杉木酸枣人工混交林生产力和林木生长规律的研究

Studies on the Productivity and Tree Growth Law of the Artificial Mixed Forest of Cunninghamia lanceolata and Choerospondias axillaris

本文分析比较了２０年生杉木与酸枣人工混交林以及杉木纯林、酸枣纯林生产力和林木生长规律。结果表明：杉木与酸枣人工混交林乔木层生物量为１６８．７４ｔ／ｈｍ２＞杉木纯林乔木层生物量１３５．９５ｔ／ｈｍ２＞酸枣纯林乔木层生物量１０７．０１ｔ／ｈｍ２；杉木与酸枣混交林林分蓄积量为３５５．１１３ｍ３／ｈｍ２＞杉木纯林蓄积量３０１．６７２ｍ３／ｈｍ２＞酸枣纯林蓄积量１７３．１５０ｍ３／ｈｍ２；杉木与酸枣混交可改变树种单调状况，防止地力衰退，提高林地生产力。

This paper analyzed and compared the productivity and tree growth law of 20yearold artificial mixed forest of Cunninghamia lanceolata and Choerospondias axillaris,pure forest of Clanceolata and pure forest of Caxillaris ,The results indicate that the arbor layer biomass of the artificial mixed forest of C.lanceolata and C.axillaris,the pure forest of C.lanceolata and the pure forest of C.axillaris is 168.74t/hm2,135.95t/hm2 and 10701t/hm2 respectively;the stand stocking of the above forests is 355.113m3/hm2,301.672m3/hm2 and 173.150m3/hm2 respectively;and the mixture of C.lanceolata and C.axillaris may change the monotonous tree species situation,prevent the soil fertility reduction and increase the forest land productivity.