Effects of Water Level via Controlling Water Chemistry on Revegetation Patterns After Peat Mining
Effects of Water Level via Controlling Water Chemistry on Revegetation Patterns After Peat Mining
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DOI：
10.1007/s13157-013-0490-1
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发表时间：
2013-10
期刊：
影响因子：
2
通讯作者：
Aiko Nishimura;S. Tsuyuzaki
中科院分区：
文献类型：
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作者：
Aiko Nishimura;S. Tsuyuzaki
泥炭开采后植物群落的恢复与各种环境因素，特别是水位和化学因素有关。在1970年至2003年期间开采的日本北部Sarobetsu泥炭地，利用开采后不同年代设置的永久地块，从2002年到2007年每年监测泥炭开采后的变化。当水位较低时，恢复较慢，而在开采前泥炭地中占优势的乳突泥炭藻，在水位较高的开采后场地中生长良好，其价值相当于开采后场地。开采后泥炭地的水化学成分随水位的影响而变化，而开采前泥炭地的水化学相对稳定。因此，随着规模的扩大，与开采后和开采前的泥炭地合并，水化学成为水位操纵的第一个决定因素。总而言之，高水位会减少地下水中的营养物质，这是在开采后的泥炭地促进泥炭沼泽恢复的先决条件。低pH值与维管植物对营养物质的吸收和地下水的稀释有关，有利于藻体的建立。维管植物的重建可以促进水化学的稳定，并有利于向原始泥炭沼泽地恢复植被。
The recovery of plant communities is related to various environmental factors, in particular, waterlevel and chemistry, after peat mining. The changes over time after peat-mining were annually monitored from 2002 to 2007 in Sarobetsu peatland mined during 1970 and 2003, northern Japan, by using permanent plots setting up in various ages after mining.Rhynchospora albawas the earliest colonizer in the post-mined peatland, and three grasses followed. The recovery was slow when waterlevel was low, whileSphagnum papillosum, being predominant in pre-mined peatland, established well in post-mined sites with high waterlevel of which values were equivalent to post-mined site. Water chemistry was variable according to the effect of waterlevel in the post-mined peatland, while they were relatively stable in pre-mined peatland. Therefore, with large scale, merged with post-and pre-mined peatlands, water chemistry became the first determinants manipulated by waterlevel. In conclusion, high waterlevel that decreases nutrients in groundwater is a prerequisite to promoteSphagnumrecovery in a post-mined peatland. Also, low pH was related to nutrient uptake by vascular plants and dilution by groundwater, and was advantageous forSphagnumestablishment. Re-establishment of vascular plants may promote the stabilization of water chemistries and facilitate revegetation towards the originalSphagnumpeatland.