The news of the Yellow River also made the people in Han Chang'an serious.

After all, if you seriously summarize the merits of the Han Dynasty and work together to control the disaster of the Yellow River, it can definitely be regarded as one.

Fa Zheng, who was born in Sanqin, is quite familiar with this:

"In the third year of Yuanguang, the river broke the Puyang gourd embankment, and the flood rushed into the water of Juyeze and Huaisi, flooding the sixteen counties. The emperor's order was to be darkened, and Zheng Dang led 100,000 people to block the mouth. ”

Speaking of which, Kong Ming also thought about it at this time, and his tone was full of emotion when he recalled it:

"A year before the collapse of the gourd embankment, the plot of Ma Yi was defeated, the Xiongnu frequently invaded the north, Emperor Xiaowu refused to negotiate with his relatives, and the grace of Emperor Hou De, the champion of Changping, frequently went out of the fortress, and broke the Xiongnu in the north of the desert, so that there was no royal court in the south of the curtain, and the north was peaceful."

This is a piece of history that the Han people will remember today, and Emperor Xiaowu faced the same situation of internal and external troubles, and finally resolutely refused to make peace, wanting to achieve a hundred years of success.

In the context of the start of the Han-Hungarian War, Ji Di, Zheng Dang and others led 100,000 blockages that were all the strength that the imperial court could draw out at that time.

At that time, the Han Dynasty faced the Huns, and took advantage of the prestige of the Marquis of Changping and the champion Hou to chase away the wolf Juxu in Mobei.

Internally, however, the flooding of the Yellow River was a complete failure.

The next decisive battle between the Han court and the Yellow River would not be until twenty-three years later, and Liu Bei was quite clear about this:

"In the second year of Yuanfeng, Emperor Xiaowu sent tens of thousands of people to repair the gourd embankment, so that the generals and the ministers below all needed to participate in the plugging and go to the gourd embankment in person."

"After the success, he made "Gourd Song" and built the Xuanfang Palace to mourn it."

Hundreds of civil and military officials participated in the blockage, and the Yulin Army, the emperor's personal army, also participated in the blockage, and hundreds of civil and military nobles died.

This is a period of time that today's Han'er is all remembering, and Liu Bei does not deny that the Jing'an Temple established after discussing with Kong Ming also refers to the practice of this ancestor.

And the rest of the ...... Three years later, the Marquis of Changping died, Li Ling and Li Guangli all surrendered to the Huns, the exhausted people after the war was frustrated and it was difficult to support, two million displaced people in Guanzhong, the world was wasted, people cannibalized, and ten years later, Emperor Xiaowu issued an edict against himself......

"Emperor Xiaowu's prosperity is open, starting from the breaking of the gourd embankment to the end of the gourd embankment."

Liu Bei sighed leisurely, and his complicated feelings about the Yellow River at this time were simply beyond words.

Because in addition to Emperor Xiaowu, this dynasty also fought against the Yellow River.

When Wang Mang rebelled, the Yellow River burst in Yuancheng, Wei County, and several counties east of Heqing County were affected, and Wang Mang did not care about the flood for more than 60 years.

Until the time of Emperor Xiaoming, the imperial history of Wang Jing ruled the water, and the Yellow River has been stable until now, so that the Han Dynasty has not been affected by the Yellow River for nearly two hundred years.

In the end, Pang Tong tried to make a summary:

"The Yellow River is smooth, and the world is peaceful?"

Kong Ming was noncommittal, just staring at the map thoughtfully.

Later generations praised the Tang Dynasty for inheriting the blessings of the climate and the abundance of the environment, so they did not know the importance of grass and trees, so that they could cultivate excessively.

These problems also exist in the Han Dynasty, and because the population is not large now, and the climate is relatively cold, they are not obvious.

The word "briquette" was written in the notebook, and it seems that this thing is more important than imagined.

At the same time, Kong Ming also wrote the four words "Yellow River model": I wonder if I can use the model to represent the disaster of the Yellow River after soil erosion?

After all, the hanging river scenery on the ground only needs to think about it, and if it really collapses, I am afraid that the murder will be rare in ancient times.

[Another well-known problem in the early Tang Dynasty was the frequent occurrence of natural disasters, which was quite famous.

After all, when talking about Erfeng's anecdotes now, it is impossible to avoid swallowing locusts alive.

At that time, Guanzhong was the first to suffer from the drought, and then triggered the locust plague, because of the drought anxious Erfeng was digging a canal with the people in the field to divert water to irrigate the farmland, seeing the locusts flying overwhelmingly at that time, it was estimated that the heart was cold, so it was understandable to angrily catch a locust and chew it raw.

After all, it was only two years of Zhenguan at that time, and the second child of the Li family was really under pressure.

In addition, we have the impression that there were countless natural disasters in the early Tang Dynasty, or take Zhenguan Year as an example.

The two years of Zhenguan's drought and locust plagues have just passed, and in the third year, there was a combination of drought, water, locusts, and frost, and the four years were also very similar to drought, water, locusts, and hail.

The fifth and sixth years of Zhenguan are rare peaceful seasons, and then they have been putting pressure on Erfeng.

For seven years, the sandstorm in Guanzhong in summer, the flood in Henan in Shandong, and the earthquake in Guanzhong in October.

In eight years, the Longyou landslide and the Jianghuai flood in Shandong; Nine years of drought returned; 10 years of floods and epidemics; Eleven years of floods and then earthquakes...... This continued until 658, when the twenty-six years of natural disasters came to a brief end.

But in fact, the number of natural disasters in the middle and late Tang Dynasty was not much better than in the early period, and here is a direct conclusion of our modern scholars specializing in the history of the Sui and Tang dynasties:

"Compared with the previous period, the seismic activity in the late Tang period was more active; More than half of the floods occurred in the middle and late periods, and most of them occurred in summer and autumn. Typhoon disasters occurred more frequently in the later period, and the frequency was highest in June. ”

It can be said that Erfeng may not miss Zhenguan for five or six years without disasters throughout the year until he dies.

But what Erfeng would never have imagined was that Datang's "good days" were all behind.

Earthquakes can be put aside, floods and wind disasters can be talked about.

The climate in the early Tang Dynasty was characterized by warm and humid conditions, also according to the results of today's research:

The 200 years from 630 A.D. were the longest rainy period in China in the past 3,000 years.

It is normal for the proportion of floods to increase due to abundant rainfall, but this time the temperature rise in the Tang Dynasty had already dropped around 700 AD and had returned to the historical average around the time of the Anshi Rebellion.

Therefore, during the rainy period of these two hundred years, the precipitation in the later period was not as abundant as in the early period, but the floods in the late Tang Dynasty could still be more than in the early period, which is unreasonable.

The most plausible explanation is that the destruction of the environment during the Sui and early Tang dynasties further deteriorated the environment by causing soil erosion in the face of abundant rainfall.

Such environments are also less resilient to excessive rainfall, creating a cycle that accelerates environmental degradation.

As a result, the rainfall in the middle and late Tang Dynasty has almost ended, and the natural environment that has come out of this dead cycle is almost over.

The same is true of wind disasters, just like our capital city of Beijing after the founding of the People's Republic of China, there is no forest to lock the soil and resist the wind, so naturally it can only blow strong winds and eat sand every year.

Beijing has had serious sandstorms since the Yuan Dynasty, and they have suffered greatly in the Ming and Qing dynasties.

The reason for this is also because since the Ming Dynasty, China's forest coverage rate has hardly exceeded 15 percent, and the forest coverage rate was only 8 percent when the Qing Dynasty fell.

Now, after returning farmland to forests and planting trees, China's forest coverage rate has reached 23 percent, which is the best time for China's environment in the past 1,000 years. 】

The next one is a little later

(End of chapter)