[1]陈强,常恩福,毕波,等.滇东南岩溶地区两种地类的水土流失比较[J].水土保持研究,2007,14(01):281-283,286.
 CHEN Qiang,CHANG En-fu,BI Bo,et al.Comparison Between Two Lands of Water and Soil Conservation in Southeastern Yunnan[J].,2007,14(01):281-283,286.
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滇东南岩溶地区两种地类的水土流失比较()
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《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]

卷:
14卷
期数:
2007年01期
页码:
281-283,286
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Comparison Between Two Lands of Water and Soil Conservation in Southeastern Yunnan
作者:
陈强1 常恩福1 毕波1 李品荣1 尹艾萍1 刘永国2 李玉文2
1. 云南省林业科学院, 昆明 650204;
2. 文山州林科所, 云南文山 666300
Author(s):
CHEN Qiang1 CHANG En-fu1 BI Bo1 LI Pin-rong1 YIN Ai-ping1 LIU Yong-guo2 LI Yu-wen2
1. Yunnan Academy of Forestry, Kunming 650204, China;
2. Forestry Institute of Wenshan, Yunnan 666300, China
关键词:
岩溶坡耕地封山育林水土保持
Keywords:
karst slope plowlandenclosure land of the hillside for regenerationwater and soil conservation
分类号:
S157
摘要:
对西畴岩溶地区坡耕地和封山育林地的水土流失测定结果表明:降雨多少和降雨强度对径流影响较大,一般降雨量多的年份或月份,产生的径流量和泥沙流失量也较多。坡耕地的水土流失情况较为严重,平均每年产生径流170.06t/hm2,土壤侵蚀模数为162t/(km2·a)。封山育林植被恢复后,增加了盖度,减少了土地的裸露,植株对降雨有效截留,有效防止了水土流失,径流量比坡耕地减少了37.30%,土壤侵蚀模数为39t/(km2·a),泥沙的流失量减少75.78%,且呈逐年减少的趋势。封山育林后流失的土壤养分也得到控制,固体养分流失量,分别比坡耕地减少有机质51.79%、全氮70.82%、全磷38.85%、全钾75.36%、速效氮72.10%、速效磷10.75%、速效钾70.21%,液体养分流失量,分别比坡耕地减少氮34.55%、磷23.16%、钾61.31%。封山育林由于有植被的保护,枯枝落叶及微生物对土壤的改良和营养补充,使大多数营养成份有所提高,而坡耕地的土壤营养成份在下降。
Abstract:
The loss of water and soil on slope plowland and enclosure land of the hillside for regeneration in karst areas of Xichou were analyzed, the result shows that the runoff is influenced by the quantity and intensity of rainfall. The quantity of run-off and loss of soil and sand will be produced more when it is more rain. The runoff is 170.06 t/ (hm2·a), the modulus of soil eroded is 162 t/ (km2·a). After enclosing land of the hillside for regeneration, forest canopy is increased and bare land is reduced. Trees can effectively withhold rain and prevent loss of water and soil. Compared with slope plowland, the run-off and lose of soil and sand can be reduced 37.3%, 75.78%, the modulus of soil eroded is 39 t/ (km2·a). It gets less and less year after year. The loss of solid nutrients of soil is reduced as follow: the organic matter 51.79%, total nitrogen 70.82%, total phosphor 38.85%, total potassium 75.36%, quick effective nitrogen 72.10%, quick effective phosphor 10.75% and quick effective potassium 70.21%. The loss of liquid nutrients of soil is dropped down as follow: nitrogen 34.55%, phosphor 23.16%, potassium 61.31%. When the vegetation has been restored, it is not only reduced loss of nutrient, water and soil, but also increased the nutrient of soil because dead stick and leaves were broken down by microbes. The nutrient of slope plowland is declining at the same time.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2006-4-11;改回日期:。
基金项目:云南省“十五”科技攻关项目“滇东南岩溶地区石漠化综合治理试验示范”的研究内容之一
作者简介:陈强(1963- ),男,云南昭通人,研究员,主要从事岩溶地区生态环境治理、林木遗传育种和森林资源培育方面的研究。
更新日期/Last Update: 1900-01-01