Abstract: To establish a scientific nature reserve system is a hot topic in the research field of nature reserve protection under the issues of more and more serious wildlife habitat loss and habitat fragmentation. This paper summarized the research progress in the construction of nature reserve system, and introduced the related construction methods, including conservation gap analysis, conservation prioritization analysis, and ecoregion conservation planning analysis, as well as the methods of habitat corridor design. The advantages and disadvantages and the suitable application conditions of these methods were analyzed, and the future research directions were put forward to provide some references for the study and practice in the construction of nature reserve system and to promote the development of nature reserve.

Key words: yield, drought degree, yield component, yield loss., continuous drought