The Ecological Restoration Research On Momoge Scripus Planiculmis Wetland

Scripus planiculmis is one of important plants in Momoge wetland, and its tuber is an important food for Siberian crane, which is one of world’s endangered waterfowl. Scripus planiculmis communities can directly affect the quality of the habitat of Siberian crane. In recent years, affected by several factors, the water depth and salinity of this area have changed dramatically, which have greatly influenced the distribution of Scripus planiculmis and the number and size of its tubers. This papers analyzes the variation rule of their productive characteristics of Scripus planiculmis with time, explores the effects of different water depth and salinity on the growth of Scripus planiculmis, and sums up the methods of collecting and storing Scripus planiculmis’ s tubers. Based on above, the attempt on artificial propagation of the tubers of Scripus planiculmis have been carried out. The correspond recovery measures for the current environment problems of Momoge wetland have been proposed, which would guarantee Siberian crane to obtain sufficient food sources and good habitats. The main conclusions include:1. The Scripus planiculmis ’rapid growth, reproduction period, plant height, biomass, population destiny, and population coverage increased with the growth time and then decreased.2. 0-30 cm depth range, the plant height of Scripus planiculmis increased with the increase of the water depth; 10-20 cm depth range of Scripus planiculmis biomass is the largest; the biomass in deep water area(20-30 cm) are much smaller than the biomass in shallow water area(0-20 cm); population density and grass coverage almost have the same trend, both having a descending trend with the increase of the depth of water, and then maximum density of population and coverage in the range of 0-10 cm water depth. When the range is from1.0 to 2.0g/L, Scripus planiculmis plant height reach the maximum; biomass in different salinity range showed a trend of increasing firstly and then decreasing; population density and coverage have the same change trend, both having a significant reduction in trend with the increase of salinity.3. In Etoupao wetland, the tubers of Scripus planiculmis are mainly distributed in the range 0-30 cm depth; water depth have significant influence on the features of the tuber of Scripus planiculmis, in different water depths(0-10 cm, 10-20 cm, 20-30cm), characteristics of the tuber of Scripus planiculmis are different, and it has the largest biomass in the depth of 10-20 cm,while the minimum in the depth 20-30cm; the density,the individual proportion and the size(diameter > 5 mm) have the same change trend with the water depth, both having a deduction trend with water depth increase and reaching the maximum in the depth 0-10 cm.4. By sampling and field plot experiment, it explores the space and time rule of the Scripus planiculmis’ distribution in soil; in September, the tubers have the largest numbers in the soil and the single tuber also has its largest quality; tubers are mainly distributed in 0-15 cm soil layer range, where, 0-15 cm soil layer range have the largest numbers of tubers.5. Sum up the Scripus planiculmis’ collection and storage methods: the best time to collect the tubers is in the early May, selecting the Scripus planiculmis’ community in a water depth of 0-10 cm, controlling the temperature of storage environment(0-10℃) and humidity( 80%-90%), which would solve the problem of difficult collection of other tubers during the Scripus planiculmis’ recovery.6. When using the artificial propagation to recover Scripus planiculmis wetland, it is recommended to choose wintering tubers as breeding material, and during the germination period, regulating the water depth of 0-10cm; depth of 5-10 cm; density of 40/ m2, so as to achieve the most excellent recovery effect.