Selection Of Greening Plant In Littoral Salina Of Hangzhou Gulf

Salt stress is one of the most serious non-biostress factors in the nature. Salt stress has significantly effect on physiological and biochemical factors, such as phenotype, proline, photosynthetic rate, phytohormone and so on. There are different effects of salt stress on different species and also there are different sensitivities of salt on different development stages of the same species. To investigate and select the species which are planted in littoral salina of Hangzhou gulf, we combine field investigation with field test and lab physiological experiments. The results are summarized as follows:1. 6 species including Raphiolepis umbellata belong to high saline tolerant plants, 4 species including Ilex integra belong to low (<0.3%)saline tolerant palnts and 7 species including Eurya emarginata belong to medium (0.6%) saline tolerant palnts according to the phenotypes. In addition, 10 species including Fraxinus griffithii can tolerate 0.3%NaCl. 2. Different saline tolerant species also can be selected according to the physiological and biochemical traits. Raphiolepis umbellate,Eurya emarginata and Crossostephium chinense possess high saline tolerant characteristics under 0.6%-0.9% salt concentrations. Podocarpus macrophyllus and Morus alba can resist 0.6% salt concentration. However, Rosa chinensis can just resist 0.3% salt concentration. 3. Saline tolerant species selected according to the investigation and lab experiment results growth well in the field test.The conservation rate of arbor and shrub reached 94.8% and covering rate reached 56.4%.