Soil quality assessment of forest stand in different plantation esosystems

Abstract

Abstract: After a clear-cutting of the first generation Cunninghamia lanceolata plantation in 1982,three plantation ecosystems,pure Michelia macclurei stand (PMS),pure Chinese-fir stand (PCS) and their mixed stand,were established in spring 1983,and their effects on soil characteristics were evaluated by measuring some soil physical,chemical,microbiological and biochemical parameters.After 20 years' plantation,all test indices showed differences among different forest management models.Both PMS and MCM had a favorable effect on soil fertility maintenance.Soil quality assessment showed that some soil functions,e.g.,water availability,nutrient availability,root suitability and soil quality index were all in a moderate level under the mixed and pure PMS stands,whereas in a relatively lower level under successive PCS stand.The results also showed that there existed close correlations between soil total organic C (TOC),cation exchange capacity (CEC),microbial biomass-C (C_mic) and other soil physical,chemical and biological indices.Therefore,TOC,CEC and C_mic could be used as the indicators in assessing soil quality in this study area.In addition,there were also positive correlations between soil microbial biomass-C and TOC,soil microbial biomass-N and total N,and soil microbial biomass-P and total P in the present study.

Key words: Cunninghamia lanceolata, Mixed forest, Soil quality assessment, Soil function

CLC Number:

S718.5

HUANG Yu, WANG Silong, FENG Zongwei, GAO Iong, WANG Qingkui, HU Yalin, YAN Shaokui . Soil quality assessment of forest stand in different plantation esosystems[J]. Chinese Journal of Applied Ecology, 2004, (12): 2199-2205.

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