In the late Heian period, there were rapidly growing numbers of donated manors, shoen donated to central nobles, temples or shrines by local lords asking for their protection of the shoen from shuko (confiscation) by kokuga (provincial government offices) and so on.
平安時代後期に、在地領主が国衙などによる収公から荘園を守るため、中央の貴族や寺社へ寄進してその保護を求める寄進地系荘園が急速に増加した。