Three problem about nature poem

The nature poems has long history in Chiese literary history.The integrate nature poem appeared in Caocao’s poems,and was prosperous in Xie lingyun and Xie tao’s poems.So it is not acute to say that philosophic poems is the source of nature poems.In fact,they affected each other.The reason of Xie lingyun’s nature poems appeared has relation to his disappointed in political power,but the most important reason is his idea of Buddhism.