| 1 | It is Yanchi County Haba Lake tourist area. | |
| 2 | The continuous implementation of policy of reversion of arable land to forest and rangeland will be the key factor related to the desertification combating in Yanchi. | |
| 3 | The seed density dynamic changes of soil seed bank in different pasturage growth phase on the desert steppe of Yanchi, county Ningxia were studied. | |
| 4 | The results of correlation analysis show that the correlation coefficient between the vegetation fraction and rainfall, evaporation are very high in Yanchi. | |
| 5 | On the summary of ecological vegetation construction projects and existing vegetation distributed patterns in Yanchi county in recent years, serial researches was carried out in this paper. |
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