不同林分类型林下植被及土壤层水源涵养功能比较研究

摘要

水源涵养能力是森林生态系统重要功能之一。该文分析了杉木纯林、马尾松纯林及杉木马尾松混交林林下植被层、凋落物层和土壤层水源涵养能力的差异。研究结果表明，林下植被层最大持水量表现为杉木马尾松混交林＞马尾松纯林＞杉木纯林，凋落物层最大持水量、0～60cm土层总蓄水量以及林分总持水量均表现为杉木马尾松混交林＞杉木纯林＞马尾松纯林。杉木马尾松混交林水源涵养功能整体上优于杉木纯林和马尾松纯林两种林分类型。%　　Water conservation capacity is one of the important functions of forest ecosystem. Water conservation ca⁃pacity of undergrowth layer,litter layer and soil layer of different types of Chinese fir pure forest,Pinus massoni⁃ana pure forest and Chinese fir and Pinus massoniana mixed forest were studied in this paper. The results showed that: The biomass layer and the maximum water holding capacity of undergrowth were showed Chinese fir pure forest>Chinese fir and Pinus massoniana mixed forest>P. massoniana pure forest,and the difference reached significant level;The maximum water-holding capacity of the litter layer were showed Chinese fir and P. massoniana mixed forest>P. massoniana pure forest>Chinese fir pure forest;The total storage capacity of 0~60 cm soil were showed that Chinese fir pure forest>Chinese fir and P. massoniana mixed forest>P. massoniana pure forest. The total water holding capacity of different kind of forests were showed that Chinese fir pure forest>Chinese fir and P. massoniana mixed forest>P. massoniana pure forest.