土壤保護行動 To Protect Our Soil Resources

idea-soil-resources-protection

土壤流失恢復不易 恐威脅未來世代

各國土壤專家在聯合國糧農組織(FAO)7 月25日舉辦的全球土壤研討會議上提出警告,表示因侵蝕、酸化、都市化、養分耗盡和化學汙染等因素,全球已有1/3的土壤因而劣化。為因應此危機,與會各國政府通過全球的行動計劃,透過強力的管制和投資保衛土壤資源。

土壤流失恢復不易 恐威脅未來世代

政府官員和專家齊聚羅馬參與為期3天的「全球土壤合作網」(Global Soil Partnership,GSP)會議,各界利害關係者在會議上均表達亟需政府保護土壤的訴求。

「土壤是糧食、飼料、燃料和纖維生產的基礎。沒有了土壤,地球無法供養生命。而土壤一旦流失,就無法在人類的生命周期之內恢復。」會議主持人,FAO副總幹事Maria Helena Semedo說,「目前的土壤劣化速度和程度已經威脅到未來世代的需求。」

此刻,全球土壤合作網急需資金和政治力量支持。FAO呼籲各國政府立刻採取行動,改善全球有限土壤資源的健康狀態,以確保未來世代能有足夠的糧食、水和能量。

生命倚賴土壤 照顧好還可減緩氣候變遷

全球人口預計將在2050年超越90億,糧食、飼料和纖維需求將成長60%;光是土壤就佔了全球生物多樣性的4分之1,土壤也是供應乾淨水源、抵禦洪水和乾旱不可或缺的角色,所有的動植物都依靠土壤的營養循環維繫生命。

此外,不僅石化燃料燃燒會威脅地球氣候,土壤的非永續管理也會讓氣候承受更大壓力。

非永續的土壤管理可能讓碳釋放到大氣中,加劇全球暖化。FAO指出,「只要歐洲地區的土壤釋放出0.1%的碳,即等同於每年1億輛車的全年排放量。」與會代表在會議上也認識到,地下1公尺深的低活性粘土,是全世界濕潤和半濕潤熱帶地區的主要土壤,有機碳含量是整個亞馬遜地區植披儲存碳量的兩倍。

FAO官員表示,土壤受到保護,氣候也會隨之得利。土壤的永續管理,透過碳匯和減少溫室氣體排放等方式,能對氣候產生正面效應。

2015年為國際土壤年 聯合國盼引關注

因此,FAO官員強調保護和管理富含有機碳的土壤的急迫性,包括泥炭地和永凍土區。

FAO官員也指出,目前已有相關計畫正在進行。一個全球土壤資訊系統正在規劃中,未來將用以測量土壤資源的狀態和改善情況。此外,為了提升永續土壤管理的公共意識,一項特殊的能力發展計畫也在進行中。

全球土壤相關團體已決定發展全球性的土壤永續管理、保育和重建的推廣計畫,以技術和具永續性、包容性的政策為基礎,以地方社群參與的方式來保護土壤。

2013年12月,聯合國大會宣布每年12月5日為世界土壤日。此外,聯合國已指定2015年為國際土壤年,讓土壤議題獲得更多關注。專家也將倡議讓土壤議題進入聯合國永續發展目標。

資料來源: ENS / 台灣環境資訊中心 via Go.Asia 

圖片: 台灣環境資訊中心

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A third of the world’s soils are degraded by erosion, nutrient depletion, acidification, urbanization, and chemical pollution, soil experts at a global conference warned today. There, governments approved a global plan of action to safeguard soil resources through strong regulation and investment.

“Soil is the basis for food, feed, fuel and fibre production. Without soils we cannot sustain life on Earth, and where soil is lost it cannot be renewed on a human timeline,” said Maria Helena Semedo, deputy director-general of the UN Food and Agriculture Organization, FAO, which is hosting the conference.

“The current escalating rate of soil degradation threatens the capacity of future generations to meet their needs,” she warned.

The Food and Agriculture Organization is calling for urgent action to improve the health of the world’s limited soil resources to ensure that future generations have enough food, water and energy.

Government officials and experts are in Rome for a three-day meeting of the Global Soil Partnership, which brings together a broad range of stakeholders stressing the need for governments to preserve soil.

Now what is needed is funding and political support for the plan of action endorsed by the Global Soil Partnership.

The growing global population is expected to exceed nine billion by 2050, resulting in a 60 percent increase in the demand for food, feed and fiber.

Soil represents at least a quarter of global biodiversity, and plays a key role in the supply of clean water and resilience to floods and drought. All plant and animal life depends on primary nutrient recycling through soil processes.

Already stressed by the burning of fossil fuels, Earth’s climate could suffer more stress if soils are not sustainably managed.

Through unsustainable soil management practices, this carbon could be released to the atmosphere, aggravating global warming. “A release of just 0.1 percent of the carbon now contained in Europe’s soils would be equal to the annual emissions from 100 million cars,” the FAO said. Delegates at the conference learned that the first meter’s depth of low activity clay soils, which form the majority of upland soils in the world’s humid and sub-humid tropics, contains an amount of organic carbon double that stored in vegetation across the entire Amazon region.

When soils are protected, the climate also benefits, FAO officials said. The sustainable management of soil will have positive impact on climate change through carbon sequestration and a reduction of greenhouse gas emissions.

In particular, they stressed the need to prioritize safeguarding and management of organic carbon rich soils such as peatlands and permafrost areas.

Progress is in the works, according to FAO officials.

A global soil information system is planned to measure progress made and the status of soil resources. To meet the need for public awareness of sustainable soil management, a special program for capacity development is underway.

The global soil community has decided to establish global programs for the promotion of sustainable soil management, soil conservation and soil restoration. Interventions will be based on technologies and sustainable and inclusive policies that directly involve local communities in actions to protect their soils.

In December 2013, the UN General Assembly declared the 5th of December to be the World Soil Day each year.

Even more attention will be paid to soils next year as the UN has designated 2015 as the International Year of Soils. Experts will advocate for the inclusion of soils in the Sustainable Development Goals.

Source: ENS / Taiwan Environmental Information Center via Go.Asia

Image: Taiwan Environment Information Center

 

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