使用增强的岩石风化在非洲萨赫勒地区-地球科学堆栈交换江南电子竞技平台江南体育网页版

使用增强非洲萨赫勒地区的岩石风化

2020 - 07 - 09 - t14:02:41z

最近 < A href = " https://www.theguardian.com/environment/2020/jul/08/spreading-rock-dust-on-fields-could-remove-vast-amounts-of-co2-from-air?CMP=Share_iOSApp_Other" rel="nofollow noreferrer">Guardian article "Spreading rock dust on fields could remove vast amounts of CO₂ from air" has gotten some attention in the nongovernmental and UN organizations working in the Sahel who are desperate to combat the adverse effects of climate change in the region. This article is based on a Nature publication on enhanced rock weathering (ERW).

Let's pretend a large international organization has tasked a newly employed software developer to look into the feasibility of performing ERW in the Sahel. Now this let's say this software developer, who has no geological background whatsoever, is trying to figure out what it would take to run a ERW pilot in the Sahel and decided to investigate Bol, Chad to have a specific place to focus on.

Ideally, this pilot would seek to test two things (i) is ERW feasible to perform in the region of conflict, (ii) does the crushed basalt or silicate, which is added to the soil, increase crop yield?

In order to determine if this pilot is feasible to even consider I think the following should be investigated:

Current farming methods in the region
Feasibility of acquiring and transporting crushed basalt or silicate
Method for applying the basalt or silicate to the soil

What else should I look at?

If you were given this (completely hypothetical) task where would you start?

Is there any giant red flag I am missing which would be enough of a reason not to move forward with a pilot?

答案将使用增强的岩石风化的非洲萨赫勒地区

2020 - 07 - 10 - t10:39:53z

好了我做了一个< a href = " https://drive.google.com/file/d/1fkL-H4DzDITdvy6yygTZqsz8ROee1f10/view?usp =分享”rel = " nofollow noreferrer " > < / >上减轻气候变化对农业用地被增强的风化的岩石为我的硕士(2014年)并不是聪明,但它确实包含了一些有用的参考,如果你想进一步研究这个。 我想在萨赫勒地区的主要限制因素是,这一过程需要湿。所以你可能只讨论能够添加材料灌区。也有限制你已经讨论过的材料。作物产量而言,我认为这只会增加植物生长的地区还没有碱性地质(我不知道在萨赫勒地区地质的样子,恐怕)和添加太多的土壤可能实际上减少 网站生育不添加别的东西(肥料是传统的修正案) 据我所知,增强风化技术是完全可行的,但它有一个有限的应用程序,因为我们需要的数量。 希望这有助于。

答案由bandybabboon使用增强非洲萨赫勒地区的岩石风化

2020 - 07 - 15 - t19:34:49z

注意,萨赫勒地区是一个注定要失败的降雨/ CO2吸收的方程。土壤热往往采集矿物及其有机质含量减少,所以萨赫勒地区可能会太热。对化肥、岩石粉尘是具有经济意义。 程序应该量化: 可用预算项目。 公斤质量的岩石: 采石场成本。运输成本。卡车+燃料成本。压碎机成本。能源成本。劳工组织传播。培训计划指导灰尘传播。 Dissemination machines. Rain window period. Maximium rock load for a given precipitation rate, i.e. 10g/m2 per 1cm of rain.

Using planes to lift 100 tonnes of dust per day may be cheaper than using trucks (a 747 can lift 112 metric tonnes).

答案由大卫Beerling使用增强非洲萨赫勒地区的岩石风化

2020 - 07 - 21 - t08:26:37z

更多信息一并: < a href = " https://www.nature.com/articles/s41477 - 018 - 0108 - y.epdf?author_access_token = w1xYBFb3g3BwKnjkBD1cJtRgN0jAjWel9jnR3ZoTv0NSaZpth7Zz94N6_lHXNgths4xErTsML30mZS8Ql0FCuzY9k6ePi5nMsoEvmCXoU5g65l-c0C09tp3iWQMGMdfvbuwlRhm5_snv9tqy8Kc6ig % 3 d % 3 d nofollow noreferrer“rel = > https://www.nature.com/articles/s41477 - 018 - 0108 - y.epdf?author_access_token = w1xYBFb3g3BwKnjkBD1cJtRgN0jAjWel9jnR3ZoTv0NSaZpth7Zz94N6_lHXNgths4xErTsML30mZS8Ql0FCuzY9k6ePi5nMsoEvmCXoU5g65l-c0C09tp3iWQMGMdfvbuwlRhm5_snv9tqy8Kc6ig % 3 d % 3 d < / > < a href = " https://www.nature.com/articles/s41477 - 018 - 0108 - y.epdf?author_access_token = w1xYBFb3g3BwKnjkBD1cJtRgN0jAjWel9jnR3ZoTv0NSaZpth7Zz94N6_lHXNgths4xErTsML30mZS8Ql0FCuzY9k6ePi5nMsoEvmCXoU5g65l-c0C09tp3iWQMGMdfvbuwlRhm5_snv9tqy8Kc6ig % 3 d % 3 d nofollow noreferrer“rel = >农业作物和岩石应对全球气候,食物和土壤安全< / > 热气候有利于一并——风化的动力学是依赖于温度的。但如上所述,你也需要水。