本文關(guān)鍵詞： 土壤肥力 土壤屬性 造林作業(yè)區(qū)　出處：《應(yīng)用生態(tài)學(xué)報(bào)》2017年05期 　論文類(lèi)型：期刊論文

【摘要】：為了掌握西藏將要造林作業(yè)區(qū)的土壤肥力水平,對(duì)6個(gè)地市524個(gè)造林作業(yè)區(qū)的土壤樣本進(jìn)行了養(yǎng)分測(cè)定,采用改進(jìn)的內(nèi)梅羅綜合指數(shù)法分析土壤肥力水平.結(jié)果表明:西藏造林作業(yè)區(qū)土壤綜合肥力指數(shù)為0.425~1.972,土壤綜合肥力水平一般的作業(yè)區(qū)數(shù)量占64.9%,貧瘠的占34.9%,肥沃的占0.2%.各屬性分肥力指數(shù)均值表現(xiàn)為:堿解氮pH全氮速效鉀有機(jī)質(zhì)有效磷全磷全鉀,指數(shù)值為0.654~2.643,全氮、堿解氮的肥力水平主要為肥沃、很肥沃,速效鉀、有機(jī)質(zhì)、全磷的肥力水平主要為一般,有效磷、全鉀的肥力水平主要為貧瘠,土壤酸堿度適宜.各地市造林作業(yè)區(qū)平均土壤綜合肥力指數(shù)表現(xiàn)為:林芝市昌都市山南市拉薩市日喀則市阿里地區(qū),其中,阿里地區(qū)、日喀則市、拉薩市造林作業(yè)區(qū)土壤綜合肥力水平為貧瘠,昌都市、林芝市為一般,而山南市一般和貧瘠的數(shù)量相當(dāng).西藏造林作業(yè)區(qū)土壤綜合肥力水平總體偏低,土壤綜合肥力、土壤各屬性肥力水平由西北部的阿里地區(qū)至東南部的林芝市逐漸趨好,具有明顯的水平地帶性規(guī)律.
[Abstract]:In order to grasp the Tibet will be the level of soil fertility of afforestation area, soil samples of 6 cities in 524 afforestation area were nutrient determination, analysis of soil fertility by Nemero index improved. The results showed that: the soil of Tibet afforestation area comprehensive fertility index was 0.425~1.972, the number of operation area of the integrated soil fertility level general accounting for 64.9%, accounting for 34.9% of the poor, rich 0.2%. fertility index for each attribute mean performance: n pH N K organic phosphorus total potassium and total phosphorus, the index value is 0.654~2.643, total nitrogen, available nitrogen fertility levels are very rich and fertile, available potassium, organic matter the fertility level of total phosphorus, mainly for general, available phosphorus, total potassium fertility level is mainly poor, soil pH is suitable for afforestation area around the city. The average soil fertility index showed: Linzhi city Chang City Lhasa City, Shigatse City, Ali, which Ali District, Shigatse City, Lhasa city afforestation area soil fertility level is poor, Chang City, Linzhi City, South City and quite general and poor. The number of Tibet integrated soil fertility level of afforestation area is generally low, soil fertility, soil attribute fertility from northwest to Southeast of the Ali area of Linzhi city is getting better, with regular horizontal zonality obviously.

【作者單位】： 中國(guó)林業(yè)科學(xué)研究院資源信息研究所;西藏自治區(qū)林業(yè)調(diào)查規(guī)劃研究院;
【基金】：西藏自治區(qū)2016年度重點(diǎn)區(qū)域生態(tài)公益林建設(shè)工程項(xiàng)目 西藏重點(diǎn)區(qū)域造林工程生態(tài)效益監(jiān)測(cè)和評(píng)估項(xiàng)目資助~~
【分類(lèi)號(hào)】：S714.8
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本文編號(hào)：1508202