CAJ | 학술논문

通过测定西双版纳两个热带雨林类型中226个植物种叶片的δ13C值，以其为植物水分利用效率的指示物，研究了本地区热带雨林植物叶片δ13C值的特点及水分利用状况，比较了不同样线植物叶片δ13C平均值以及不同生活型植物叶片δ13C平均值的差异。研究发现：1.西双版纳地区热带雨林植物叶片δ13C值的范围在-3.865%～-2.760%之间，与其他典型热带地区的研究结果相近，表明该地区具有世界其他典型热带雨林的特征；2.补蚌样地所有植物叶片δ13C平均值低于城子样地，植物叶片δ13C平均值在同一样地不同样线之间也存在显著差异，表明水分状况和样线的方位是样线之间存在差异的主要原因；3.常绿植物叶片的δ13C值显著低于落叶植物，乔木、灌木、草本和藤本植物叶片的δ13C值之间也存在显著差异，水分利用状况因此而不同。
통과측정서쌍판납량개열대우림류형중226개식물충협편적δ13C치，이기위식물수분이용효솔적지시물，연구료본지구열대우림식물협편δ13C치적특점급수분이용상황，비교료불동양선식물협편δ13C평균치이급불동생활형식물협편δ13C평균치적차이。연구발현：1.서쌍판납지구열대우림식물협편δ13C치적범위재-3.865%～-2.760%지간，여기타전형열대지구적연구결과상근，표명해지구구유세계기타전형열대우림적특정；2.보방양지소유식물협편δ13C평균치저우성자양지，식물협편δ13C평균치재동일양지불동양선지간야존재현저차이，표명수분상황화양선적방위시양선지간존재차이적주요원인；3.상록식물협편적δ13C치현저저우락협식물，교목、관목、초본화등본식물협편적δ13C치지간야존재현저차이，수분이용상황인차이불동。
The foliar δ13C values of 226 plant species sampled from 7transects belonging to 2 rainforests (named Chengzi and Bubeng, respectively) in Xishuangbanna of Yunnan Province, China were analyzed. The characteristics of foliar δ13C values and water use efficiency (WUE) of plants indicated by δ13C values in this region were studied. In the mean time, the average foliar δ13C values of plants in different transects and with different growth forms (i.e., tree, shrub, herb and liana) were compared. The results showed that: 1. the foliar δ13C value in Xishuangbanna, ranging from -3.865%--2.760%, was similar to those of other typical rainforests in the world (Amazon and Puerto Rico, for instance), which indicated that the rainforests in this region had the typical characteristics of rainforests of the world; 2. there were significant differences between Chengzi and Bubeng in average foliar δ13C values, with the latter being lower than that of the former; significant differences also existed between different transects in the same forest, which indicated that water conditions and orientation of transects might have resulted in these differences; 3. the average foliar δ13C value of evergreen plants was significantly lower than that of deciduous plants, and there also existed significant differences between different growth forms, implying that the WUE of these plant species was also quite different.