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２０００ａ间，中国境内野生稻分布区域由２４９５５７５ｋｍ２缩减至１３７１０９４ｋｍ２，减少了４５．０６％；分布纬度北界由３８°３′Ｎ南移至２８°１４′Ｎ，南移９°４９′、１１４０ｋｍ；中国境内栽培稻分布区域由４０８１８６０ｋｍ２增加至９６０００００ｋｍ２，增加了１３５．００％；分布北界由３８°Ｎ北移至５３°２９′Ｎ，北移１５°２９′、１７００ｋｍ。人口分布重心主要在黄河流域和长江流域，对该区域野生稻的生存产生不利影响。而促进栽培稻的发展，必须建立野生稻自然保护区。
In 2000a, the distribution range of wild rice in China decreased from 2495575km2 to 1371094km2, a decrease of 45.06%. The north latitude of distribution latitude moved from 38 ° 3’N to 28 ° 14’N and moved 9 ° 49’and 1140km to the south. The distribution of cultivated rice in China increased from 4081860km2 to 9600000km2, an increase of 135.00%. The northern boundary of the distribution shifted from 38 ° N to 53 ° 29’N and 15 ° 29 ’north and 1700km north. The center of population distribution is mainly in the Yellow River Basin and the Yangtze River Basin, adversely affecting the survival of wild rice in the region. To promote the development of cultivated rice, it is necessary to establish the nature reserve of wild rice.