±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 286  |  »Ø¸´: 5
¡¾½±Àø¡¿ ±¾Ìû±»ÆÀ¼Û5´Î£¬×÷Õߺ£ÄÚ´æÖª¼ºÔö¼Ó½ð±Ò 4 ¸ö
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£

º£ÄÚ´æÖª¼º

ľ³æ (Ö°Òµ×÷¼Ò)


[×ÊÔ´] Soil erosion response to climatic change and human activity.pdf

Soil erosion response to climatic change and human activity.pdf

soil erosion during the transition from dry-cool to wet-warm climates was more intense than during wet-warm and cool-dry climatic episodes, but serious accelerated soil erosion has occurred during the last 2,500 years because of man-induced devastation of vegetation and other anthropogenic disturbance of the environment. Modern rates of soil erosion on the Loess Plateau are a combination of both intensive natural and human-induced erosions andare some four times greater than occurred in the geological past. The recent implementation of soil and water conservation measures has decreased sediment load in the Yellow River by 25%.
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

cattail


¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶,ÓÅÐãÍÆ¼ö

·Ç³£¸Ðл^_^
2Â¥2007-09-30 02:20:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

bkbysj

ľ³æ (СÓÐÃûÆø)


¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶,ÓÅÐãÍÆ¼ö

²»´íµÄÓ¢ÎÄÊé¼®
5Â¥2008-01-09 14:00:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
¼òµ¥»Ø¸´
2007-10-02 15:55   »Ø¸´  
 Ð»Ð»·ÖÏí
deanxiao4Â¥
2008-01-09 13:31   »Ø¸´  
 
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ º£ÄÚ´æÖª¼º µÄÖ÷Ìâ¸üÐÂ
¡î ÎÞÐǼ¶ ¡ï Ò»ÐǼ¶ ¡ï¡ï¡ï ÈýÐǼ¶ ¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 0703µ÷¼Á +9 ʰ¾ÁÒ¼ 2026-04-04 10/500 2026-04-04 22:53 by ÀíÏëÔÚʵ¼ùÖ®ÖÐ
[¿¼ÑÐ] 323Çóµ÷¼Á +8 Àî¼ÑÀÖ1 2026-04-04 8/400 2026-04-04 22:26 by hemengdong
[¿¼ÑÐ] 086000ÉúÎïÓëÒ½Ò©298µ÷¼ÁÇóÖú +6 ÔªÔªÇàÇà 2026-03-31 8/400 2026-04-04 22:15 by lys0704
[¿¼ÑÐ] 301Çóµ÷¼Á +18 ÂæÍÕÄÐÈË 2026-04-02 18/900 2026-04-04 20:33 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 085601£¬Ò»Ö¾Ô¸Ïôó334¸´ÊÔ±»Ë¢Çóµ÷¼Á +13 ÔøÑöÖ® 2026-04-03 15/750 2026-04-04 20:13 by dongzh2009
[¿¼ÑÐ] 329Çóµ÷¼Á +13 miaodesi 2026-04-02 15/750 2026-04-04 18:14 by jj987
[¿¼ÑÐ] ±¾¿Æ211£¬×¨Òµ085404£¬293·ÖÇëÇóµ÷¼Á +5 Á«²Ë¾ÍÊÇź°É 2026-04-04 5/250 2026-04-04 14:08 by ÕâÊÇÒ»¸öÎÞÁĵÄê
[»ù½ðÉêÇë] ͬÄêÉ걨£¬ÊDz»ÊǾͲ»»áÅɸøÄ㺯ÆÀ±¾×ÓÁË£¿ +4 redcom 2026-03-29 4/200 2026-04-04 10:08 by kudofaye
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +11 ÎâèùÓ±£¡ 2026-04-03 11/550 2026-04-04 09:56 by ССÊ÷2024
[¿¼ÑÐ] 288Çóµ÷¼Á Ò»Ö¾Ô¸¹þ¹¤´ó ²ÄÁÏÓ뻯¹¤ +12 ÂåÉñ¸ç¸ç 2026-04-03 12/600 2026-04-04 09:22 by ÓлúСÃñ¹¤
[¿¼ÑÐ] 288Çóµ÷¼Á Ò»Ö¾Ô¸¹þ¹¤´ó ²ÄÁÏÓ뻯¹¤ +39 ÂåÉñ¸ç¸ç 2026-03-31 41/2050 2026-04-03 21:51 by qlm5820
[¿¼ÑÐ] 285Çóµ÷¼Á +5 AZMK 2026-04-03 8/400 2026-04-03 18:17 by AZMK
[¿¼ÑÐ] 372·Ö²ÄÁÏÓ뻯¹¤£¨085600£©Ò»Ö¾Ô¸ºþÄÏ´óѧÇóµ÷¼Á +3 À¶¼ãƬ 2026-04-03 4/200 2026-04-03 17:58 by Jimmyandyou
[¿¼ÑÐ] 338Çóµ÷¼Á +7 êɹ¦? 2026-04-03 7/350 2026-04-03 16:46 by wxiongid
[¿¼ÑÐ] 285Çóµ÷¼Á +7 AZMK 2026-04-02 9/450 2026-04-03 11:12 by wanwan00
[¿¼ÑÐ] Ò»Ö¾Ô¸´ó¹¤Ñ§Ë¶£¬Çóµ÷¼Á +4 yub0811 2026-04-02 4/200 2026-04-02 21:36 by °ÙÁéͯ888
[¿¼ÑÐ] 22408 266Çóµ÷¼Á +3 masss11222 2026-04-02 3/150 2026-04-02 18:11 by ±ÊÂä½õÖÝ
[¿¼ÑÐ] ¿¼Ñе÷¼Á +12 Amber00 2026-03-31 12/600 2026-04-02 09:04 by sanrepian
[¿¼ÑÐ] 085601²ÄÁϹ¤³ÌÕÒµ÷¼Á +20 oatmealR 2026-03-29 21/1050 2026-04-01 21:00 by lijunpoly
[¿¼ÑÐ] 276Çóµ÷¼Á +3 ÕԾûª 2026-03-29 3/150 2026-03-31 10:06 by cal0306
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û