 Hi, I'm making videos low and this is my presentation on Shenzhen China for Earth 107 Okay, so Shenzhen is in a very interesting location because it is a low elevated level And it's right by the Pearl River and the sea down here The coastline is a submergent one and it is a tide dominated one There's a large amount of sediment and this is mostly due to shore erosion, which is the major problem right now Okay, so for the next couple slides. I'm not gonna have my camera on so that we can see in full detail the infographics I have so here is the topographic of Shenzhen and It is from what can be considered like the heart of Shenzhen, which is a very densely populated area to along the shore of the Pearl River and Here we can see not much of this is above 25 meters for elevation So at this point here that highlighted It's only at 9 Which is not great whenever you're surrounded by water and are at very high risk of flooding like Shenzhen Here we have our start of the figures So this is a color-coded map of Shenzhen. It is color-coded by flood hazard zones All these little red dots are hot spots of places that are likely to and have been flooded Here's the key so as we can see Definitely likely to flood But there's still you know some areas that are like fairly low and This is from 2016. This is real data and we have the predicted by 2030 and it is not looking any better In fact, it's looking fairly worse So this can be a little hard with the hot spots, but I think it demonstrates fairly well What Shenzhen is in for? Shenzhen is a metropolitan area. It has over 13 million people close to 14 million. This is gonna be presumed to grow due to the growing tech industry and this industry is bringing in a lot of billionaires and tech moguls into the area and it's creating a rather large disparity in wealth And I think these two photos exemplify that really well With the skyline being rather new and these I'm gonna presume our apartments Not being the same Speaking of apartments. Apartments are the largest form of housing in the area due to the dense population Shenzhen has a very rich history with people inhabiting the area as far back as 7,000 years ago so Much to be had here Okay Revisiting industries Shenzhen's industries that they've had for long before the tech industry is Manufacturing and shipping. It's a global shipping hub. It's very important to not only China but to the global trading So it's a very high risk area of anything were to happen. It would disrupt trade and manufacturing globally Shenzhen is no stranger to flooding It has always happened. It's just gotten way worse over the years I think this picture demonstrates that really well. This entire street here is flooded This is actually from the 2019 flood which really sparked a lot of people and a lot of response and citizens to Start making a change and help mitigate these Floodings and heavy rainfalls and they want to do this by implementing the sponge city Design and it is to address issues of flood risk and crime water scarcity Shenzhen is a very large area Very urban area with a lot of history and unfortunately what that comes a lot of pollution Especially in the water. So they export I believe over 60% of their water from rural areas They don't really have a good reservoir So they wanted to kill two person one stone with this design. So I think this really exemplifies as well The soil composition of Shenzhen is really unique Where that it can hold a lot of water So the idea would be getting heavy rainfall or flooding putting into these water deposits or under the ground in this really saturated area between the urban area the city and the bedrock and Taking this water and putting into aquifers and cleaning it So that it can be used later on so it would both take in all the excess water and then reuse it Shenzhen spudged city concept is really interesting, but it's still in its infancy So it is only in trial and certain parts of the region and that's not been widely rolled out For it to be rolled out. It's going to take time. So in the meantime, they have implemented what I understand to be a very limited roll out of soft engineering solutions such as rocks between land and water planting mangrove trees and butterflies to help mitigate Okay, and now we're going to be reading from our summary portion of the presentation So I'll just go through these bullet points Southern China is a sub tropical climate located on the Eurasian Plate and it's not very close to plate boundaries So it's not a tectonically active area Human intervention has played a huge factor over the past 40 years in reducing the erosion of the shoreline using seawalls as well as other soft engineering methods Shenzhen is implementing the use of a sponge city That will lower flooding and add to their water reservoirs Over the past 30 years restoration of tidal mangroves and tidal mud flats are helping to reduce flooding and co2 And these endeavors that they're doing are called nourishment projects Unfortunately, Shenzhen only recently began setting more of a firm plan after a major flood in 2019 So they're approaching this as the response not only to flooding but as climate change as a whole and according to the chinese government policy is still in its infancy And there needs to be more research done before policy can be implemented. So there is not much out there on what the chinese government plans to do in terms of response board citizens Okay, continuing on their summary slides I'm going to continue to read bullet points and give some more information So a goal of Shenzhen is to make their city a smart city and this is going to be done by implementing new smart water utilities Which is the sponge city concept and it's just referring to all the moving parts that would be involved in making Shenzhen a sponge city So there's over 13 million people as mentioned before And this is a major deal because a 2018 study found that most citizens are unprepared for natural disasters And are lacking proper education in this And this can be contributed majorly to Income inequalities regarding Accessed information access to You know Vehicles to get away from the city to evacuate as well as being afforded the luxury of having time to research and prepare for these matters So the general Advice given to people is to seek elevated areas and I wanted to also Mention again highlight the income inequalities because as shown before in a previous couple of slides The housing They are apartment buildings, but they're rather low and they're not exactly very new So where they're seeking shelter Is definitely a concern Okay, and now on to summary of resiliency recommendations Shenzhen has a large population and a lot of vital industries So there's a few things I'd like to recommend The first would be to make well-known plans for public evacuation and recovery that considers both citizens from affluent backgrounds as well as those from less privileged ones With the recent floods going so awry It's become more or less of a wake-up call for those of shenzhen as well as those around the globe How important it is to prepare so we can ensure everyone's safety and this would be by Making safety plans and evacuations well known to everyone in the general public And I mentioned this as my number one because the chinese government has not implemented a policy that said in stone that takes into account every citizen's wave evacuation So I think that would be the first thing because this is a matter of When and not if another flood This bad happens again Um I like to continue to build shorelines and invest in ways to reduce the effects of sea level rising and flooding So the sponge city concept is a really interesting one and I really hope this goes well But they're putting all their eggs or more or less all their eggs into this sponge city basket And as mentioned before in phase one, they've implemented soft engineering techniques that have been fairly effective so I think instead of phasing that out they continue to Implement both the sponge city concept as well as more soft engineering ideas Um and that'd be about it. Thank you