| Degraded forest ecosystem of karst and non-karst rock groups in Yu-liang riverwatershed, Guizhou province central mountainous area, was regarded as the researchobject. Vegetation succession and soil evolution of degraded forest in different rockgroups was investigated and the dynamics was monitored by using "time replacedspace" and "located research" method, combined with general surveys and pointsurveys, qualitative and quantitative method, comparative ecology and experimentalecology. Direction of the research was focused on main characteristics research ofstructure and function of karst degraded forest as well as the similarity and specialtyof structure and function of karst and non-karst degraded forest. The mainconclusion was concluded as follow:1. In initial successional stage of tree forest from karst and nonkarst rock groups inGuizhou provincial center, tree forest type of karst and nonkarst rock groups hadtendency of nonkarstification and conifer and pioneer. With degraded tree forestnatural restoration, plus successional feature and life-form changing regularity ofdegraded tree forest types from karst and nonkarst rock groups had similar tendency,nonkarstification of species structure in arboreous layer of nonkarst tree forest typesand karstification of species structure in arboreous layer of karst tree forest typeswere moving up. In Guizhou provincial center, climax forest type of karst forest wasevergreen-deciduous broad-leaved mixed forest and accompanied with deciduousbroad-leaved forest, evergreen-deciduous broadleaved forest and evergreenbroad-leaved forest; climax community of nonkarst forest was sub-tropical zonalevergreen broad-leaved forest.2. Companying natural restoration of degraded tree forest from different rock groupsin Guizhou provincial center, main structural index of arboreous layer, arbuscularlayer, herbaceous layer and soil stratum in different tree forest changed continually. There existed remarkable correlation between the CI index and structural indexincluding plant biodiversity feature, morphological structure feature, soil basicfeature, water holding capacity feature, soil fertility potentiality feature, soilfertility effectiveness feature and synthetic structure feature. Restoring maximumvalue of morphological structure feature in successional tree forest types from karstand nonkarst rock groups was≤0.9, Restoring maximum values of plantbiodiversity feature, morphological structure feature, soil basic feature, waterholding capacity feature, soil fertility potentiality feature, soil fertility effectivenessfeature, synthetic structure feature in nonkarst tree forest were≈1.0, aad these inkarst tree forest were＜1.0, and structural index restoration speed in karst treeforest was lower than that in nonkarst tree forest.3. Companying natural restoration of degraded tree forest from different rock groupsin Guizhou provincial center, main functional index of tree forest types changedcontinually. There existed remarkable correlation between the CI index andfunctional index include biomass and productivity, carbon storage and productivity,water holding capacity, nitrogen maintaining index, phosphorus maintaining index,potassium maintaining index, calcium maintaining index, magnesium maintainingindex and synthetic function index. Restoring maximum value of Biomass andproductivity index in successional tree forest types from karst and nonkarst rockgroups was≤0.8, and the value of carbon storage and productivity index was≤0.9,and these variables values in nonkarst tree forest were higher than that in karst treeforest. Restoring maximum value of water holding capacity, nitrogen maintainingindex, phosphorus maintaining index, potassium maintaining index, calciummaintaining index, magnesium maintaining index and synthetic function index innonkarst tree forest were about 1.0, and the values of these variables; in karst treeforest were＜1.0, and functional index restoration speed of karst tree forest werelower than that of nonkarst tree forest.4. Forest structure led to forest function, and the function further affected thestructure development, and the relationship between the structure and function cameto a natural force making degraded forest natural restoration advance in differenttree forest types from karst and non-karst rock groups in Guizhou provincial center.When CI＜300, synthetic structural index in karst forest was higher than that innon-karst forest; When CI＞300, synthetic structural index in karst forest was lowerthan that in non-karst forest. When CI＜200, synthetic functional index in karst forest was higher than that in non-karst forest; When CI＞200, synthetic functionalindex in karst forest was lower than that in non-karst forest, when syntheticstructural index was＜0.5, synthetic functional index in nonkarst tree forest waslower than that in karst tree forest as same synthetic structural index value; andwhen synthetic structural index was＞0.5, synthetic functional index in nonkarsttree forest was higher than that in karst tree forest as same synthetic structural indexvalue.
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