Analysis on Economic and Ecological Benefit of Black-soil-beach Sown Grassland
Economic and ecological benefits of nine years sown grassland in black-soil-beach were assessed for providing useful databases of better management and decision-making on the sown grasslands. Results show: total yield of 9-year old sown grassland under management was 40993.00 kg ． hm-2, while that was, 21685.0 kg ·hm-2 under natural succession. Economic benefit of sown grassland under management was 5406.42 RMB ·hm-2 higher than that under nature succession. Ecological service and property value were 15685.5＄ ·hm-2．a-1and 31224.5＄· hm-2 ．a-1 for mix-sown grassland, 13087.5＄ · hm-2 · a-1 and 26036.8 $ · hm-2 · a-1 for singly-sown grassland, 125. 5 $ · hm-2 · a-1 and 340 $ · hm-2 ·a-1 for black-soil-beach degraded grassland respectively. Ecological service and property value of black-soil-beach degraded grassland ecosystem were 1/5and 1/3 of non-degraded natural grassland respectively, 1/104 and 1/76 of singly-sown grassland respectively, 1/125 and 1/92 of mix-sown grassland respectively. Therefore, we suggest that value calculation should be considered during decision-making of compensatory conservation and recovery of grassland ecosystem.
NETL
NSTL
万方数据
维普
