... arable land protection regime 耕地保护 Arable Land Use Change 耕地变化 Arable Land Dropped 耕地锐减 ...
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arable land use change
耕地利用变化
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Xinjiang; arable land use change; spatial differentiation; population.
新疆；耕地变化；地域分异；人口。
youdao
It means the 1939 kick seen in the nitrate "curve" above also incorporates some the delayed response from the land-use change brought about by the introduction of arable subsidies in 1917.
BBC: Thames archive reveals long nitrate rise
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