Li Sheng, Ren Hua-Dong, Yao Xiao-Hua, Zhang Shou-Gong
Research Institute of Subtropical Forestry, Chinese Academy of Forestry Sciences, Fuyang 311400, Zhejiang, China.
Ying Yong Sheng Tai Xue Bao. 2009 Feb;20(2):387-95.
In June 2007, the diurnal dynamics of light intensity, air temperature, air relative humidity, soil temperature, and surface soil (0-5 cm) water content of five land use types in the typical Karst zone of Lingyun City in Guangxi Zhuang Autonomous Region were observed. The results showed that different land use types altered the composition, coverage, and height of aboveground vegetation, which in turn changed the environment microclimate to different degree. The microclimate quality was in the order of forestland > shrub land > grassland > farmland > rock land. On rock land, the light intensity, air temperature, air relative humidity, soil temperature, and soil water content were higher, and the diurnal variation of the five climatic factors was notable, with the microclimatic conditions changed towards drier and hotter. Compared with those on rock land, the light intensity on forestland, shrub land, grassland, and farmland decreased by 96.4%, 52.0%, 17.0% and 44.2%, air temperature decreased by 30.1%, 20.2%, 12.7% and 17.8%, air relative humidity increased by 129.2%, 57.2%, 18.0% and 41.2%, soil temperature decreased by 11.5%, 8%, 2.5% and 5.5%, and soil water content increased by 42.6%, 33.2%, 15.7% and 14.0%, respectively. The five climatic factors on forestland and shrub land had lesser fluctuation, with the microclimate tended to cool and wet. Light intensity, air temperature, and soil temperature correlated positively with each other, and had negative correlations with air relative humidity and soil water content. A positive correlation was observed between air temperature and soil water content.
2007年6月，对广西壮族自治区凌云市典型喀斯特地区5种土地利用类型的光照强度、气温、空气相对湿度、土壤温度和表层土壤（0 - 5厘米）含水量的日动态进行了观测。结果表明，不同土地利用类型改变了地上植被的组成、覆盖度和高度，进而不同程度地改变了环境小气候。小气候质量顺序为林地＞灌丛地＞草地＞农田＞裸岩地。在裸岩地上，光照强度、气温、空气相对湿度、土壤温度和土壤含水量较高，5个气候因子的日变化显著，小气候条件向更干燥、更炎热转变。与裸岩地相比，林地、灌丛地、草地和农田的光照强度分别降低了96.4%、52.0%、17.0%和44.2%，气温分别降低了30.1%、20.2%、12.7%和17.8%，空气相对湿度分别增加了129.2%、57.2%、18.0%和41.2%，土壤温度分别降低了11.5%、8%、2.5%和5.5%，土壤含水量分别增加了42.6%、33.2%、15.7%和14.0%。林地和灌丛地的5个气候因子波动较小，小气候趋于凉爽湿润。光照强度、气温和土壤温度之间呈正相关，与空气相对湿度和土壤含水量呈负相关。气温与土壤含水量之间呈正相关。
