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Evaluation of tourism climate comfort in the Grand Shangri-La region 被引量:8
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作者 cheng qing-ping ZHONG Fang-lei 《Journal of Mountain Science》 SCIE CSCD 2019年第6期1452-1469,共18页
The Grand Shangri-La(GSL) region has strong international tourist appeal. GSL has considerable international eco-tourist potential as well as being attractive for leisure, vacation, health, explorative, and scientific... The Grand Shangri-La(GSL) region has strong international tourist appeal. GSL has considerable international eco-tourist potential as well as being attractive for leisure, vacation, health, explorative, and scientific research activities in addition to high-end tourism experiences. These factors could promote the development of its regional tourism. GSL has been identified as a key area for tourism development in China. In this study, we investigated tourism climate conditions in GSL from 1980 to 2016 using a tourism climate index(TCI). We found that through global warming, the number of annual and monthly good-weather days, as assessed with the TCI, showed an increase over most of GSL;that trend was especially true for very good, excellent, and ideal days. The optimal travel period was May–October. We obtained the same result using cluster heat maps, in which we categorized 31 studied meteorological stations into eight types. However, heavy rainfall tended to occur during that optimal period, and it was concentrated at certain times. The annual total number of comfortable days greater than 300 was mainly located in southern GSL. We observed significant correlations between monthly and annual excellent and ideal days with latitude and elevation;in particular, we identified a significant nonlinear correlation between excellent(and ideal) days and elevation. 展开更多
关键词 GRAND Shangri-La REGION EVALUATION TOURISM climate COMFORT Cluster heat MAPS Temperature Precipitation
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科尔沁沙地退化植被恢复过程中碳氮化学计量特征的变化 被引量:7
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作者 吕朋 左小安 +4 位作者 孙珊珊 张晶 赵生龙 程清平 胡亚 《干旱区地理》 CSCD 北大核心 2019年第3期606-614,共9页
为研究沙地退化植被恢复过程中碳氮化学计量特征的变化,分别于2011年、2013年和2015年8月中旬对流动、半固定、固定沙丘和草地进行植被调查,并测定植被-土壤系统的碳氮化学计量特征。结果表明:(1)随着沙地退化植被的恢复,地上植物、凋... 为研究沙地退化植被恢复过程中碳氮化学计量特征的变化,分别于2011年、2013年和2015年8月中旬对流动、半固定、固定沙丘和草地进行植被调查,并测定植被-土壤系统的碳氮化学计量特征。结果表明:(1)随着沙地退化植被的恢复,地上植物、凋落物和根系的C、N含量及C/N比波动变化,土壤(0~10 cm)C和N含量及C/N比显著增加(P<0.05)。(2)沙地4种生境上的地上植物、凋落物、根系、土壤的C、N含量及C/N比年际间变化显著(P<0.05)。(3)沙地退化植被恢复过程中地上植物、凋落物、土壤的C/N比与物种丰富度呈正线性关系(P<0.01)。沙地退化植被恢复过程中优势植物演替导致植被-土壤系统中C、N化学计量特征的变化,植被恢复过程中植物的氮素利用效率也在逐渐增强,而封育时间的增加能够促进沙地土壤中N的积累。 展开更多
关键词 C、N含量 C/N比 退化植被恢复 恢复年限 科尔沁沙地
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