughout the loessial uplands, some 40 million Chinese still live
in cave-like or subterranean dwellings that are an especially appropriate
response to the peculiar nature of loess and the absence of alternative
building materials such as timber.
- Chang Jiang (Yangzi River). As China's
"main street,"
this artery courses over 6300 km through several of China's most
economically developed regions. Excellent river ports — Shanghai,
Zhenjiang, Nanjing, Wuhan, Yichang, and Chongqing — are located near
or along the Chang Jiang, making it one of the world's busiest inland
waterways. As much of 40% of the country's total grain production,
70% of the rice output, and more than 40% of China's population are
associated with its vast basin that includes more than 3,000 tributaries.
The flow of the Chang Jiang is some 20 times greater than that of
the Huang He. With its numerous tributaries, the Chang Jiang drains
nearly 20% of China's total area. Its upper reaches tap the uplands
of the Tibetan Plateau before sweeping across the enormous and agriculturally
productive Sichuan Basin that supports nearly 10% of China's total
population. It is in the middle course of the Chang Jiang that the
controversial Three Gorges Dam project is
being constructed.
As a huge public works project — the largest dam in the world,
rivaling the building not only of China's great historical projects
such as the Grand Canal and Great Wall as well as modern projects
elsewhere in the world — the Three Gorges Dam project is wrapped
in environmental, engineering, and political controversy. Increasing
clean energy, controlling floods, and stimulating economic development
are but a few of objectives of the dam. Below the Three Gorges Dam
are the great flood plains of the Chang Jiang as well as the major
tributaries on its north and south banks. At the mouth of the river
is the great and productive Yangzi delta and metropolitan Shanghai.
With the completion of this project, disastrous floods are expected
to be eliminated.
The
second worst flood of the past 130 years struck the Chang Jiang
valley in Summer 1998 and affected 240 million people, killing
some 3656, and leaving 14 million homeless. The flood is estimated
to have left 14 million people homeless, destroying 5 million houses,
damaging 12 million houses, flooding 25 million hectares of farmland,
and causing over US$20 billion in estimated damages. On the adjacent
infrared image, the extensive flooded area is shown in blue, other
water areas in black, vegetation in red, and clouds in white.
- Zhu Jiang (Pearl River) Delta. Situated in Guangdong province
just to the north of Hong Kong and Macao, the delta of the Zhu Jiang
is the most significant farming area in southeastern China. Some
regard it as one of the most productive and sustainable ecosystems
in the world because of its integrated dike-rice paddy-fish pond
agricultural system. Between 1988 and 1995, land
reclamation along the banks of the river and along the coast
added farm land and space for fish ponds as well as created space
for rapidly expanding settlements.
Early Civilizations
Looking at the map of historical borders and the map showing the major rivers highlights the important fact that the earliest
hearths of Chinese civilization developed along its river valleys. One
of the cradles of Chinese civilization, the Neolithic site called Banpo,
was located along a tributary of the Huang He not too far from the present-day
city of Xi'an in Shaanxi province. Hemudu, on the southern shores of
Hangzhou Bay that lies to the south of the Yangzi River delta, is another
of China's important Neolithic sites. The Shang dynasty (c. 1600-1027
BC) was also situated around the Huang He (Yellow River), and eventually
spread southward to the Chang Jiang (Yangzi River) and Xi Jiang.
Mountains and Deserts
The west of China is comprised of mountains and deserts as well as plateaus that do not provide much arable land
for agriculture. Throughout most of history, the civilization that
grew up to the east in what is today China was not surrounded by other
nearby major civilizations. To this extent the Chinese were "isolated" from
competing civilizations although there was a broad and fluid frontier
zone on the western margins. This geographical fact is important to
remember when discussing the Western encroachment on China from the
sea during the late imperial period.
Although the mountains and deserts of the west limited contact between
early imperial dynasties and other centers of civilization in the Inner
Asia, Middle East, South Asia, and Europe, there were some important
and notable exchanges of culture. The legendary Silk Road facilitated
the exchange of goods and ideas between China and each of these areas.
Historical Borders
Like many other countries, the historical borders of china have varied over time. Under the Han dynasty (202
BC-202 AD), China's great historical empire, these early boundaries
were significantly expanded, as the series of historical
maps of China shows. The extent of China's territory was greatest
under the last dynasty, called the Qing (Ch'ing) or Manchu dynasty
between 1644-1912. China's territory was more extensive under the Qing
empire than it is today.
Bordering Nations
China is at the core of a cultural sphere or region known as East Asia.
Looking at the map of bordering nations, it is possible to identify China's neighbors,
some of which received substantial cultural influence from China.
China, Korea, Japan, and Vietnam historically form the East Asian
or Sinitic cultural sphere.
The large number of countries with which China shares borders makes
Chinese foreign policy especially complex (unlike the U.S., for example
which shares borders only with Canada and Mexico).
Supplementing Geography: Great Wall, Grand Canal,
Terracing and Irrigation
The Chinese attempted to correct perceived "deficiencies" in
their physical geography by building massive civil engineering projects
that would help bring about unity and provide defense as well as by
countless smaller scale efforts at modifying their physical landscapes.
- Great Wall. What is known today as the Great Wall (see map of the Great Wall and the Grand Canal) was reputedly first completed
during the Qin (Ch'in) dynasty (221-206 BC) when segments of the
wall existing from earlier periods were connected. Early walled ramparts
were constructed of rammed or tamped earth. The brick-faced walls
seen today were built much later during the Ming dynasty (1368-1644).
Although not a single continuous wall, the Great Wall and its associated
military encampments and guard posts figured in attempts by many
dynasties to manage the nomadic peoples, sometime referred to as
"barbarians," who lived north of it on the grasslands or
steppes. For the most part, the Great Wall should be viewed as a
zone of transition — rather than a fixed border — between farming
areas with sedentary villages and pasture lands with nomadic lifestyles.
- Grand Canal. Since China's major rivers — the Huang He
and Chang Jiang — flow from west to east and there is no natural
communication north to south except by way of a coastal route, the
Chinese dug the Grand Canal as a safe, inland water route between
the two major rivers, in the process connecting a number of minor
regional rivers. Constructed around 605 AD to serve commercial as
well as military considerations, the canal was extended several times,
most notably to the Hangzhou in 610 and eventually in 1279 to Dadu,
the great Mongol (Yuan dynasty) capital. During the Ming and Qing
dynasties which followed the Mongol dynasty, the Grand Canal ensured
that Beijing, the great successor imperial capitals to Dadu, had
sufficient grain from the southern rice bowl areas. The Grand Canal
is the longest artificial waterway in the world and has a long history
of barge traffic along its course. Although many parts of it fell
into disrepair over the years, today it is still possible to traverse
the man-made Grand Canal from Hangzhou, Zhejiang Province northward
1801 km to Beijing.
- Terracing and Irrigation. At least as significant as major
engineering works like the Grand Canal and the Great Wall are the
countless alterations of China's physical landscapes by centuries
of human effort. These human modifications traditionally focused
on terracing hill slopes and controlling water via irrigation as
well as reclaiming marginal land. In managing natural resources and
expanding opportunities for the production of food, the Chinese have
reclaimed, even created, land that in many areas of the world would
have been considered impossible to farm.
- Creating level land through terracing of hill slopes. Throughout
the rugged areas of northern and southern China, farmers over the
centuries have sculpted the hilly land into step-like landscapes
of terraces. Sometimes terraces are relatively natural features that
need only be modified in order to produce level areas for planting,
while in others extraordinary efforts must be carried out to move
earth and rock, stabilize retaining walls, and create sluices for
controlling the flow of water. Drainage control and water storage
are as important as the level land itself.
- Managing water resources in order to reduce erosion and make water
available for terraced rice production. Seen from the air,
much of China glistens with countless water surfaces that have
been created by human labor. The building of terraces on slope
land not only creates level land but also provides a means of "managing" rainwater
by controlling its runoff. As rain falls on hill slopes, it tends
to erode them relatively easily, but when the velocity of the
water is slowed because it is impounded in irrigated fields erosion
is reduced. The impounded water then can be controlled as it
flows gently from a higher level to a lower level. As water falls
from level terrace to terrace, the speed with which the water
flows beyond the fields where it is needed is minimized. Usually
fine silt is suspended in the flowing water that then is deposited
in the lower fields rather than being carried farther away. Besides
the obvious irrigation systems that are fundamental to terraced
rice production, other systems control water flow and drainage
on adjacent paddy fields that are nearly at the same level. Small-scale
and large-scale water conservancy projects continue to be important
means of increasing crop production as well as reducing flood
and drought.
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