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估量了泰国不同形式用地类型的碳存储,并且评价了用地类型对碳储量的作用。通过野外采集的数据评估了原始林、再造林和农业用地的地上部分、土壤有机质和健康根系的碳储量。结果表明,森林碳储量(357.62±28.51Mg·ha-1)显著高于再造林(195.25±14.38Mg·ha-1)和农业用地(103.10±18.24Mg·ha-1)。森林土壤有机碳(196.24±22.81Mg·ha-1)也显著高于再造林(146.83±7.22Mg·ha-1)和农田(95.09±14.18Mg·ha-1)。各种用地中碳储量的差异主要是植被生物量和土壤有机质变更的结果。各种用地中的健康根系存储碳仅占碳储量的一小部分。土壤有机碳和根系碳量主要分布在0-40cm的土层间,并且随着土层的增加而降低。森林、再造林和农田中地上部分碳:土壤有机碳:根系碳比率分别是5:8:1,2:8:1和3:50:1。暗示大部分碳量损失是由林业用地转变为农业用地造成的。然而,再造林又可以通过有效回收碳,因为再造林中碳存储水平较高,有利于二氧化碳损失。图1表5参52。
The carbon storage for different forms of land in Thailand was estimated and the effect of land use type on carbon stocks was evaluated. Data collected from the field assessed the carbon stocks of aboveground parts of forest, reforestation and agricultural land, soil organic matter and healthy roots. The results showed that the forest carbon storage (357.62 ± 28.51 Mg · ha-1) was significantly higher than that of reforestation (195.25 ± 14.38 Mg · ha-1) and agricultural land (103.10 ± 18.24 Mg · ha-1). Soil organic carbon (196.24 ± 22.81Mg · ha-1) was also significantly higher than that of reforestation (146.83 ± 7.22Mg · ha-1) and farmland (95.09 ± 14.18Mg · ha-1). The differences of carbon stocks in various land uses are mainly the result of changes in vegetation biomass and soil organic matter. Healthy root storage of carbon in all kinds of land accounts for only a fraction of the carbon stock. Soil organic carbon and root carbon amount were mainly distributed in 0-40cm soil layer, and decreased with the increase of soil layer. Above-ground carbon in forest, reforestation and farmland: Soil organic carbon: root carbon ratios were 5: 8: 1, 2: 8: 1 and 3: 50: 1, respectively. Suggesting that most of the carbon loss is caused by the conversion of forestry land to agricultural land. However, reforestation, in turn, can be achieved through the efficient recovery of carbon because of the high level of carbon storage in reforestation that contributes to the loss of carbon dioxide. Figure 1 Table 5 reference 52.