Earth Watching& Landing

Sustainable agriculture可持续农业

The rice case, in detail. Flooded paddy is the clearest place to see what sustainability means in practice. Continuous flooding creates the airless conditions in which methane-producing microbes thrive; rice is responsible for roughly a tenth of global methane from human activity, and irrigated rice is one of the largest single users of fresh water on Earth.

• Alternate Wetting and Drying (AWD) — let the field dry to a few centimetres below the surface, then re-flood. Field trials and IRRI syntheses report methane cuts commonly in the 30–70% range and water savings around a quarter, with yields held.干湿交替灌溉：让田面落干数厘米再复水。国际水稻研究所等的田间试验显示甲烷普遍下降约30–70%、节水约四分之一，而产量不降。
• Direct-seeded rice (DSR) — skip transplanting into standing water; saves labour, water and puddling energy. Scaling in Punjab and Haryana.旱直播：不再插秧于淹水层，省工、省水、省整地能耗，正在印度旁遮普与哈里亚纳推广。
• Straw management — the difference between incorporating wet straw and removing or composting it can swing a paddy’s methane budget more than the fertiliser choice does.秸秆管理：湿态还田与移出/堆肥之间的差别，对稻田甲烷的影响常常大于化肥选择。
• Vietnam, 2024–2030 — one million hectares of low-emission rice in the Mekong Delta, with results-based finance attached. If it verifies, it becomes the template for all of monsoon Asia.越南 2024–2030：湄公河三角洲100万公顷低排放水稻，并挂钩成效付费融资。一旦核证成功，就是整个季风亚洲的样板。

The trap to name out loud. Sustainable intensification only protects forest if the extra yield actually substitutes for expansion. Where higher yields make frontier farming more profitable, they can pull the frontier outward instead. Yield policy without a land boundary — a moratorium, a protected area, a jurisdictional agreement — is only half a policy.

必须说出口的陷阱：可持续集约化只有在“增产真正替代扩张”时才保护森林。若提高单产反而让边缘地带更有利可图，它会把开荒前沿往外推。没有土地边界（禁伐协议、保护区、属地协议）的单产政策，只是半套政策。

Sustainable fisheries可持续渔业

• Where it works. The Pacific Vessel Day Scheme (PNA) — a hard cap on fishing days traded between island states, with all four main tuna stocks assessed as not overfished. US rebuilding plans under Magnuson-Stevens. Australia, New Zealand, Norway, Iceland. Peru’s anchoveta, where seasons have been closed outright on survey evidence.成效之地：太平洋“捕鱼日方案”（PNA）——以可交易的捕鱼日硬性设限，四大金枪鱼种群均未被评估为过度捕捞；美国《马格努森—史蒂文斯法》重建计划；澳、新、挪、冰；秘鲁鳀鱼曾依据调查证据直接关闭渔季。
• Where it does not. The Mediterranean and Black Sea, where roughly six in ten assessed stocks remain overfished — though that is down from nearly nine in ten a decade earlier, which is real progress. West African waters, where distant-water fleets and illegal, unreported and unregulated fishing outpace monitoring capacity.未奏效之地：地中海与黑海约六成被评估种群仍过度捕捞——但比十年前的近九成已明显改善；西非海域则是远洋船队与非法、未报告、不受管制捕捞超出监测能力。
• The structural shift. Aquaculture overtook capture fisheries for aquatic animal food for the first time in 2022 (about 94 Mt). Sustainability now depends as much on feed — the fishmeal, soy and land behind the fish — as on the net.结构性转折：2022年水产养殖首次在食用水生动物产量上超过捕捞（约9400万吨）。可持续性从此不只在网具，也在饲料——鱼粉、大豆及其背后的土地。
• Two rules that just arrived. The WTO Agreement on Fisheries Subsidies entered into force in September 2025, disciplining subsidies to IUU and overfished-stock fishing. The High Seas (BBNJ) Agreement reached its sixtieth ratification and enters into force in January 2026 — the first framework for protected areas beyond national jurisdiction.两条刚落地的规则：世贸组织《渔业补贴协定》于2025年9月生效，约束对非法捕捞与过度捕捞种群的补贴；《公海生物多样性（BBNJ）协定》获第60份批准，将于2026年1月生效——国家管辖范围以外首个海洋保护区框架。

Sustainable commodities可持续大宗产品

How you actually manage the trade — four levers, in order of proven effect:

• Jurisdictional and sector-wide agreements. The Amazon Soy Moratorium worked because it applied to a whole biome and to every major buyer at once, so there was no leakage market. Certification of individual farms never achieved that.属地与全行业协议：亚马逊大豆禁伐协议之所以有效，是因为它同时覆盖整个生物群区与所有主要买家，没有“漏出市场”。逐个农场的认证从未做到这一点。
• Traceability infrastructure. Geolocation to the plot plus open supply-chain mapping (Trase) turns a diffuse claim into an auditable one.可追溯基础设施：地块级坐标加上公开的供应链映射（Trase），把模糊承诺变成可审计事实。
• Import-market law. The EUDR is the first attempt to make deforestation a customs matter rather than a corporate pledge. Its credibility now rests entirely on enforcement.进口市场立法：EUDR 首次把毁林从企业承诺变成海关事务，其公信力全部押在执法上。
• Price and finance. Cocoa is the warning: Ghana and Côte d’Ivoire supply the large majority of world cocoa, prices spiked past historic records in 2024, and the farmers taking the deforestation decision were the last to see the money. No traceability scheme survives a farmgate price below the cost of living.价格与金融：可可是警钟。加纳与科特迪瓦供应全球大部分可可，2024年价格突破历史高位，而真正决定是否毁林的农户最后才拿到钱。当田头价低于生活成本时，任何追溯体系都撑不住。