| 摘要: |
| 选取对黄土沟坡地自然生产力有重要影响的土壤理化性质和树种根系分布特性，共2大类9个指标作为自然生产力的评价指标，利用层次分析法(AHP)对陕西省淳化县嘴头村和西坡村的坡地自然生产力(NSP)进行了评价。并在此基础上，选取对沟坡地现实生产力有重要影响的社会经济状况、土壤理化性质和树种特性3大类13个指标，对两地的坡地现实生产力(CSP)进行了评价。结果表明，在影响自然生产力和现实生产力大小的因子中，树种根系分布深度的贡献率最大，说明选择适生树种是沟坡开发成功的前提。社会经济因子，尤其是当地群众对造林树种的接受程度和参与开发的积极性，对现实生产力的大小具有重要影响，是沟坡地自然生产力能否得到充分发挥的关键；造林地生产力的评价必须综合考虑土壤、树种生物学特性和农村社会经济等3方面因素，才能得出客观、准确的结论。 |
| 关键词: 林地自然生产力 林地现实生产力 层次分析法（AHP） |
| DOI： |
| 分类号: |
| 基金项目:国家“九五”攻关项目“高原台塬过渡区(淳化)高产型粮果林发展研究”的部分内容 |
|
| Researches of forestland productivity evaluation andits application on the Loess Plateau |
|
|
| Abstract: |
| By using analytical hierarchy process (AHP),9 indexes of 2 categories including soil physical & chemical features and tree root vertical distribution were selected to appreciate the natural soil productivity (NSP) of slope lands of Zuitou gully and Xipo gully at Chunhua County.Based on this,the current soil productivity (CSP) of the slope lands of the two villages were studied after selecting 3 categories,13 indexes including social economic condition,soil physical & chemical features and tree root characters as the evaluation indexes which have important effect on CSP.The results indicate that among all the factors affecting NSP and CSP,the root distribution has the largest contribution to NSP,which indicates that selecting suitable tree species is the crux and precondition to the success of slope development.Social economic factors,especially the accepting degree to certain tree species and the initiative to participate of local people,are of great importance to CSP,and are the key point to the exertion of NSP.The factors must be considered in the aspects of soil features,bio-features of the planted tree species and social economic factors when evaluating work will be done on the productivity of afforesting site.Only in this way could the conclusion be made objectively and exactly. |
| Key words: natural soil productivity of forest land current soil productivity of forest land analytical hierarchy process (AHP) |
