Chapter 619 Weeds.

Chapter 619 Weeds.

Jiang Yuan looked Pang Jidong up and down. To be honest, when it comes to the functionality of forensic botany, he is not as confident as Pang Jidong at the moment.

Pang Jidong looked at Jiang Yuan with excitement, his expression seemed to be saying: See if I guessed it right! I guessed it right!

For the purpose of encouraging teaching, Jiang Yuan asked: "How do you think we can find the burial place?"

"I saw that when you did the eucalyptus project in Litang Township, didn't you use vegetation to find the buried bodies?" Pang Jidong asked.

Jiang Yuan was a little confused by the question, shook his head, and said: "That is much easier, it is a small-scale judgment. And I happened to see it, not specifically looking for it."

"But it should be possible to make a judgment." Pang Jidong had learned it for so many days, and it was really not in vain. Moreover, the main direction of his learning was how to use forensic botanists, rather than actually doing it himself.

Although he knew that what Pang Jidong had learned was quite difficult, based on his current understanding, it seemed that Jiang Yuan could do it.

Jiang Yuan looked at the map again, coughed twice, and hesitated a little.

This work is comparable to investigation, but the difference is that investigation is a careful search by a group of people, for fear of wasting all their efforts because of missing a point. As for using forensic botany to find corpses, he would have to search carefully and cautiously by himself. Not to mention boring, the work efficiency would not be very high.

The most important thing is that this approach is very difficult and there are few precedents. In the end, if he cannot do his best, it will be difficult for Jiang Yuan himself to accept it.

"Jiang Yuan, give it a try." Liu Jinghui saw this and said, "If you don't do it, you can only find Xu Chu."

"Hey, hey, hey... Why did I say something wrong..." Huang Qiangmin was silent at first, but now he couldn't sit still and said hurriedly: "This is our own money in Ningtai County, don't It’s ruined.”

According to the lines drawn by Liu Jinghui, conducting a search and investigation is similar to the investigation of more than 100 kilometers of national highways in Luyang City, but it may be a little more difficult. The advantage is that within the county, supplies are more convenient, but there will definitely be more trouble.

But no matter how simple it is, Ningtai County cannot afford even 10% of Luyang City’s expenses.

Even though Jiang Yuan sold it so many times, all he got back were supplies, and the Ningtai County Bureau's cash was still tight. If it comes to a time when money really has to be spent, there's nothing you can do about it, but for now, it's obviously not that urgent...

Huang Qiangmin held Jiang Yuan in one hand and Liu Jinghui in the other and said, "Let's discuss it carefully and don't waste money easily. We are from Ningtai, a poor county. It's not easy to save a little money. Jiang Yuan, just use that Botany, can you do that?”

"Even if we fly a drone, it would be too time-consuming to see everything one by one. If I were alone..." After Jiang Yuan said this, he looked at Pang Jidong and asked, "Have you tried to find a botanist?" Bar?"

"Yes." Pang Jidong nodded quickly and proactively said, "Would you like to invite me over and give it a try?"

"It would be best to invite him over." Jiang Yuan said quickly. If you have someone to help you, the situation will be different.

"Okay. I'll call. How many please?" Pang Jidong took out his cell phone.

"A few...then the more the better. Can we invite a lot?"

"I have found four or five people now. They are all researchers from the Institute of Botany, or professors from schools, the kind who have a team. Let's see how many can come."

Jiang Yuan was surprised: "I see that for foreign police, it is quite difficult to hire experts and so on, and the expenses are quite high."

Pang Jidong smiled while sending WeChat and text messages: "How can foreign police compare with our domestic police? We are the people's police. Moreover, no matter how harshly everyone scolds the experts, these powerful botanists are still very good." For those who have ideals, I tell them that they can apply what they have learned, and they don’t even care about money, and they pay for their own round-trip air tickets.”

Jiang Yuan really had never been exposed to this part, so he could only nod obediently.

The special team became busy at this point.

Following the lines drawn by Liu Jinghui, the police team launched multiple drones to take low-altitude photography. This part of the technology is already very mature. The demolition office that ordinary families often encounter will fly drones to take pictures of all the conditions on the ground to prevent people from building randomly after the demolition announcement is issued. Plant trees and reclaim wasteland.

At the same time, Huang Qiangmin transferred the entire police dog squadron and tried to use it on the scene.

The experts invited by Pang Jidong arrived as early as noon, which can be said to be a race against time.

In the afternoon, several botanists arrived at the conference room of the Ningtai County Bureau one after another. The conference room of the Zoumadao Police Station was too simple. Huang Qiangmin felt that outsiders could not misunderstand the working conditions of the people's police.

Jiang Yuan sat in the conference room very early, looking at the screen and taking notes. He greeted the botanist when he came in, and did not socialize too much.

There are a total of 5 routes drawn by Liu Jinghui. The area to be seen is very large, and everyone will have a full workload.

The last botanist to arrive at the Ningtai County Bureau was Su Lei, a female researcher wearing a professional suit and stockings. She was tall and had long and thin legs.

As a result, the number of people in the conference room increased by several, and the botanist who came earlier also introduced the situation politely, saying: "Now is the preliminary screening stage. Everyone claims an area or line, and then interprets it on the computer. There are Report the results as soon as they are found, but it is recommended to record them in a book and submit them together later. The corpse will not escape."

"Okay." Su Lei responded and then asked, "How are you doing with your search?"

"I found an isolated grave. It was buried three or four years ago. The time doesn't match up. It should have been buried secretly by locals. The police have been sent to look for him." Jiang Yuan answered.

Su Lei was amused: "Is it so interesting to work with the police?"

"I am a police officer." Jiang Yuan pointed to his epaulette and introduced himself: "I am a forensic doctor from the Ningtai County Bureau."

"I know, Officer Pang said you know forensic botany. In fact, I'm quite skeptical. Does anyone really know forensic botany?" Su Lei is a true industry insider, and the questions she raised are actually very industry-specific. : "I think forensic botany is a bit of a false proposition. Botany involves too much information. Is it too difficult to be a part-time forensic scientist and botanist?"

In fact, it does.

If Jiang Yuan didn't have the help of the system, he would definitely not be tempted to challenge forensic botany.

This kind of technology is knowledge that really requires systematic education to master. If you master it before graduation, you will master it. If you cannot master it before graduation, there will be no hope after graduation.

Jiang Yuan could not explain his situation, so he could only spread his hands and said: "Forensic botany is indeed difficult, and we now tend to look for mature botanists. I am special."

"It's really special." Su Lei said as she approached Jiang Yuan.

Before she started working, she walked over to look at Jiang Yuan's work screen and took a look at Jiang Yuan's notebook.

At a glance, Jiang Yuan saw that Jiang Yuan had memorized the names of a lot of weeds, such as crabgrass, cowgrass, purslane, zebra...

Su Lei understood instantly and said, "Soil disturbance?"

"Yes." Jiang Yuan nodded.

Disturbance of the soil will transmit various environmental influences to plant seeds in the soil and induce growth. The principle of this thing is also related to the "seed bank". A seed bank means that the soil contains the seeds of all nearby plants, but when conditions are not suitable, the seeds are just like in the bank, just stored in case of emergency.

When the soil is disturbed, the seeds in the disturbed soil will think that the time has come, and then rush to grow.

This is also the principle behind the changes in vegetation in burial sites.

Initially, the burial ground will become barren, and then a large number of plants will rush to grow.

Because weeds are the most abundant in the seed bank, and those with lower growth requirements are also weeds. Therefore, after the burial ground becomes deserted, the second indicator that appears is weeds.

But in the end, it all comes down to competition, and the more competitive plants will eventually cover the burial ground.

It must be noted that the plants near the burial site do not grow very lushly.

The changing patterns vary from place to place and time, requiring botanists to observe and accumulate information.

This is what Jiang Yuan is doing.

Su Lei only looked at Jiang Yuan's notebook and understood his working mode, and then her expression became serious.

"I choose this one. Line C." Su Lei returned to her seat, selected the line, and began to work hard.